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Icon-den-o.pngThis article is about a rider in Kamen Rider Den-O.

For his Bujin counterpart, see Kamen Rider Bujin Den-O.
"I don't have any energy left to faint!"
―After becoming Den-O and before boarding the DenLiner for the first time[src]

Ryotaro Nogami (野上 良太郎, Nogami Ryōtarō) is a 18-year-old young man who journeys across the timeline as Kamen Rider Den-O (仮面ライダー電王デンオウ, Kamen Raidā Den'ō) alongside the Taros onboard the DenLiner.

Imagin Possessions

Due to his special status as Den-O, he can resist the control of an Imagin contracted to him, among other things, as long as he's conscious. As Ryotaro continues on his journey, he meets more Imagin, each taking his body and using it as their own for the duration of their possession. Each of his personality changes affect the color of his eyes and some strands of his hair, changing its color to match the Imagin while gaining their abilities and some of their strength along with it.

  • When possessed by Momotaros, Momo is in Ryo's body. His hair spikes up slightly with a single red streak and he gains more muscular definition and the physical strength to go with it.
  • When possessed by Urataros, Ura is in Ryo's body with the right words to woo women and convince almost anybody. His hair is straight and calm and has a single blue streak going through it. He also wears a pair of black rimmed eyeglasses(although in one episode of Kamen Rider Decade, he is seen wearing a white suit, a blue tie, and a matching top hat with a blue band in addition to his usual appearance.)
  • When possessed by Kintaros, Kin is in Ryo's body. His hair grows such that he has a ponytail with a golden yellow streak through it. However, his increased strength often results in self-injury and clumsiness.
  • When possessed by Ryutaros, Ryu is in Ryo's body, incorporating dancing into everything he does. He grows one long purple and black streak of hair and is always seen wearing a brown cap. His reckless personality infests itself upon Ryotaro, and usually causes him to destroy whatever is around if he gets out of control. One such incident occurred during the events of Climax Deka when R-Ryotaro arrested everyone who he thought looked suspicious and was part of the "Evil Organization" advertised by Negataros.
  • When possessed by Sieg, though they never forged a contract, Sieg is in Ryo's body. His hair is styled in cornrows and has several white highlights with one longer white and black lock on the left side of his face, and a white feather boa appears around his neck.
  • While Yuto was removed from time, Ryotaro gained a contract with Deneb, Deneb is in Ryo's body. His hair grows out past shoulder length with two locks of hair on each side of his head. On the right side, the lock is a neon green with a darker green streak within it.
  • When abducted by Shiro and possessed by the Ghost Imagin in the events of Final Countdown, Ryotaro's personality is overwritten by the evil Imagin's will. His hair turns snow white as it grows out long and spiky with light-yellow cat's eyes.


Early Life


Born on December 26, 1988 as the son of Shinichi and Kayoko Nogami, Ryotaro and his sister Airi became orphans at a young age, their parents dying in an untold accident. Living with their grandmother, Ryotaro and Airi regularly made visits to the closed down Milk Dipper as children, it being among the few mementos of Shinichi and Kayoko. Originally, the two also possessed a picture of their parents as well, but Ryotaro's carelessness led to its disappearance, with Ryotaro feeling regretful ever since.

Main article: Ryotaro Nogami (Kotaro)

Ryotaro's younger self

At the age of ten, a juvenile Ryotaro becomes involved with his future self's battle against Kamen Rider Gaoh, tagging alongside the Den-Liner crew as "Kotaro".  Replacing the amnesic Ryotaro, Momotaros temporarily possesses "Kotaro" instead, transforming into Kamen Rider Mini Den-O.

After the battle, "Kotaro" and his older counterpart are rewarded with the chance to see their late parents in the past, allowing both Ryotaros to remember Shinichi and Kayoko's faces. Once returning to his own time, the younger Ryotaro draws a picture of his parents, with the current Ryotaro retaining it in the present.

Young Adult

Ryotaro and Airi eventually re-opened the Milk Dipper with the aid of his sister's fiancé. However, when Airi's fiancé mysteriously disappeared a month before the wedding, Airi suffered from amnesia, losing all memories of her fiancé. Worried for her, Ryotaro dropped out of high school just before graduation, deciding to financially assist Airi instead.

Becoming Kamen Rider Den-O

When he finds the Rider Pass, Ryotaro unwittingly becomes the protector of time and space known as Kamen Rider Den-O, fighting the Imagin who traveled to the year 2007 to grant wishes and travel further into the past to change the future to their liking. As he is a Singularity Point, he is immune to the effects of changes to the past, and he can also resist the temptations of an Imagin, as seen with the hotheaded Imagin he named Momotaros, whose contract provides Den-O with a fighting form. He is assisted by the Singularity Point Hana as well as the crew of the DenLiner, a train that allows him to traverse time in pursuit of Imagin. They are the mysterious Owner of the DenLiner and the dining car's waitress Naomi. Along the way, he becomes contracted to other Imagin who give him the ability to access three of Den-O's other forms. They are the lying Casanova Urataros, the herculean and narcoleptic Kintaros, and the childish yet strong Ryutaros.

Ryotaro later identifies a mysterious man who has been following him through the past as his sister's fiancé Yuto Sakurai, but then meets a young man who calls himself Yuto Sakurai and his Imagin contract Deneb, the team that can become Kamen Rider Zeronos. Upon meeting Yuto, he begins to learn more about the nature of time and the Imagin, and is told by Yuto that protecting people is not as important as protecting time. Ryotaro does not believe this and feels that the two are one in the same, and he will do so, despite his own weaknesses.

Ryotaro also briefly meets the Swan Imagin Sieg who allows him to access another form, and later the evil Kamen Rider Gaoh who hijacks the DenLiner to travel to the past to obtain the the Gaoh-Liner, leaving Ryotaro without memory of being Den-O for a while, meeting his past self as a result, until Gaoh takes him to the Tokyo of December 26, 1988, the day Ryotaro Nogami was born, in an attempt to erase him. To defeat him, Yuto travels in time to pick up three other incarnations of Ryotaro for Urataros, Kintaros, and Ryutaros to possess and aid Ryotaro in the "Climax Scene", destroying the GaohLiner and defeating Gaoh. In the process, while getting to see his parents firsthand, Ryotaro learns how "people's memories are time".

Upon his return to the present, Ryotaro learns that because he retains only the memories of fighting Gaoh as Sword Form while his past selves are incapacitated, he has no memory of fighting as Rod, Ax, or Gun Forms. This causes Urataros, Kintaros, and Ryutaros to all dissolve into sand, from which Ryotaro's feelings manifest the K-Taros. This restores the three lost Imagin, and gives Ryotaro access to the stronger Den-O Climax Form.

When Ryotaro's actions cause the Junction Point to manifest, his sync with the Tarōs starts to dissolve as a side effect, forcing him to fight as Plat Form. However, solving the crisis in advance, the Tarōs use their powers to create the DenKamen Sword so Ryotaro can assume the powerful Den-O Liner Form so he can fight on his own. Shortly thereafter, he meets the Singularity Point Kai, who seeks to make the Imagin's future the true future, by seeking to destroy the Junction Point, who is later found to be Ryotaro's sister Airi. As a result, Ryotaro falls into a trap set up by Kai to keep him from Airi, with Kintaros and Urataros sacrificing themselves so Ryotaro can return to the present. In the process, Ryotaro learns that his missing memory is tied to the true identity of the one who will ensure that the flow of time and space leads to the future without Imagin: his niece who is revealed to be Hana/Kohana.

After the final battle is over, Ryotaro is saddened by the supposed loss of the Tarōs, only to find out that they and Sieg, still existing due to their memories together, are hiding in a ditch attempting to surprise him. Ryotaro is overjoyed that they are all still alive and celebrates happily. With his mission to protect time from Kai and his Imagin finished, Ryotaro relinquishes his Rider Pass back to the Owner of the DenLiner, thanking everyone for what they have done for him. As he rides his bike back to the Milk Dipper, he is greeted by all of the riders of both the ZeroLiner and the DenLiner who bid him a final farewell before departing into the time stream. Ryotaro smiles as they pass by, knowing that he will meet them again someday in the future.

Later, when an Imagin named Negataros steals the Rider Pass from Owner, Ryotaro joins the newly formed DenLiner Police to stop Negataros and his "Evil Organization", succeeding thanks to the aid of Kamen Rider Kiva. After the case was closed, Ryotaro and the DenLiner crew keep the DenLiner Police going just for kicks.

Ryotaro meets his future grandson Kotaro inside the New DenLiner

However, Ryotaro is forced to resume being Den-O when he is possessed by the Ghost Imagin for Shiro, using the Signality Point in order to travel into the past while having the possessed Ryotaro as his enforcer, Kamen Rider Yuuki Skull Form. But through Momotaros' aid, Ryotaro manages to regain control so he can let his Imagin partner in his body to purge the Ghost Imagin before they finish the Imagin off in Climax Form. But during the climatic final battle against the revived Imagin, Ryotaro, Momotaros, and Kotaro assume their rider forms to defeat Shiro when he becomes Yuuki Hijack Form.

After formally meeting his grandson, Ryotaro promises him he won't divulge any learned knowledge of the future as he takes Kotaro and Teddy home on the DenLiner.

Other Events

Kamen Rider Decade

Here Comes Super Momotaros!

Ryotaro de-aged

With Ryotaro off investigating an error in the timeline, there is no one person with the Tarōs that has the power of Den-O and the Tarōs manage without a permanent body to use. Following the departure of Ryotaro, (prior to Tsukasa and company entering Den-O's World,) the Tarōs suddenly lost the ability to maintain their physical forms due to the actions of an unknown force that is altering their present at some time in the past. The alteration of the present also ended up de-aging Ryotaro a few years, making him a young boy/teenager as a result.

Seeing the Mole Imagin surfacing to be connected to it, Momotaros possesses Tsukasa to fight one. After being evicted from Tsukasa's body by Natsumi's pressure point, Momotaros attempts to re-possess Tsukasa, but ends up in the body of Yusuke instead. After Tsukasa manages to get Momotaros to talk back at the Hikari Photo Studio, M-Yusuke storms off to solve the mystery behind his world's crisis.

As he is trying to figure out why buildings are disappearing, M-Yusuke is confronted by Daiki who wishes to know where the DenLiner is, revealing a DenLiner Final FormRide Card in his possession that would supposedly allow Momotaros to regain his physical form. Momotaros refuses, and then begins a fight with Diend as Den-O Sword Form, escalating against him with Diend using Sasword and Saga to outnumber him before he is sent plummeting off of a building. He survives as Diend takes his leave for Momotaros to reconsider.

Elsewhere, as Tsukasa and Natsumi investigate Den-O's World by finding the DenLiner and use it to go back to the time it started, Urataros, Kintaros, and Ryutaros each possess Tsukasa, revealing that they were warned of Decade and believe he is connected to the disturbances in their world. When Tsukasa manages to force them all out, they take over Natsumi's body, each using her to fight Decade in their respective Den-O Form as Decade counters as Agito. During the fight, both Riders are transported to another dimension similar to where the Rider War took place in Natsumi's dream. The fight would ultimately end in a stalemate as the DenLiner picks them up. Upon entering, they are greeted by Naomi, Kohana, and Owner, who would talk to them about teaming up to solve the mystery.

After tending to his injuries from taking out another Mole Imagin, M-Yusuke is confronted by Tsukasa before he senses the Imagin he's looking for, the Alligator Imagin. Chasing him to the past, Den-O is nearly killed by the Alligator Imagin when Decade and Diend intervene, with Diend using his Riotrooper card to hold the Imagin at bay. Diend would once again offer Momotaros a true body of his own, but Decade somewhat defends Momotaros, regaining his access to Den-O's powers.

Den-O Characters shocked in Decade.jpg

Through the modified Final Form Ride Card, Momotaros regains his physical form and, after a slight misunderstanding from Yusuke, takes out the Alligator Imagin by using Kuuga Gouram as part of his Finishing Attack. Although the crisis is over another occurs after Momotaros returns to the DenLiner, with the Tarōs disappearing and Momotaros ending up on Onigashima as part of the Oni Conquest legend.

Kamen Rider Ghost: Legendary! Riders' Souls!

Heisei Rider Damashii souls.jpg

Kamen Rider Ex-Aid "Tricks": Kamen Rider Genm

Ganbarizing Critical Strike Step 1.png

Despite not appearing in the web-exclusive series, Den-O and 13 Heisei Riders were the projections of the Ganbarizing Critical Strike.

Kamen Rider × Super Sentai: Chou Super Hero Taisen

While Ryotaro doesn't appear in this event, he is mentioned when the Game World Momotaros mistakenly called Emu Hojo‎ "Ryotaro".[Kamen Rider × Super Sentai: Chou Super Hero Taisen]

Kamen Rider Zi-O

Kamen Rider Build: Be The One

Among the first 18 Heisei Riders, Den-O fought against numerous monsters in a melee briefly witnessed by Sento Kiryu before being caught in the crossfire as Kamen Rider Zi-O BuildArmor used his Vortex Time Break to wipe out his enemies. [Kamen Rider Build: Be The One]

Kamen Rider Heisei Generations Forever

Ryotaro's return in Heisei Generations Forever.

During the events of the film, the main villain Tid forcibly turned Ataru into Another Den-O to use as a pawn for his grand scheme. Tid, Another Den-O, and their grunts proved too formidable for FuutarosKamen Rider Zi-O and Kamen Rider Geiz to defeat on their own, all three heroes being swiftly overwhelmed. Just when it seemed all hope was lost though, mysterious flashes of light suddenly transported everyone (barring Tid) within the vicinity. Finding themselves at a station, Sougo and his friends were saved by the real Den-O. Each Taros took turns as Den-O to attack their fake counterpart, with Urataros as Den-O Rod Form being the one to finish Another Den-O.

Both transformations were canceled, and a man possessed by Urataros reaches out to Ataru. It was Ryotaro himself, now in his late twenties. Introducing himself as "Kamen Rider Den-O, time officer of love and justice", Urataros in Ryotaro's body encourages Ataru that one exists so long as they are remembered by others. Ataru nods in agreement, with Sougo stating that he will not forget his predecessor. Glad to hear this, Ryotaro and Urataros wish them luck before they transport back to Tid's location. Once Sougo's group had left the station, Momotaros, Kintaros, and Ryutaros then reappear alongside Owner, discussing their identity as Den-O and overall existence as individuals. Despite their usual banter, in a rare moment of solemnity, Momotaros tells Ryotaro that they would always continue to remember him as their friend. While Ryotaro remained silent, his eyes flashed back to their usual color, with a slight smile being given in response.

2007: DenLiner Crash!

While Ryotaro did not appear in the series, he was mentioned once by Yuto when the latter encountered Momotaros, referring him as "Nogami's Imagin".

2017: Grand Climax!


Ryotaro as Den-O possessed by Momotaros was summoned for GrandZi-O to give Momotaros of the present a way to use the power of Den-O, after he sacrificed it to Sougo.

Stage Shows

Kamen Rider Den-O Stage Show at Yomiuri Land


Video Game Appearances

Kamen Rider Battride War

Den-O (Battride War)

Kamen Rider Den-O appears as one of the Main Riders in the video game Kamen Rider: Battride War, which unites the riders of the Heisei era from Kuuga to Wizard.

Den-O has access to Sword, Rod, Ax, and Gun Forms with Climax Form as his Ultimate Form though if any form takes too much damage it will be rendered unusable for the rest of the stage.  Liner Form is present as a standard form (and is the only form that cannot be disabled), but if the player activates their finisher while using it, instead of Climax Form, Den-O's Ultimate Form will be an enhanced version of Liner Form, with his finisher being Train Slash.

Kamen Rider: Battride War II

Den-O in Super Climax Form

Kamen Rider Den-O reappeared in Kamen Rider: Battride War II, summoned by Cinema along with the remaining Heisei Riders in order to create the "ultimate movie." Den-O's stage is based onKamen Rider Den-O: I'm Born!, with Den-O Sword Form set as default playable form with no form changes (including final forms) and Kamen Rider Gaoh as his main enemy in this mission. The game adds Wing Form, which can be unlocked after I'm Born! mission, and Super Climax Form which served as Den-O's Ultimate Final Form for both his original Climax Form and enhanced Liner Form.

Kamen Rider: Battride War Genesis

Kamen Rider Den-O in Battride War Genesis.

Kamen Rider Den-O reappeared in Kamen Rider: Battride War Genesis


Ryotaro is a very shy and timid man, with a tendency for misfortunes. However, when seeing another person in trouble, Ryotaro never hesitates to help them, doing so to his best ability. Faithful to honesty and perseverance, Ryotaro greatly dislikes acts of injustice and self-sacrifice, seeing it as unacceptable.

Genuinely believing that people can change, Ryotaro is willing to place his trust towards anyone who requests it, gaining the Taros' friendship and loyalty. From the many battles fought with his allies, Ryotaro significantly boldened in nature, though retaining his gentle mannerisms.

When reverted back into a child, Ryotaro's impulsiveness increased substantially, acting more recklessly in dangerous situations.

As a running gag, Rotaro has a very poor sense of style in general, to the chagrin of the Taros and his grandson. This extends to his powers as Den-O as well, to the point of constantly shouting Liner Form's finisher attack as "Train Slash" (Densha Giri) without embarrassment.

Powers and Abilities


  • Singularity Point: As a Singularity Point, Ryotaro is immune to time paradoxes, though still susceptible to the Gaoh-Liner, Zeronos cards[1], and Zi-O's powers.
    • Temporal Protection: Even after a timeline paradox, Ryotaro's mind and physical appearance retains its original state. This makes him invaluable against time manipulators, something most other primary Riders do not possess. This includes immunity to losing his memories and powers upon the creation of Another Den-O.


  • Combatant: Being a poor fighter in general. Ryotaro often relies on Momotaros and other Imagin to fight in his stead. As he trained more though, Ryotaro became a somewhat capable fighter in his own right, using Liner Form without any help.
  • Indomitable Will: Singularity Points possess the ability to withstand the temptation of free wishes that the Imagin offers and can expel them when conscious. However, certain Imagin such as Ryutaros can bypass this immunity entirely, unless Ryotaro musters enough willpower to stop them.


The Den-O Belt works by drawing in free energy from the surrounding area, allowing it to generate the Den-O suit, which consists of a soft but durable material called Aura Skin (オーラスキン, Ōra Sukin) and tough armor called Aura Armor (オーラアーマー, Ōra Āmā). As the name implies, Aura Skin and Armor are attuned to the wearer's individual aura; because of Ryotaro's weak will, he can only generate the basic Plat Form. However, by swiping a Rider Pass across the SetTouch and/or through possession by an Imagin, Kamen Rider Den-O is able to pass through multiple forms that matches the Imagin's will, creating a unique Aura Skin and Armor that matches the Imagin's will, as well as generating a facemask called a Denkamen (電仮面, Denkamen).

Each of the forms (excluding Plat Form, Climax Form, and Liner Form) is based on a specific mythological hero along with motifs relating to the respective legends. However, when Ryotaro (post-series) and the Imagin use the Rider Pass, they bypass the Plat Form to assume their respective Den-O Form.

Plat Form

Plat Form

Plat Form (while possessed by Sieg)

Plat Form (Climax Form Transformation)

Plat Form (Liner Form Transformation)

Rider Statistics

  • Rider Height: 180 cm.[2]
  • Rider Weight: 80 kg.[2]

Ability Parameters:

  • Punching Power: 1 t.[2]
  • Kicking Power: 3 t.[2]
  • Maximum Jump Height: 10 m.[2]
  • Maximum Running Speed: 100 m. per 10 sec.[2]

Plat Form (プラットフォーム, Puratto Fōmu) is Den-O's most basic default form undersuit, and for a long while, Ryotaro's default form. This is because of his meek personality not generating enough willpower to give himself a proper Den-O form, until near the end, where he finally generates enough willpower to make his default form become Liner Form.

Plat Form is a black and white form that is activated when first initiating a transformation using a Rider Pass. If the corresponding color-coded button is selected, then by swiping the Pass once more, a form change will occur.

Ryotaro rarely uses this form, as it does not have sufficient armor and pales in comparison to the abilities of the other forms. Only when he does not want the assistance of the Tarōs or is transitioning into Liner Form, does he use this form. Plat Form is designed and named after a railway platform, as a reference to the fact Den-O Riders use their Platforms as an armor template.

While Ryotaro is possessed by Sieg and is transforming into Wing Form, the Aura Skin becomes gold.

While Ryotaro is transforming into Liner Form, the Aura Skin becomes red.

Appearances: Den-O Episodes 1-24, 26-27, I'm Born!, 28-49, Kamen Rider Den-O & Kiva: Climax Deka, Episode Red: Zero no Star Twinkle, Episode Blue: The Dispatched Imagin is Newtral, Kamen Rider Heisei Generations FOREVER

Once Ryotaro activates any of the four buttons on the Rider pass, the chosen Imagin then takes control and a transformation follows. It should be noted that these are not Ryotaro's "true" forms as these are all essentially the Imagin as Riders, which they can also activate on their own supposing they have their own physical forms and are not in need of a host body.

Sword Form

Sword Form

"Sword Form!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 190 cm.[3]
  • Rider Weight: 87 kg.[3]

Rider Senses:

  • Eyesight: 5 km.[3]
  • Enemy Sensor: 2 km.[3]

Ability Parameters:

  • Punching Power: 5 t.[3]
  • Kicking Power: 7 t.[3]
  • Resistance: 10 t.[3]
  • Maximum Jump Height: 35 m.[3]
  • Maximum Running Speed: 100 m. per 5.2 sec.[3]

When possessing Ryotaro (or anyone else) or by himself, Momotaros can assume Den-O's Sword Form (ソードフォーム, Sōdo Fōmu) through the Terminal Buckle, the first and most used form in the series. When in Sword Form he uses the DenGasher as a standard sword-style weapon. This form is the most balanced among Den-O's forms, probably due to Momotaros' prominence among the other Imagin.

Sword Form's typically used Full Charge finisher is the Extreme Slash (エクストリームスラッシュ, Ekusutorīmu Surasshu), which is merely labeled by Momotaros as "My Finishing Move!" (俺の必殺技!, Ore no Hissatsu Waza!), and famously gives it "Parts" (パート, Pāto), despite said parts, those being Parts 2, 2 Dash, 3, and 5 (four was skipped because of tetraphobic reasons, even if Momo wouldn't admit it to Ryotaro) being identical to each other, in the aspect that the blade of the DenGasher detaches and flies in the path of Den-O's swings, ending with a chop that bifurcates. He also uses a "Special Version" (特別編, Tokubetsu-hen) in I'm Born! to finish off Gaoh which resembles the aforementioned parts, the only difference is that the Full Charge is used twice, with the blade striking Gaoh across the chest when it emerged from the ground.

There is also a Final Version (ファイナルバージョン, Fainaru Bājon) used against the Death Imagin which uses energy from the other Taros, Sieg, and Kamen Rider Zeronos Vega Form.

In the Cho Den-O series, Sword Form also has a triple Roundhouse DenRider Kick (デンライダーキック, Den Raidā Kikku), with Momotaros dubbing this his "Super Finishing Attack".

The DenKamen Mask resembles two halves of a peach, which is based on the story of Momotaro, with Momo being based off of the Oni Momotaro fought, much to Momo's constant chagrin, as Imagin are given their body's form from their host's imagination, with Ryotaro's imagination being notoriously poor.

Sword Form is composed of the following parts:[4]

  • Den Kamen (電仮面, Den Kamen, lit. ‘Electric Mask’) - The red overall peach-like mask. It is a mask dedicated to Sword Form.
  • Persia Scan Eye (ペルシアスキャンアイ, Perushia Sukyan Ai) - The eyes. It can see in a wide angle within a wide range. It can distinguish human faces up to 5km away and objects as close as 0.05mm. It also has a night vision function, allowing Den-O to see targets up to 1km away in the dark thanks to infrared irradiation.
  • Persia Antenna (ペルシアアンテナ, Perushia Antena) - Antennae ‘peach stalks’ on top of the Persia Scan Eye. They catch air vibration waves and convert them into electrical signals, allowing Den-O to hear wide range of sounds rom 40Hz to 400,000Hz ultrasonic waves.
  • O Signal (Oシグナル, O Shigunaru) - The green sensor on the forehead. Allows Den-O to detect Imagins within a range of 2km.
  • Bibreast Plate (ビブレストプレート, Biburesuto Purēto) - The chestplate. It is made out of Aura Armor (オーラアーマー, Ōra Āmā), and can alleviate 10 tons of impact.
  • Den Rail (デンレール, Den Rēru) - A ail-shaped mold that runs vertically on the chest. It has the same shape as the rails on Den-O’s head, and is used as a track for whenever the Den Kamen moves.
  • Aura Skin (オーラスキン, Ōra Sukin) - The bodysuit. It can be considered Den-O’s ‘skin’, and an aura covers it.t has excellent defensive capabilities and reduce currents of 500 volts as well as mage caused by diamond-hard cutting edges.
  • Den Gauntlets (デンガントレット, Den Gantoretto) - The forearm armor that stretches to the back of the hands. They are a type of Aura Armor that allows Den-O to withstand shocks from executing special attacks.
  • Wrist Bangles (リストバングル, Risuto Banguru) - Silver bracelets around the wrists. They enhance the energy dissipation effect of the mind and body, improving the secretion of adrenaline, therefore improving athletic ability and as a result improves punching force.
  • Den Cuisses (デンキュイス, Den Kyuisu) - The thigh armor. They discolor depending on Den-O’s form. In Sword Form, they take on a red coloration.
  • Den Poleyns (デンポレイン, Den Porein) - The knee armor. Increases destructive power of knee kicks.
  • Den Greaves (デングリーブ, Den Gurību) - The shin armor. They are a type of Aura Armor that protects the shins from any attack.
  • Ankle Bangles (アンクルバングル, Ankuru Banguru) - Silver anklets around the ankles. They have the same effect as the Wrist Bangles.
  • Den Sabotons (デンサバトン, Den Sabaton) - The feet. They are a type of Aura Armor that protects the insteps.

Sword Form's ending theme is entitled "Double-Action".

Appearances: Den-O Episodes 1-11, 14, 16, 18-20, 23, 26-27, I'm Born!, 28, 30, 32-33, 36, 38-39, 41, 44-45, 49, Kamen Rider Den-O & Kiva: Climax Deka, Cho Kamen Rider Den-O & Decade Neo Generations: The Onigashima Warship, Episode Red: Zero no Star Twinkle, Episode Blue: The Dispatched Imagin is Newtral, Episode Yellow: Treasure de End Pirates, Kamen Rider Heisei Generations FOREVER, Zi-O Episode 40

Rod Form

Rod Form

"Rod Form!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 187 cm.[5]
  • Rider Weight: 102 kg.[5]

Rider Senses:

  • Eyesight: 5 km.[5]
  • Enemy Sensor: 2 km.[5]

Ability Parameters:

  • Punching Power: 4.5 t.[5]
  • Kicking Power: 9 t.[5]
  • Resistance: 10 t.[5]
  • Maximum Jump Height: 20 m.[5]
  • Maximum Running Speed: 100 m. per 9 sec.[5]
  • Maximum Swimming Speed: 100 kn.[5] (approx. 100 m. per 1.94 sec.)

Special Attacks:

  • DenRider Kick: 20 t.[6]

When possessing Ryotaro (or anyone else), or by himself, Urataros can assume Rod Form (ロッドフォーム, Roddo Fōmu). The DenGasher forms into a rod-style weapon in this form. Rod Form has the ability to fight underwater as well as extra protection. Stats-wise compared to Sword Form, it has increased kicking power, while losing some speed & punching power, and a drop in max jumping height. This is one of the least seen forms, as Urataros rarely fights but comes through when a fight is close to water or when the other Imagin are unable to fight.

Rod Form's Full Charge finisher is also one of the two base forms that have a Rider Kick, the second being Sword Form in the Cho Den-O Series. Urataros first performs the Solid Attack (ソリッドアタック, Soriddo Atakku), where he throws the charged DenGasher like a harpoon, which when it makes contact, it turns into a paralyzing blue hexagonal symbol, shaped like that of Urataros' own belt buckle. Once done, he attacks with the DenRider Kick (デンライダーキック, Den Raidā Kikku) to defeat the stunned opponent. The Aura Armor and DenKamen mask resembles a Sea Turtle, the animal associated with the story of Urashima Taro.

Rod Form's ending theme is entitled "Double-Action Rod form".

Appearances: Den-O Episode 6, 8-9, 15, 18, 22, 24, 27, I'm Born!, 34, 42, 44, 49, Kamen Rider Den-O & Kiva: Climax Deka, Cho Kamen Rider Den-O & Decade Neo Generations: The Onigashima Warship, Episode Red: Zero no Star Twinkle, Kamen Rider Heisei Generations FOREVER

Ax Form

Ax Form

"Ax Form!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 185 cm.[7]
  • Rider Weight: 93 kg.[7]

Rider Senses:

  • Eyesight: 5 km.[7]
  • Enemy Sensor: 2 km.[7]

Ability Parameters:

  • Punching Power: 8 t.[7]
  • Kicking Power: 5 t.[7]
  • Resistance: 10 t.[7]
  • Maximum Jump Height: 30 m.[7]
  • Maximum Running Speed: 100 m. per 7 sec.[7]

Special Attacks:

  • Dynamic Chop: 1/2 of Boisterous Punch[8] (15 t.)

When possessing Ryotaro (or anyone else), or by himself, Kintaros assumes Ax Form (アックスフォーム, Akkusu Fōmu). This form of Den-O utilizes in sumo-based combat, as well with the DenGasher forms an ax for short-ranged attacks. Compared to Sword Form, Ax Form gains increased punching power and defenses but loses speed and kicking power.

This form is Den-O's physically strongest base form due to Kintaros' own brute strength. Kintaros tends to fight as Den-O whenever he senses crying or when hears anything similar to the Japanese word for "cry" (鳴く, Naku).

This form's Full Charge finisher is the Dynamic Chop (ダイナミックチョップ, Dainamikku Choppu), which consists of Kintaros charging the DenGasher, then chucking it skyward, jump up to catch it, then come down with a energized DenGasher backed with the momentum of the fall. Typically, Kintaros says the name of the finisher afterwards, but he has said this phrase prior to making the move once.

The aura armor is golden yellow and the motif is of an axe, with a DenKamen Mask resembling the kanji for gold (), all of which are elements to the story of Kintaro.

Ax Form's ending theme is entitled "Double-Action Ax form".

Appearances: Den-O Episodes 10-12, 15, 18, 23, 24, 27, I'm Born!, 28, 31, 35, 40, 44, 49, Kamen Rider Den-O & Kiva: Climax Deka, Cho Kamen Rider Den-O & Decade Neo Generations: The Onigashima Warship, Episode Yellow: Treasure de End Pirates, Kamen Rider Heisei Generations FOREVER

Gun Form

Gun Form

"Gun Form!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 197 cm.[9]
  • Rider Weight: 98 kg.[9]

Rider Senses:

  • Eyesight: 5 km.[9]
  • Enemy Sensor: 2 km.[9]

Ability Parameters:

  • Punching Power: 6 t.[9]
  • Kicking Power: 10 t.[9]
  • Resistance: 10 t.[9]
  • Maximum Jump Height: 42 m.[9]
  • Maximum Running Speed: 100 m. per 4 sec.[9]

When possessing Ryotaro (or anyone else), or by himself, Ryutaros assumes Gun Form (ガンフォーム, Gan Fōmu). The DenGasher forms a gun for short and long ranged attacks.

Gun Form displays an increase in power, speed, and defense easily making it the most powerful out of Den-O's four basic Imagin forms, though the problem with the form lies mainly with its user's mentality. Ryutaros tends to fight on a whim, as he overpowers the other Taros and Ryotaro himself, and he is the least skilled (presumably because of his age) and tends to cause more collateral damage than the other forms due to his low precision skills and the high power of the DenGasher's ammunition.

Ryutaros incorporates break dancing into his fighting style making his movement somewhat unpredictable, though this often helps with creating collateral damage in the first place, as the wild shots would only hit the surroundings of the opponents early on.

This form's finisher is the Wild Shot (ワイルドショット, Wairudo Shotto), where a ball of energy forms in the DenGasher's muzzle, which is also fed by the energy from the orbs on Gun Form's torso armor.

The Aura Armor and DenKamen resemble a dragon, the animal associated with Tatsu no ko Taro.

Gun Form's ending theme is entitled "Double-Action Gun form".

Appearances: Den-O Episodes 13-17, 21-22, 26-27, I'm Born!, 31-32, 37, 44, 49, Kamen Rider Den-O & Kiva: Climax Deka, Cho Kamen Rider Den-O & Decade Neo Generations: The Onigashima Warship, Episode Blue: The Dispatched Imagin is Newtral, Episode Yellow: Treasure de End Pirates, Kamen Rider Heisei Generations FOREVER

Wing Form

Wing Form

"Wing Form!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 193 cm.[10]
  • Rider Weight: 90 kg.[10]

Rider Senses:

  • Eyesight: 5 km.[10]
  • Enemy Sensor: 2 km.[10]

Ability Parameters:

  • Punching Power: 4 t.[10]
  • Kicking Power: 8 t.[10]
  • Resistance: 10 t.[10]
  • Maximum Jump Height: 50 m.[10]
  • Maximum Running Speed: 100 m. per 3.8 sec.[10]

When possessing Ryotaro (or anyone else) or by himself, Sieg assumes Wing Form (ウイングフォーム, Uingu Fōmu) by placing the Wing Buckle (ウイングバックル, Uingu Bakkuru) over the Terminal Buckle.

Unlike the other forms, Wing Form has the DenGasher become two weapons: a boomerang and a hand axe. Wing Form's suit resembles Sword Form but the Aura Skin becomes gold, different shoulder blades and thicker thigh armor are used, and the visor is blue and resembling swan wings, the bird of the ballet Swan Lake, which Sieg is based after.

This form gives Den-O more mobility than Gun Form could provide via a fractionally faster running speed and a somewhat higher jumping height max, though Wing Form has lower offensive output.

Wing Form's Full Charge finisher is the Royal Smash (ロイヤルスマッシュ, Roiyaru Sumasshu).

Wing Form's ending theme is entitled "Double-Action Wing form".

Appearances: Den-O Episode 24, 27, I'm Born, Cho Kamen Rider Den-O & Decade Neo Generations: The Onigashima Warship

Climax Form

Climax Form

Climax Form (Plat Mode)

Climax Form (Punch Mode)

Climax Form (Kick Mode)

"Momo-Ura-Kin-Ryu! Climax Form!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 190 cm.[11]
  • Rider Weight: 119 kg.[11]

Rider Senses:

  • Eyesight: 7 km.[11]
  • Enemy Sensor: 2 km.[11]

Ability Parameters:

  • Punching Power: 8 t.[11]
  • Kicking Power: 10 t.[11]
  • Resistance: 10 t.[11]
  • Maximum Jump Height: 42 m.[11]
  • Maximum Running Speed: 100 m. per 4 sec.[11]

Special Attacks:

  • Boisterous Punch: 30 t.[11]
  • Boisterous Kick: 30 t.[11]

Climax Form (クライマックスフォーム, Kuraimakkusu Fōmu) is Den-O's super form, gained when all Tarōs but Momotaros faded away and Ryotaro's desire not to lose them created the K-Taros cell that is attached to the Den-O Belt once the code 3-6-9-# is entered. Climax Form is basically a stronger version of Sword Form that incorporates the DenKamen of the other three primary Den-O forms onto various parts of the armor.

Due to the nature of Climax Form, the Tarōs need to work as a unit to fight, and their strengths are incorporated into Climax Form. Rod Form's mask is on the right shoulder with Urataros controlling the right arm, Ax Form's mask on the left shoulder with Kintaros controlling the left arm, and Gun Form's mask on the chest with Ryutaros control the legs.

Climax Form's Full Charge finishers are announced on the Belt as "Charge and Up" (チャージアンドアップ, Chāji Ando Appu), allowing Den-O to perform various finishing techniques:

  • Boisterous Kick (ボイスターズキック, Boisutāzu Kikku): The DenKamen on Climax Form's body enter Kick Mode (キックモード, Kikku Mōdo), moving to the kicking leg in question via the train tracks that cover the suit, with Urataros' DenKamen moving down first, followed by Kintaros and Ryutaros. Seconds before the kick connects, the antennae on Urataros' DenKamen move down.
  • Boisterous Punch (ボイスターズパンチ, Boisutāzu Panchi): The DenKamen on Climax Form's body enter Punch Mode (パンチモード, Panchi Mōdo), moving to the punching arm in question via the train tracks that cover the suit, with Kintaros' DenKamen moving down first, followed by Urataros and Ryutaros, using the ax blade on the DenKamen to full usefulness.
  • Boisterous Shout (ボイスターズシャウト, Boisutāzu Shauto): Ryutaros' DenKamen opens up like a dragon's maw, and shootings several homing missiles from the DenKamen.
  • Boisterous Slash (ボイスターズスラッシュ, Boisutāzu Surasshu): It is executed very similarly to Sword Form's Extreme Slash Part 2, only powered by the energy from Climax Form. Here, Momotaros announces "My/Our Finishing Move, Climax Version!" (俺(たち)の必殺技、クライマックスバージョン!, Ore(-tachi) no Hissatsu Waza, Kuraimakkusu Bājon!).
Appearances: Den-O Episodes 28-30, 32, 40, 44, Climax Deka, Final Countdown, Episode Red: Zero no Star Twinkle, Episode Yellow: Treasure de End Pirates, Zi-O Episode 40

Super Climax Form

Super Climax Form

Rider Statistics

  • Rider Height: 190 cm.[12]
  • Rider Weight: 125 kg.[12]

Rider Senses:

  • Enemy Sensor: 2 km.[6]

Ability Parameters:

Special Attacks:

  • Super Boisterous Kick: 50 t.[6]

Super Climax Form (超・クライマックスフォーム, Chō Kuraimakkusu Fōmu), originally advertised as Kamen Rider Cho Den-O (仮面ライダー超・電王, Kamen Raidā Chō Den'ō), is Den-O's extra final form, exclusive to the Cho-Den-O Series and first appearing in Cho Kamen Rider Den-O & Decade NEO Generations: The Onigashima Battleship.

It is the evolved form of the original Climax Form in being a stronger version of Sword Form that incorporates the DenKamen of the other three primary Den-O forms onto various parts of the armor. However, Super Climax Form also includes Sieg's DenKamen (due to his close proximity to the formation at the time) as wings on the back of Den-O Climax and a Wing Form insignia on the mask. While not any stronger than the original Climax Form, it does gain Wing Form's greatest attributes for its agility stats, those being in running speed and jumping height.

Super Climax Form's finisher is an enhanced version of Climax Form's Boisterous Kick, where Den-O jumps into the air, then uses Wing Form's DenKamen to form giant wings to gain additional altitude, then flies towards target before striking the target with a flying kick.

Appearances: Neo Generations: The Onigashima Battleship, Movie War 2010

Liner Form

Liner Form

"Liner Form!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 195 cm.[13]
  • Rider Weight: 94 kg.[13]

Rider Senses:

  • Eyesight: 6 km.[13]
  • Enemy Sensor: 2 km.[13]

Ability Parameters:

  • Punching Power: 6 t.[13]
  • Kicking Power: 7 t.[13]
  • Resistance: 10 t.[13]
  • Maximum Jump Height: 45 m.[13]
  • Maximum Running Speed: 100 m. per 3.5 sec.[13]

Liner Form (ライナーフォーム, Rainā Fōmu) is Den-O's final form, gained when the Tarōs created the DenKamen Sword for Ryotaro to use when their synchronization with him was starting to fail whenever in the past.

In order to initially transform into Liner Form, the Rider Pass must be put in a slot in the back of the blade of the DenKamen Sword, while also putting the K-Taros onto the Terminal Buckle.

This form, solely controlled by Ryotaro with the Imagin using the DenKamen Sword as a means of communication, is themed around DenLiner in transformation and attack. Ryotaro also utilizes each Imagin's respective fighting style when their mask is selected on the DenKamen Sword (eg. Kintaros' strength and defense in KinAx mode, and Ryutaros' breakdancing techniques in RyuGun mode). It soon becomes the only form Ryotaro is able to use while fighting in the past after all of his other forms become inaccessible.

Although considerably versatile, Liner Form does not hold any significant strengths over Den-O's other forms besides being the fastest, which sometimes leaves Ryotaro at a disadvantage. This form was also inaccessible at first without the Taros to assist him.

Later on, Ryotaro was able to use this form by himself though, as demonstrated in the final episode, which was taken as a sign of his now stronger will. Liner Form is also able to use the DenGasher, though this is only shown when the DenKamen Sword was left behind following the Taros all joining the same battlefield as Den-O.

Liner Form's ending theme is entitled "Real-Action".

Appearances: Den-O Episode 36, 38-39, 42-43, 45-47, 49, Saraba Kamen Rider Den-O: Final Countdown.

Plat Form

Plat Form

Plat Form (プラットフォーム, Puratto Fōmu) is Yuuki's most basic default form undersuit, which is briefly seen during Yuuki's transformation sequence before the Aura Armor and the Denkamen face mask attaches.

Skull Form

Skull Form

"Skull Form!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 199 cm.[6]
  • Rider Weight: 107 kg.[6]

Ability Parameters:

  • Punching Power: 7.5 t.[6]
  • Kicking Power: 9 t.[6]
  • Resistance: 10 t.[6]
  • Maximum Jump Height: 40 m.[6]
  • Maximum Running Speed: 100 m. per 5 sec.[6]

Skull Form (スカルフォーム, Sukaru Fōmu) is the form of Kamen Rider Yuuki that is accessed when Ryotaro Nogami was unwillingly possessed by the Ghost Imagin. In this form, Yuuki is armed with the Ghost Imagin's sword.

In Skull Form, Yuuki's Full Charge is the Terminate Flash (ターミネイトフラッシュ, Tāmineito Furasshu).

As the name and design implies, Skull Form's motif is the skeleton.

This form is exclusive to Saraba Kamen Rider Den-O: Final Countdown.



  • Den-O Belt: Transformation belt
  • Rider Pass: A device to scan on the belt
  • K-Taros: Transformation device to become Climax, Liner, or Super Climax Form



Legend Rider Devices

Ever since Kamen Rider Decade, Kamen Riders' arsenals have featured an assortment of Legend Rider-based collectible devices, including many for Den-O.

The Rider Cards used by Decade to access the power of past Kamen Riders include an array of Agito-based cards for different forms and functions. KamenRide=

  • KamenRide: Den-O (カメンライドデンオウ, Kamenraido Den'ō): Transforms Decade into Den-O's Sword Form. Regained when Tsukasa refers to Momotaros by his real name after calling him kind-hearted and restoring his sense of self. [Here Comes Super Momotaros!]
  • KamenRide: Den-O Liner Form (デンオウライナーフォーム, Kamenraido Den'ō Rainā Fōmu): Summons Kamen Rider Den-O in Liner Form, armed with the DenKamen Sword. Using the Final AttackRide: Den-O card allows Decade to execute a Train Slash-style attack alongside Den-O Liner Form.
    • KamenRide: Den-O Chou Climax Form (デンオウスーパークライマックスフォーム, Kamenraido Chō Kuraimakkusu Fōmu, announced as "Super Climax" by the K-Touch): Exclusively appears in Kamen Rider × Kamen Rider W & Decade: Movie War 2010, where Den-O's options are changed to it, including the card on Decade Strongest Complete Form's chest armor.

  • FormRide: Den-O Plat Form (フォームライドデンオウプラットフォーム, Fōmuraido Den'ō Puratto Fōmu): Transforms Decade into Den-O's Plat Form.
  • FormRide: Den-O Ax Form (フォームライドデンオウアックスフォーム, Fōmuraido Den'ō Akkusu Fōmu): Transforms Decade into Den-O's Ax Form.
  • FormRide: Den-O Rod Form (フォームライドデンオウロッドフォーム, Fōmuraido Den'ō Roddo Fōmu): Transforms Decade into Den-O's Rod Form. This card does not appear in the television series, but is featured in Hobby Japan's Detail of Heroes book on Decade.
  • FormRide: Den-O Gun Form (フォームライドデンオウガンフォーム, Fōmuraido Den'ō Gan Fōmu): Transforms Decade into Den-O's Gun Form. This card does not appear in the television series, but is featured in Hobby Japan's Detail of Heroes book on Decade.
  • FormRide: Den-O Wing Form (フォームライドデンオウウイングフォーム, Fōmuraido Den'ō Uingu Fōmu): Transforms Decade into Den-O's Wing Form. This card does not appear in the television series, but is featured in Hobby Japan's Detail of Heroes book on Decade.
  • FormRide: Den-O Climax Form (フォームライドデンオウクライマックスフォーム, Fōmuraido Den'ō Kuraimakkusu Fōmu): Transforms Decade into Den-O's Climax Form.

These cards allow Decade to perform any of their own attacks, Decade is also able to use any signature attacks of whatever Kamen Rider he has transformed into.

  • AttackRide: Den-O Ore Sanjou! (アタックライドデンオウオレサンジョウ!, Attakuraido Den'ō Ore Sanjō!): As Den-O, Decade performs Sword Form's signature phrase and pose.
  • AttackRide: Den-O Nakerude! (アタックライドデンオウナケルデ, Attakuraido Den'ō Nakeru de): Briefly shown following Decade's use of the "Ore Sanjou!" and "Kotaewa Kiite Nai" cards. It was not used, but would presumably cause Decade as Den-O to transform into Ax Form and perform its signature phrase and pose.
  • AttackRide: Den-O Tsuppari (アタックライドデンオウツッパリ, Attakuraido Den'ō Tsuppari): As Den-O Ax Form, Decade launches a series of palm strikes.
  • AttackRide: Den-O Utchari (アタックライドデンオウウッチャリ, Attakuraido Den'ō Utchari): As Den-O Ax Form, Decade performs a Sumo lifting attack. This card does not appear in the television series, but is featured in Hobby Japan's Detail of Heroes book on Decade.
  • AttackRide: Den-O Bokuni Tsurarete Miru? (アタックライドデンオウボクニツラレテミル?, Attakuraido Den'ō Boku ni tsuraretemiru?): Briefly shown following Decade's use of the "Ore Sanjou!" and "Kotaewa Kiite Nai" cards. It was not used, but would presumably cause Decade as Den-O to transform into Rod Form and perform its signature phrase and pose.
  • AttackRide: Den-O Kotaewa Kiite Nai (アタックライドデンオウコタエハキイテナイ, Attakuraido Den'ō Kotae wa kiitenai): As Den-O, Decade transforms into Gun Form and performs its signature phrase and pose.

  • Final FormRide: DenLiner (ファイナルフォームライドデンライナー, Fainaru Fōmuraido Denrainā): Presumably transforms Den-O into the DenLiner.
  • Final FormRide: Momotaros (ファイナルフォームライドモモタロス, Fainaru Fōmuraido Momotarosu): Transforms Den-O into Momotaros. This was originally the FinalFormRide: Denliner card.

  • Final AttackRide: Den-O (ファイナルアタックライドデンオウ, Fainaru Attakuraido Den'ō): Momotaros executes the Decade Liner similar to Den-O's Extreme Slash, labeled by Momotaros as "My Finisher Attack, Decade Version" (俺の必殺技・ディケイドバージョン, Ore no Hissatsu Waza: Dikeido Bājon).

Den-O Gaia Memory.

Den-O Sword Form Medal

Den-O Wing Form Medal

Den-O Switch

  • Den-O Switch (電王スイッチ, Den'ō Suitchi, Circle): The Den-O Switch arms Kamen Rider Fourze with the DenLiner-like Den-O Module (電王モジュール, Den'ō Mojūru) on his right arm, which allows Kamen Rider Fourze to execute a powerful punch.

Den-O Climax Form Ring

  • Den-O Lockseed (電王ロックシード, Den'ō Rokkushīdo): Allows the user to transform into Den-O Arms, equipped with the DenGasher Sword Mode. The core image depicts the Den-O Belt while the lid backside image depicts the Rider Pass. Gaim/Kurokage/Bujin Gaim/Kamuro-styled Lockseed.
    • Transformation: Den-O Arms: Iza Climax! (電王アームズ・いざ、クライマックス!, Den'ō Āmuzu - Iza, Kuraimakkusu!, lit. "Now, the Climax!")
      • Squash: Full Charge (フルチャージ!, Furu Chāji)
      • Au Lait: Ikuze, ikuze, ikuze (行くぜ、 行くぜ、 行くぜ! lit. "Let's go, let's go, let's go")
      • Sparking: Ore no Hissatsu Waza (俺の必殺技! lit. "My Finishing Move")

  • Den-O Climax Form Lockseed (電王クライマックスフォームロックシード, Den'ō Kuraimakkusu Fōmu Rokkushīdo): Allows the user to transform into the Climax Form version of Den-O Arms. The core image depicts the Den-O Belt with the K-Taros phone attached while the lid backside image depicts the K-Taros. Gaim/Kurokage/Bujin Gaim/Kamuro-styled Lockseed. When activated, this Lockseed announces "Climax" (クライマックス, Kuraimakkusu).
    • Transformation: Den-O Arms: Denkamori Climax! (電王アームズ・電化盛りクライマックス!, Den'ō Āmuzu - Denka-mori Kuraimakkusu!)

Den-O Signal Bike

  • Signal Legend Den-O (シグナルレジェンド電王, Shigunaru Rejendo Den'ō, Based on Kamen Rider Den-O's Machine DenBird): Allows Mach to activate a Kourin Signal Legend. When used in the DX Drive Driver, it gives the sound for a Tire Exchange into Drive: Den-O (ドライブ・電王, Doraibu - Den'ō).

"Kaigan! Den-O! (DenKamen Mask formation sounds) Densha de Sanjō! Irekawaru Kanjō! (Sword Form standby jingles)"
―Transformation announcement with Ghost Driver[src]

"Tengan! Ghost! Mega Ulord!"
―Transformation announcement with Mega Ulorder[src]

Den-O Ghost Eyecon (電王ゴースト眼魂, Den'ō Gōsuto Aikon) is one of the 16 title Kamen Riders' Ghost Eyecons. It shows the number R08 on its Startup Time setting, Den-O Sword Form's face on its Transformation Time setting, and Den-O's symbol on its Move Invocation Time setting.

"Jiku Tokkyuu Den-O!(Climax Form standby noise)"
―Activation announcement[src]

"Gashat! Let's Ride! Metcha Ride! Mutcha Ride! What's your ride?! I'm a Legend Rider!"
Level 1 transformation announcement[src]

"Gachan! Level Up! Den-Den-Den-O! Densha de Sanjou! Jiku Tokkyuu! Ikuze Climax Jump!(DenKamen mask formation noise)(Bakusou Bike-styled song)"
Level 2 announcement[src]

"A Gacha! Shuppatsu Shinkou! Momo Ura Kin Ryuu! Deneb ni Sieg ni Tsuideni Teddy!(DenLiner arrival noise follwed by DenKamen mask post-formation noise)(DoReMiFa Beat-styled song)"
Level 3 announcement[src]

"Kimewaza! Jiku Tokkyuu Critical Strike!"
―Gamer Driver finisher announcement[src]

"Kimewaza! Jiku Tokkyuu Critical Finish!"
―Weapon finisher announcement[src]

"Kimewaza! (Word from other Gashat's name) Den-O Critical Finish!"
Gashacon Key Slasher finisher announcement[src]

  • Den-O Fullbottle (電王フルボトル, Den-Ō Furubotoru): Would presumably be used to access a form themed after Kamen Rider Den-O. This Bottle currently only exists as a sound in the DX Build Driver.

  • Momotaros Fullbottle (モモタロスフルボトル, Momotarosu Furubotoru): Used with the Densya Fullbottle to access Den-O Form.
  • Densya Fullbottle (電車フルボトル, Densha Furubotoru, lit. Train Fullbottle): Used with the Momotaros Fullbottle to access Den-O Form. Typically paired with the Kaizoku Fullbottle.

"(Digital beeping) Den-O!"
―Activation announcement[src]

"The Rider who travels by a time train and fights with Imagin is... (Clock ticking noise) Den-O! (時の列車に乗ってイマジンと戦うライダーは…電王だ!, Toki no ressha ni notte Imajin to tatakau Raidā wa... (Clock ticking noise) Den'ō da!)"
―Secondary activation announcement[src]

"Rider Time! (Sword Form standby music) Sword Form! Den-O!"
―Transformation announcement in the Ziku-Driver's right-hand slot[src]

"(Right-hand Ridewatch's announcement)! Armor Time! (Sword Form standby music) Sword Form! Den-O!"
―Rider Armor transformation announcement[src]

"Finish Time! Den-O! Ore no Time (Break/Burst)!"
―Rider Armor finisher announcement[src]

Den-O Ridewatch (電王ライドウォッチ, Den'ō Raidowotchi): Based on Kamen Rider Den-O Sword Form, this Ridewatch provides access to the Den-OArmor used by Zi-O. It is dated 2007.

"(Digital beeping) Climax Form!"
―Activation announcement[src]

"The power of Imagin have gathered! Den-O Climax Form! (イマジンたちの力を集結!電王クライマックスフォーム!, Imajin-tachi no chikara wo shūketsu! Den'ō Kuraimakkusu Fōmu!)"
―Secondary activation announcement[src]

"(Right-hand Ridewatch's announcement)! Armor Time! (K-Taros standby tone) Climax Form! Climax!"
―Transformation announcement in the Ziku-Driver's left-hand slot[src]

"Finish Time! Den-O! Ore-tachi no Time (Break/Burst/Jack)!"
―Finisher announcement in left-hand slot[src]

Den-O Climax Form Ridewatch (電王クライマックスフォームライドウォッチ, Den'ō Kuraimakkusu Fōmu Raidowotchi): Based on Kamen Rider Den-O Climax Form, this Ridewatch would provide access to the Den-OClimaxFormArmor. It is dated 2007.[14]

"(Digital beeping) Liner Form!"
―Activation announcement[src]

"Now one with all Imagin! Let's go let's go let's go! Den-O Liner Form! (全てのイマジンと今一つに!いくぜいくぜいくぜ!電王ライナーフォーム!, Subete no Imajin to ima hitotsu ni! Iku ze iku ze iku ze! Den'ō Rainā Fōmu!)"
―Secondary activation announcement[src]

"(Right-hand Ridewatch's announcement)! Armor Time! Atsumare Imagin! Den-O Liner! Liner Form!"
―Transformation announcement in the Ziku-Driver's left-hand slot[src]

"Finish Time! Den-O! Densha Time (Break/Burst/Jack)!"
―Finisher announcement in left-hand slot[src]

Den-O Liner Form Ridewatch (電王ライナーフォームライドウォッチ, Den'ō Rainā Fōmu Raidowotchi): Based on Kamen Rider Den-O Liner Form, this Ridewatch would provide access to the Den-OLinerFormArmor. It is dated 2007[15], but shown on the Ziku-Driver's screen as FIN.

Den-O Anotherwatch

Another Den-O Watch (アナザー電王ウォッチ, Anazā Den'ō Wotchi): A twisted version of the Den-O Ridewatch used to transform into Another Den-O.

"Progrise! My special move part 2! OreVisiting Den-O! Riding on a train that transcends space and time."
―Transformation announcement with the Hiden Zero-One Driver[src]

Ore Visiting Den-O Progrisekey (オレヴィジッティング電王プログライズキー, Orevu~ijittingu Den'Ō Puroguraizu Kī): Based on Kamen Rider Den-O, this Progrisekey's ability is "Climax".[16]

The Den-O Douwa Zenshuu Wonder Ride Book (電王童話全集ワンダーライドブック, Den-Ō Dōwa Zenshū Wandā Raido Bukku, lit. "Den-O Fairy Tale Complete Works Wonder Ride Book") is based on Kamen Rider Den-O and his forms. The book's name is shortened to "Den-O" in the Swordriver's announcements, and announced as "Imagin" in the Ankokuken Kurayami.

"Mammoth! (マンモス!, Manmosu!)"
―Activation announcement[src]

"Come on! Ma-Ma-Mammoth! (カモン!マ!マ!マンモス!, Kamon! Ma-Ma-Manmosu!)"
―Looping standby announcement with the Revice Driver[src]

"Buddy Up! Kyodai na kiba motsu! Riku no boss! Mammoth! Hanakkara climax da ze!
(バディアップ!巨大なキバ持つ!陸のボス!マンモス!はなっからクライマックスだぜ!, Badi Appu! Kyodaina kiba motsu! Riku no bosu! Manmosu! Hanakkara kuraimakkusuda ze!)

Translation: Buddy Up! With giant tusks! The land boss! Mammoth! It's a climax from the start!"
―Transformation announcement[src]

"Mammoth Stamping Finish! (マンモススタンピングフィニッシュ!, Manmosu Sutanpingu Finisshu!)"
―Revice Driver finisher announcement[src]

"Remix! Buddy Up! Hissatsu! Dosudosu! Taosu! Mammoth!
(リミックス!バディアップ!必殺!ドスドス!倒す!マンモス!, Rimikkusu! Badi Appu! Hissatsu! Dosudosu! Taosu! Manmosu!)

Translation: Remix! Buddy Up! Certain kill! Bam, bam! Knock it down! Mammoth!"
―Remix transformation announcement[src]

"Hissatsu Shonin! Mammoth Stamping Strike! (必殺承認!マンモススタンピングストライク!, Hissatsu Shōnin! Manmosu Sutanpingu Sutoraiku!, Deadly Approval! Mammoth Stamping Strike!)"
―Finisher announcement with the Ohinbuster50 in Gun Mode[src]

"Hissatsu Shonin! Mammoth Stamping Slash! (必殺承認!マンモススタンピングスラッシュ!, Hissatsu Shōnin! Manmosu Sutanpingu Surasshu!, Deadly Approval! Mammoth Stamping Slash!)"
―Finisher announcement with the Ohinbuster50 in Axe Mode[src]

Mammoth Vistamp (マンモスバイスタンプ, Manmosu Baisutanpu): Allows Revi and Vice to access their Mammoth Genome. It contains the genetic information of a mammoth and is based on Kamen Rider Den-O.



  • Airi Nogami: Being his older sister, Airi is very close to Ryotaro, acting as a parental substitute. Ryotaro likewise cares deeply for Airi's well-being, wishing for her to one day regain her memory of Yuto Sakurai.
  • Hana/Kohana: Ryotaro's future niece. Having no knowledge of their relation to one another, Hana and Ryotaro regarded each other as good friends, with Hana constantly looking out for Ryotaro's well-being.
  • Yuto Sakurai (Past Man): As Ryotaro's future brother-in-law, Yuto taught him the importance of perseverance, encouraging Ryotaro to not despair from his misfortunes. When Yuto mysteriously disappeared, Ryotaro was significantly saddened, wishing for Yuto to return home one day.
  • Kotaro Nogami: Ryotaro's future grandson. Annoyed that Ryotaro gave him the name "Kotaro", Kotaro initially held little respect towards his grandfather, perceiving Ryotaro as a weak person. Ultimately though, Kotaro gains a newfound sense of respect for Ryotaro, accepting his given name without issue. In the future, an elderly Ryotaro is to have retained a cordial relationship with his grandson, arriving to pick up Kotaro and Teddy after their battle against Shiro.


  • DenLiner Crew
    • Taros
      • Momotaros: His first Imagin contract. Initially disliked Momotaros because of his immature justice. But after Momotaros is able to understand how important Ryotaro is for him, he becomes Ryotaro's most dependable Taros.
      • Urataros: His second Imagin contract and the first to become one without Ryotaro's permission. Despite Urataros' womanizing and lying attitude, Ryotaro knows that Urataros is actually not a very bad person and becoming the first person that Urataros never betrayed.
      • Kintaros: His third Imagin contract. Initially met as enemy until Ryotaro realized that Kintaros is not a bad Imagin as he only wanted to help people to become stronger. Ryotaro saved his life before dying and Kintaros also becomes the most wise looked Imagin for Ryotaro. Kintaros even went far to make Ryotaro accidentally pact a contract with the Taros to fight with him forever in their climax moment to face on Kai.
      • Ryutaros: His true second Imagin contract but becomes the fourth because of his late action. Ryutaros is considered as a little brother for Ryotaro because of how childish Ryutaros is. He is not even scared of Ryutaros despite his true purpose is to kill him which he later discards.
    • Hana: Hana becomes Ryotaro's most depended partner to solve the case of Imagin. She is also a mentor like for Ryotaro.
    • Naomi: Naomi is considered as a friend for Ryotaro.
    • Owner: The owner of DenLiner is a mentor for Ryotaro, he even guides Ryutaros as he knows how dependable he is to help people.
  • Other Imagins
    • Deneb: The first Imagin who is not his contract to become a friend. He and Deneb even goes far to work together once to discard Yuuto from becoming Zeronos as it will cause him to disappear.
    • Sieg: The second Imagin who is not his contract but sometimes aids him in battle. Ryotaro is one of some people who never avoid him despite how much of a nuisance Sieg is.
  • Seigi Ozaki: Seigi has no true close relationship and is always laughing at Ryotaro's bad luck gift. There are times that he will help Ryotaro to gather some information for catching Imagin without his own realization of the purpose so Seigi can become closer to Airi.
  • Isse Miura: Isse has no true close relationship at first, until he discovered that Ryotaro is possessed by Taros who he thought of as evil spirits at times.

Behind the Scenes


Ryotaro Nogami is portrayed by Takeru Satoh, who made his final consecutive portrayal of the character in Saraba Kamen Rider Den-O: Final Countdown. As Satoh began to rise in popularity within the Japanese entertainment media, Toei was no longer able to afford hiring him for reprisals, resulting in the character being re-written in a way to accommodate for Satoh's absence from the role. Going forward, the character was de-aged and portrayed by Takuya Mizoguchi, until Takeru's surprise return to the role in Kamen Rider Heisei Generations FOREVER.

In the video games Kamen Rider: Climax Heroes and Battride War, he was voiced by veteran voice actor Yuta Kasuya.

Rider No.

As the leading Rider protagonist of Kamen Rider Den-O, Ryotaro Nogami (Kamen Rider Den-O) is labeled Kamen Rider #23 (仮面ライダー23号, Kamen Raidā Nijūsangō) and Heisei Rider #8 (平成ライダー8号, Heisei Raidā Hachigō). [Quiz! Decade Countdown!!]


  • Partly due to Takeru Satoh (Ryotaro's original actor) having been restricted from appearing in future Kamen Rider movies by his agency, Ryotaro's position as the identity of Den-O was replaced with the Taros (particularly Momotaros) in future Kamen Rider Movies succeeding the Cho Den-O Trilogy.
    • With this, many fans speculate that Ryotaro has retired as a Kamen Rider all together, opting to live a normal life. 
    • In select cases, Ryotaro has been portrayed by Takuya Mizoguchi, who starred alongside Satoh as a younger Ryotaro from the past in Kamen Rider Den-O: I'm Born!. The change in Ryotaro's appearance is written as an alteration to the timelines causing Ryotaro to regress in age, similar to the case with Hana after Tamaki Matsumoto succeeded the much older Yuriko Shiratori due to the latter's health issues.
    • As of Heisei Generations FOREVER though, Takeru Satoh as Ryotaro officially reappeared as Kamen Rider Den-O, helping his successors fight Tid. This shows that Ryotaro has not quit being Den-O all together, and will fight alongside the Taros when needed. 
    • Ironically, many previous Kamen Rider movies involved villains manipulating time travel, but with Ryotaro not being present, Den-O was not only unable to stop them, but even became a Shocker Rider at one point due to a time paradox. 
  • Ryotaro is the first Kamen Rider in Kamen Rider Zi-O to have defeated his Another counterpart on his own, rather than relying on a Rider Armor.
  • After de-aging into a child, Ryotaro is never shown using Liner Form as Den-O, solely using Plat Form when the Taros are unavailable.
  • Due to retaining his mind and spirit from when he was an adult, the de-aged Ryotaro is able to transform into Den-O's normal physique.[17]



Main article: Ryotaro Nogami/Appearances


Icon-den-o.png Kamen Rider Den-O
Kamen Riders
Ryotaro Nogami - Yuto Sakurai - Past Man - Kotaro - Kotaro Nogami - Gaoh - Negataros - Ghost Imagin - Shiro - Kuchihiko - Mimihiko - Reiji Kurosaki - Eve - Anna
Transformation Devices
Den-O Belt - Rider Pass - K-Taros - Zeronos Belt - Zeronos Cards - New Den-O Belt - Gaoh Belt - Yuuki Belt - Golden Khakkhara - Pure Silver Metal Stick - G Den-O Belt
DenGasher - DenKamen Sword - ZeroGasher - Denebick Buster - DenGasher (New Den-O) - GaohGasher - Nega DenGasher - Momotarosword - Uratarod - Kintaros Ax - Ryuvolver - Ghost Imagin's sword - Shiro's Whip - Shiro's tops - SavageGasher - Golden Khakkhara - Pure Silver Metal Stick - DenGasher (G Den-O)
Rider Machines
Machine Den-Bird - Machine ZeroHorn - Machine GaohStriker - Machine Nega DenBird - Machine New Den-Bird
Time Transports
DenLiner - ZeroLiner - KingLiner - New DenLiner - GaohLiner - Nega DenLiner - Ghost Train - Battleship of Oni
The Ally Imagin and the Support Characters
The Taros: Momotaros - Urataros - Kintaros - Ryutaros
Other: Sieg - Deneb - Teddy
DenLiner: Owner - Naomi - Hana - Stationmaster
Milk Dipper: Airi Nogami - Seigi Ozaki - Isse Miura
The Imagin
Contract holders
Kai - Death Imagin
Bat Imagin - Chameleon Imagin - Crust Imagin - Crow Imagin - Rhino Imagin - Ivy Imagin - Owl Imagin - Whale Imagin - Wolf Imagin - Jelly Imagin - Tortoise Imagin - Scorpion Imagin - Spider Imagin - Bloodsucker Imagin - Molech Imagin - Cobra Imagin - Salamander Imagin - Gecko Imagin - Newt Imagin - Wasp Imagin - Bluebird Imagin - Rabbit Imagin - Anthopper Imagin - Kraken Imagin - Mole Imagin - Leo Imagin - Pandarabbit Imagin - Snail Imagin - Oct Imagin - Armadillo Imagin - Albinoleo Imagin - Snowman Imagin - New Mole Imagin - Pink Rabbit Imagin - Clown Imagin - Ghost Imagin - Phantom Imagin - Shadow Imagin - Piggies Imagin - Mantis Imagin
Other: Gelnewt
Icon-zi-o.png Kamen Rider Zi-O
Kamen Riders
Sougo Tokiwa (Over Quartzer) - Geiz Myokoin (Over Quartzer) - Woz (Black, (Over Quartzer), White, Red) - Tsukuyomi (Over Quartzer)
Other Sougo Tokiwa variations
Ohma Zi-O - Mirror World - Leader of Quartzer - B - C - D - E - F - Robot Sougo - True Sougo
Future Kamen Riders
2022 (Rentaro Kagura - Isamichi Konjo) - 2040 (Mondo Douan) - 2121 (Rento Makina) - Kamen Rider Ginga
Rider Time Ryuki Riders
Ishihashi - Tozuka - Kimura - Ishida - Abyss - Odin
Another World Riders
G4 - Fuma - Dark Ghost - Rey - Katsumi Daido - White Woz - Yuuki
Other Riders
G3 Team - Shun Kageyama (Worm)
Movie-exclusive Riders
SOUGO Tokiwa - Kagen - Jogen - Soreo Hiden
Stageshow-exclusive Riders
Hiryu Kakogawa - Red Woz
Transformation Devices
Ziku-Driver - Ohma Zi-O Driver - Beyondriver - Miraidriver (Shinobi, Hattari, Quiz, Kikai, Ginga) - NeoDecadriver - NeoDiendriver - K-Touch21
Ridewatches - Miridewatches- Ridewatch Holder - Ridewatch Daizer - Faizphone X - Taka Watchroid - Kodama Suika Arms
Zikan Girade - Zikan Zax - Ride HeiSaber - Zikan Despear - Saikyo Girade - Zikan Jaclaw - Barlckxs' Sword
Ride Striker - Time Mazine - Dai Mazine - Karakuri Robos (Kurogane Oogama - Unnamed Wasp-based Karakuri Robo)
Rider Armors - Ohma Advent Calendar - Future Note - Time Finishers
9 5 DO: Geiz Myokoin - Tsukuyomi - Junichiro Tokiwa
Futaros - Ataru Hisanaga - Shingo Hisanaga - Iroha Kagura - Master Gamano - Sara - Ms. Sailor - Oda Nobunaga - Clara Steinbelt - Gyuzo - Pietro - Resistance Captain
Legend Riders
Kamen Rider: Takeshi Hongo
Kuuga: Yusuke Godai
Agito: Shoichi Tsugami - Takahiro Omuro
Ryuki: Shinji Kido - Dark Shinji - Ren Akiyama - Takeshi Asakura - Miyuki Tezuka - Jun Shibaura - Goro Yura
555: Takumi Inui - Masato Kusaka
Blade: Kazuma Kenzaki - Hajime Aikawa
Hibiki: Hitoshi Hidaka - Tomizo Todayama - Kyosuke Kiriya
Kabuto: Soji Tendo - Arata Kagami - So Yaguruma
THE FIRST/THE NEXT: Takeshi Hongo - Hayato Ichimonji - Shiro Kazami
Den-O: Ryotaro Nogami - Yuto Sakurai
Kiva: Wataru Kurenai - Jiro
Decade: Tsukasa Kadoya - Daiki Kaito - Yusuke Onodera - Natsumi Hikari
G: Goro
W: Philip & Shotaro Hidari - Ryu Terui
OOO: Eiji Hino - Michal Minato - Akira Date - Shintaro Goto
Fourze: Gentaro Kisaragi
Wizard: Haruto Soma - Kosuke Nitoh
Gaim: Kouta Kazuraba - Kaito Kumon - Takatora Kureshima
Drive: Shinnosuke Tomari - Go Shijima - Chase - Brain
Ghost: Takeru Tenkuji - Makoto Fukami
Kuuga (manga): Yusuke Godai
Amazons: Haruka Mizusawa - Jin Takayama
Ex-Aid: Emu Hojo - Hiiro Kagami - Kiriya Kujo - Kuroto Dan - Masamune Dan
Kamen Sentai Gorider: Aka-Rider - Ao-Rider - Ki-Rider - Momo-Rider - Mido-Rider
Build: Sento Kiryu - Ryuga Banjo - Kazumi Sawatari - Gentoku Himuro - Evolto
Zero-One: Aruto Hiden - Isamu Fuwa - Yua Yaiba - Jin - Horobi
Saber: Touma Kamiyama - Rintaro Shindo - Kento Fukamiya - Ryo Ogami - Ren Akamichi - Tetsuo Daishinji - Yuri - Reika Shindai - Ryoga Shindai
Chuta Ohsugi - Daita Kondou - Chikao Nezu - Hina Izumi - Shibuya Hachioji - Narita Kisarazu - Misora Isurugi - Master of Fumen - Owner - Momotaros - Urataros - Kintaros - Ryutaros - Eri Ogawa - Daisuke Okubo - Amane Kurihara - Mana Kazaya - Riki - Ramon - Deneb - Krim Steinbelt - Takeshi Kinashi - Izu - Shesta - Jun Fukuzoe - Sanzo Yamashita - Narutaki
Time Jackers
Swartz - Heure - Ora
Movie Exclusive
Tid - Finis
Kamen Riders: SOUGO Tokiwa - Kagen - Jogen - Woz
Another Riders
Another Build - Another Ex-Aid - Another Fourze - Another Faiz - Another Wizard - Another OOO - Another Gaim - Another Ghost - Another Double - Another Den-O - Another Kuuga - Another Shinobi - Another Quiz - Another Ryuga - Another Kikai - Another Zi-O (II) - Another Ryuki - Another Blade - Another Agito (troops) - Another Hibiki - Another Kiva - Another Kabuto - Another Drive - Another Decade
Movie-exclusive Another Riders
Another Zero-One - Another 1 - Another Diend
Stageshow-exclusive Another Riders
Another Rider - No Rider - Another Ohma Zi-O
Novel-exclusive Another Riders
Another Ohma Zi-O Trinity - Another Tsukuyomi - Another Geiz - Another Woz
Other Villains
Kasshine - Humanoise - Worms - Elementary Inves - Trilobite Magia - Battle Magia
Niji no Hebi: Yaminin - Dustards