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"I'll become a King!"
―Sougo's dream declaration[src]

"That's right.. Ever since I was born... I knew where I wanted to go!"
―Sougo's determination to change his fate[src]

"I will become the demon king! However, I won't be the villainous demon king. I will be the greatest, kindest demon king!"
―Sougo's declaration to change his fate and becoming Zi-O[src]

"Armor Time!"
―Zi-O's call whenever he changes forms[src]

"I think... I can do it now!"
―Zi-O's catchphrase when he feels optimistic[src]

Sougo Tokiwa (常磐ソウゴ, Tokiwa Sōgo)[1] is a 18-year-old high school student who dreams of becoming a king one day. When Tsukuyomi and Woz travel to his time from 50 years in the future, he learns that he is destined to become the tyrannical ruler of their time, Oma Zi-O. With this knowledge, he makes it his goal to be a great king through kindness by becoming Kamen Rider Zi-O (仮面ライダージオウ, Kamen Raidā Jiō). However, he faces Geiz Myoukouin, a Kamen Rider from the future who is bent on killing him to change the course of history.

History

Sougo Tokiwa was born on April 28, 2000. Living with his grand-uncle Junichiro in a clock shop, he attended high school at Hikarigamori High School, excelling in history but poor in physics. From an early age, Sougo believed that he would become a king, much to the consternation of his uncle and his friends chagrin.

The Birth of Zi-O

One day, Sougo found a mysterious watch-like item that was on the seat of his bicycle, and after examining the blank item, Sougo laid down the blank item, then went on home while minding his own. Later while bicycling down a small street up towards a stairway, a man in hood, holding a grimoire appeared out of nowhere, who told him that it would be a momentous day for him and to avoid the "red robot" before mysteriously disappearing.

He does indeed encounter the robot shortly after, run by a man in red and black attire and attacks Sougo. He is saved by a woman claiming to be from the future named Tsukuyomi in her Time Mazine. They seemingly travel back in time to 1671 Japan where she proves her legitimacy to him. Tsukuyomi warns Sougo that the watch he currently had possessed a tremendous amount of power and using it will make Sougo turn into the worst and lowest overlord, Oma Zi-O. Just before Sougo could reply, a fight occurs and Tsukuyomi decide to test whether Sougo is really Oma Zi-O or not by forcefully putting Sougo in the middle of the fight. The citizens proceed to throw Sougo to a river and doing so makes peace for themselves. Instead of lamenting his misfortune, Sougo is relieved to see that the group had reconciled, much to the citizens’ amusement. However, a red Kamen Rider, Geiz manages to tail them and the two retreat back into the Time Mazine.

When Tsukuyomi was being attacked by Geiz, Sougo gets kicked out of the mech and wakes up in a strange world with a huge wall in the horizon. As he ponders over this, a Smash attacked him but luckily Kamen Riders Build and Cross-Z appears to help. After revealing their names, Sento and Ryuga bring Sougo to the cafe Nascita.

As Ryuga drinks from a carton of milk, Sougo sees the expiration date and realized that he's indeed in the year 2017. Sento affirms that Sougo is indeed from the future since, after some analysis, Sougo's Ridewatch is different from any current technology. Before Sento can ask about the future, Tsukuyomi appeared and shot the three of them into unconsciousness using Faiz Phone X, in order to prevent Sougo from interfering with the past any more than necessary. He wakes up in his old home, believing it to be all a dream. Later, he encounters a monster with the similar look of Kamen Rider Build attacking civilians. He tries to stop him but is quickly subdued twice.

Sougo was approached by the prophet, Woz once again, who then tells him that he'll become an overlord who will reign over the future. Tsukuyomi desperately tries to warns Sougo to not use the Ridewatch. However, after some quick thought, Sougo decided to not become a tyrant, but to become a beloved overlord of the future, much to both Tsukuyomi and Woz’s surprise. After that, the blank Ridewatch revealed itself to becoming the Zi-O Ridewatch, then Sougo is given the Ziku-Driver by Woz to transform and battle the elusive Kaijin Rider. As it is his new beginning of becoming a Kamen Rider, Woz announced the introduction of Sougo as he was now Kamen Rider Zi-O, the King of Time, much to Tsukuyomi’s disappointment.

He is able to go on par with Another Build and is quick to defeat him using the Zikan GiLade finisher. Geiz enters the fray, seemingly frustrated with Sougo on his decision and Tsukuyomi as she failed in convincing him. Geiz proceeds to ask why Sougo became Zi-O, which the latter replied that it was probably decided from the moment he was born. Reminiscing Oma Zi-O’s declaration, Geiz deems Sougo as irredeemable and transforms using both Geiz and Ghost Ridewatchs to become Kamen Rider Geiz GhostArmor and advances towards Zi-O.[Kingdom 2068]

Obtaining the Power of Build

Geiz proceeds to attack Zi-O relentlessly until Tsukiyomi piloting the Time Mazine and tells Zi-O to run. After a lenghty bike chase, he manages to do so. Sougo then encounters Woz once more, who formally introduces himself. He states that the two that hail from the future are trying to change the future. Woz then warns him a group named the Time Jackers who have the same goal but to have another king of their choosing in the future. He claims to be the one keeping the timeline the same and that he's on Sougo side, remarking that his conquest has only just begun. He later finds Another Build fighting Geiz and rescues the two. With his Time Break, Zi-O seemingly defeats the monster once more, only to find it again within seconds. Believing the real Build could defeat him, he rushes off to find him.

Later, Sougo went to the same cafe to meet Sento and Ryuga again. However, due of Another Build's appearances, Nascita's scenery had changed, the fridge that was the passway to the Build laboratory is gone and bot

Sougo meets Ryuga and Sento

Sento tells his successor, Sougo, to take care of his past.

h Sento and Ryuga become Lynks Band fanboys instead, seemingly forgetting their memories of being Kamen Riders and their encounter with Sougo the previous year. After Geiz destroy Another Build once again, Sento and Ryuga memories returned, and two blank-ridewatches that they somehow possessed turns into Build and Cross-Z Ridewatches. Sento then said to Sougo to take care of his past self and gives him the Build and Cross-Z Ridewatches. Although he doesn't understand at first, he quickly realizes that Another Build showed up and attacked Sento and Ryuga in 2017 and Sougo went back in time to help defeat it. He meets up again with Geiz and Tsukuyomi informing them and the two Riders head to their Time Mazines and head back to the past. 

Sougo and Geiz manage to arrive at the very scene, only to be interrupted by Uhr of the Time Jackers. He tells Sougo that the host of Another Build's fate was to have his athletic career abruptly ended in an accident and that he helped him move forward. The latter argues that despite his ability to time travel and intervene with other's lives, it's that individual that can determine his or her future. Impressed with his statement, Wool wonders what his future will look like and walks away. The two Riders transform and join up with Build and Cross-Z to take down Another Build. However, the change of events in the timeline has caused Build's and Cross-Z's powers to disappear, seemingly to have transferred into the Cross-Z and Build Ridewatches. Zi-O uses the Build Ridewatch to become Zi-O BuildArmor, with Woz appearing and remarking this moment. Zi-O Build Armor now able to damage the monster, with Geiz subduing him with his Zikan Zax in Yumi Mode. Zi-O uses Vortex Time Break to finish the monster with Geiz utilizing the Zax's finisher equipped with the Cross-Z ridewatch. Remembering that Sento and Ryuga gave Sougo the Ridewatches, he asks the two to hold on to two blank Ridewatches for safe keeping. Sento corrects him by saying that his real name is Takumi Katsuragi, and he seems forget about Sougo. Geiz demands to know what's with sudden anomalies in the timeline, but Sougo himself is confused about it as well, only exclaiming that Sento and Ryuga will choose to become Kamen Rider Build and Cross-Z in the future.

Sougo wakes up the next morning to find out that Tsukuyomi and Geiz have rented out that his uncle's spare rooms. Tsukuyomi explains that him saving the two has questioned whether or not he will grow to become a vile dictator and have decided to keep an eye on him, with Geiz later saying his vendetta towards him hasn't ceased. Despite all this, Sougo seems to be fine with the two living under the same roof as him.[Best Match 2017]

Obtaining the power of Ex-Aid

The first day of Geiz and Tsukuyomi took a class with Sougo, Sougo didn't feel relax a bit because whatever he did, they would follow and sneak on him, especially Geiz took a look at him closely when he was about to use the toilet. During the lunchtime, he hid inside the sport warehouse and met a student played a game from GENM Corp, similar to Mighty Action X game. However, when Sougo tricked the gym teacher for covering the student to play the game in quiet, Another Ex-Aid appeared and attacked the player. Sougo transformed and fought it, but after he got thrown, Another Ex-Aid disappeared. Geiz and Tsukuyomi came to Sougo and explained that it wasn't his fault and Another Rider had appeared.

At home, Sougo thought to play the game to lure Another Ex-Aid, but his skill was beyond help as he couldn't reach the level where the student would be attacked. Tsukuyomi said about if only there was a gamer which could help as even she and Geiz couldn't play any old video game, Sougo rushly caught an idea to search a gamer and went to search for Genius Gamer M after Tsukuyomi took a look on her history tablet. Sougo late to realize if doing things like running around to search for him was 100% a difficult task but as he got tired after he had done that. But he found another victim and Another Ex-Aid escaped in a blink, making Sougo couldn't even reach for it. Woz came and told Sougo to take the victim to the doctor.

Sougo, Geiz, and Tsukuyomi took the victim to Seito hospital. There, Sougo heard of a doctor who played game with the name Emu and asked where he was. Hiiro met them and asked about the ruckus and Sougo told him of what he wanted. Hiiro recalled about Emu was missing after he played the mentioned game after Sougo revealed that the incident of the disease was related to the game. There was a note and Hiiro as he claimed that he somehow could trust them, on playing the game. The note was written in German language and Geiz able to read it, revealing that it was a code for the player when they played the game. Sougo realized the meaning of the code after Geiz translated it and played the game, making them to be dragged to the game world itself and encountered Another Ex-Aid.

Sougo and Geiz transformed and fought Another Ex-Aid, who proved formidable until they transformed into Zi-O Build Armor and Geiz Drive Armor respectively to defeat it. Emu appeared and congratulated them on cracking his code in a cold tone, before transforming into Ex-Aid and attacking them.

Personality

Sougo is described as an ambitious young man who desires to be a king. However, upon learning of his future self being a tyrant, he decides to change his fate. The current reason is yet to be known of why he is like that except the fact that Sougo somehow felt that it is his fate.

Despite his grand ambitions, Sougo is a peaceful and genuinely kind man at heart, and will gladly take physical harm if it means stopping a conflict, much to Tsukuyomi’s confusion.

Sougo seems to have a verbal tic by adding "Feels like it" (気がする, Kigasuru) in the end of most his sentences, mostly due of his optimistic approaches.

Power & Abilities

Skills

  • Vast Historical Knowledge: According to Tsukuyomi, Sougo excels in history.

 Weaknesses

  • Poor Academic Knowledge: According to Tsukuyomi, Sougo is helpless in science. This was proven when he used the BuildArmor, and instead of proper equations, it simply listed sentences stating that he 'didn't know' or 'something I learned in grade school'.
  • Video Games: Sougo lacks skill in video games.

Forms

Kamen Rider Zi-O transforms by inserting the Zi-O Ridewatch into the right-hand side of the Ziku-Driver and rotating the Driver 360 degrees.[2] He accesses Rider Armor (ライダーアーマー, Raidā Āmā)[3] forms based on previous Heisei Kamen Riders by inserting Ridewatches into the left-hand side of the Ziku-Driver.[4][5][6]

Kamen Rider Zi-O
KRZiO-Zi-O

Zi-O

"Rider Time! (Electronic beat) Kamen Rider Zi-O![6]"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 200.0 cm.
  • Rider Weight: 92.0 kg.

Ability Parameters

  • Punching Power: 8.2 t.
  • Kicking Power: 19.0 t.
  • Maximum Jump Height: 30.2 m.
  • Maximum Running Speed: 100 m. per 5.0 sec.

Kamen Rider Zi-O transforms by inserting the Zi-O Ridewatch into the right-hand side of the Ziku-Driver. His base form's visor reads "Rider" (ライダー, Raidā).

This form has two finishers:

  • Ziku-Driver finishers:
    • Time Break (タイムブレイク, Taimu Bureiku): A series of magenta-colored "Kick" (キック, Kikku) characters appear and circle the enemy. Zi-O then jumps high as the "Kick" characters merge into one and imprint on Zi-O's right foot as Zi-O performs a flying kick into the the enemy.
  • Zikan Girade finishers:
    • Giri Giri Slash: Zi-O uses the power of a Ridewatch in the Zikan Girade in Ken Mode and performs a powerful slash.
      • Zi-O: Zi-O coats the Zikan Girade in magenta energy before slashing the enemy. The slash then projects two silver energy clocks upon impact.

Appearances: Be The One, Zi-O Episodes 1-4


BuildArmor
KRZiO-Zi-Obuild

BuildArmor

"Rider Time! Kamen Rider Zi-O! Armor Time! (Electronic beat mixed with RabbitTank-esque music) Best Match! Build!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 200.0 cm.
  • Rider Weight: 108.0 kg.

Ability Parameters

  • Punching Power: 10.1 t.
  • Kicking Power: 23.5 t.
  • Maximum Jump Height: 37.5 m.
  • Maximum Running Speed: 100 m. per 4.0 sec.

BuildArmor (ビルドアーマー, Birudo Āmā) is Zi-O's Kamen Rider Build-based form accessed by inserting the Build Ridewatch into the left-hand side of the Ziku-Driver, invoking Kamen Rider Build's RabbitTank Best Match Form. Its visor spells out "Build" (ビルド, Birudo) and it bears the Fullbottle Shoulders (フルボトルショルダー, Furubotoru Shorudā).

In this form, he wields the Drill Crusher Crusher (ドリルクラッシャークラッシャー, Doriru Kurasshā Kurasshā), themed after Drill Crusher and the Fullbottle Shoulders allow him to harness the abilities of the Rabbit and Tank Halfbodies.

Compared to his base form in terms of stats, Zi-O is able to hit harder and has more agility.

This form's finisher is the Vortex Time Break (ボルテックタイムブレイク, Borutekku Taimu Bureiku): Zi-O performs a variation of the RabbitTank's Vortex Finish that has the energy chart occupy a straight line he slides on as he slashes and stabs the enemy several times with the Drill Crusher Crusher.

Appearances: Be The One, Zi-O Episode 2-4


Ex-AidArmor
File:Zi-O Ex-Aid Armor.PNG

Ex-AidArmor

"Rider Time! Kamen Rider Zi-O! Armor Time! (Electronic Pop mixed with Rider Gashat-esque music) Level Up! Ex-Ai~d!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

Ex-AidArmor (エグゼイドアーマー, Eguzeido Āmā) is Zi-O's Kamen Rider Ex-Aid-based form accessed by inserting the Ex-Aid Ridewatch into the left-hand side of the Ziku-Driver, invoking Kamen Rider Ex-Aid's Action Gamer Level 2 and wielding fist weapons based on the Gashacon Breaker. Its visor spells out "Ex-Aid" (エグゼイド, Eguzeido) and its shoulder pads are modeled after Rider Gashats.

This form's finisher is the Critical Time Break (クリティカルタイムブレイク, Kuritikaru Taimu Bureiku).

Appearances: Zi-O Episode 4


GaimArmor
Zi-OGaimArmor

GaimArmor

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

GaimArmor (鎧武アーマー, Gaimu Āmā) is Zi-O's Kamen Rider Gaim-based form accessed by using the Gaim Ridewatch in the left-hand side of the Ziku-Driver, invoking Gaim's Orange Arms. Its visor spells out "Gaim" (ガイム, Gaimu) and its shoulder pads are modeled after Lockseeds. [7]


FourzeArmor
Zi-OFourzeArmor

FourzeArmor

"Rider Time! Kamen Rider Zi-O! Armor Time! 3, 2, 1! Fourze![8]"
―Transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

FourzeArmor (フォーゼアーマー, Fōze Āmā) is Zi-O's Kamen Rider Fourze-based form accessed by using the Fourze Ridewatch in the left-hand side of the Ziku-Driver, invoking Fourze's Base States. Its visor spells out "Fourze" (フォーゼ, Fōze).[7]

This form's finisher is the Limit Time Break (リミットタイムブレイク, Rimitto Taimu Bureiku).[8]


OOOArmor
Zi-OOOOArmor

OOOArmor

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

OOOArmor (オーズアーマー, Ōzu Āmā) is Zi-O's Kamen Rider OOO-based form accessed by using the OOO Ridewatch in the left-hand side of the Ziku-Driver, invoking Kamen Rider OOO's Tatoba Combo. Its visor spells out "OOO" (オーズ, Ōzu) and its chest reads "Taka" (タカ), "Tora" (トラ), and "Batta" (バッタ). [9]


DoubleArmor
Zi-ODoubleArmor

DoubleArmor

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

DoubleArmor (ダブルアーマー, Daburu Āmā) is Zi-O's Kamen Rider Double-based form accessed by using the Double Ridewatch in the left-hand side of the Ziku-Driver, invoking Double's CycloneJoker. Its visor spells out "Double" (ダブル, Daburu). [7]


KivaArmor
GatesKivaArmor

KivaArmor

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

KivaArmor (キバアーマー, Kiba Āmā)[9] is Zi-O's Kamen Rider Kiva-based form accessed by inserting the Kiva Ridewatch into the left-hand side of the Ziku-Driver. Its visor spells out "Kiva" (キバ, Kiba).


Den-OArmor
Zi-ODen-OArmor

Den-OArmor

"Rider Time! Kamen Rider Zi-O! Armor Time! Sword Form! Den-O![10]"
―Transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

Den-OArmor (電王アーマー, Den Ō Āmā) is Zi-O's Kamen Rider Den-O-based form accessed by using the Den-O Ridewatch in the left-hand side of the Ziku-Driver, invoking Den-O's Sword Form. Its visor spells out "Den-O" (デンオウ, Den Ō).[9]

This form's finisher is My Time Break (俺のタイムブレイク, Ore no Taimu Bureiku)[10].


KabutoArmor
Zi-OKabutoArmor

KabutoArmor

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

KabutoArmor (カブトアーマー, Kabuto Āmā) is Zi-O's Kamen Rider Kabuto-based form accessed by using the Kabuto Ridewatch in the left-hand side of the Ziku-Driver, invoking Kabuto's Rider Form. Its visor spells out "Kabuto" (カブト, Kabuto). [7]


HibikiArmor
Zi-OHibikiArmor

HibikiArmor

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

HibikiArmor (響鬼アーマー, Hibiki Āmā) is Zi-O's Kamen Rider Hibiki-based form accessed by using the Hibiki Ridewatch in the left-hand side of the Ziku-Driver. Its visor spells out "Hibiki" (ヒビキ, Hibiki). [7]


BladeArmor
Zi-OBladeArmor

BladeArmor

BladeArmor (ブレイドアーマー, Bureido Āmā) is Zi-O's Kamen Rider Blade-based form accessed by using the Blade Ridewatch in the left-hand side of the Ziku-Driver, invoking Blade's Ace Form. Its visor spells out "Blade" (ブレイド, Bureido). [9]


RyukiArmor
ADVENTRYUKIIIIIII

RyukiArmor

"Rider Time! Kamen Rider Zi-O! Armor Time! (Electronic beat mixed with V-Buckle-esque music) Advent! Ryuki![11]"
―Transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

RyukiArmor (龍騎アーマー, Ryūki Āmā) is Zi-O's Kamen Rider Ryuki-based form accessed by using the Ryuki Ridewatch in the left-hand side of the Ziku-Driver. Its visor spells out "Ryuki" (リュウキ, Ryūki)[7] and its shoulder pads are modeled after the Drag Visor[12].

This form's finisher is the Final Time Break (ファイナルタイムブレイク, Fainaru Taimu Bureiku).[11]


AgitoArmor
Zi-OAgitoArmor

AgitoArmor

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

AgitoArmor (アギトアーマー, Agito Āmā) is Zi-O's Kamen Rider Agito-based form accessed by using the Agito Ridewatch in the left-hand side of the Ziku-Driver, invoking Agito's Ground Form. Its visor spells out "Agito" (アギト, Agito). [7]


KuugaArmor
File:Zi-OKuugaArmor.png

KuugaArmor

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

KuugaArmor (クウガアーマー, Kūga Āmā) is Zi-O's Kamen Rider Kuuga-based form accessed by using the Kuuga Ridewatch in the left-hand side of the Ziku-Driver, invoking Kuuga's Mighty form. Its visor spells out "Kuuga" (クウガ, Kūga). [7]




DecadeArmor
Zi-ODecadeArmor

DecadeArmor

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

DecadeArmor (ディケイドアーマー, Dikeido Āmā)[13] is Zi-O's Kamen Rider Decade-based upgrade form. Accessed with the Decade Ridewatch into which other Ridewatches can be inserted, Zi-O can augment this form with the powers and appearances of other Riders' upgrade forms. By default, its visor reads "Decade" (ディケイド, Dikeido).


Build Power-Up
Zi-ODecadeArmorBuild

DecadeArmor (Build RabbitTankSparkling)



These Rider Armors are normally used by Kamen Rider Geiz.

GhostArmor
File:Zi-O Ghost Armor.PNG

GhostArmor

"Rider Time! Kamen Rider Zi-O! Armor Time! (Guitar beat with Ghost Driver's standby) Kaigan! Ghost!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Parameters

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

GhostArmor (ゴーストアーマー, Gōsuto Āmā) is Zi-O's Kamen Rider Ghost-based form accessed by inserting the Ghost Ridewatch into the left-hand side of the Ziku-Driver, invoking Ghost's Ore Damashii. Its visor spells out "Ghost" (ゴースト, Gōsuto) and and it bears the Eyecon Shoulders (眼魂ショルダー, Aikon Shorudā).

This form's finisher is the Omega Time Break (オメガタイムブレイク, Omega Taimu Bureiku):



Equipment

Devices

Weapons

Handheld weapons:

Suit-equipped weapons:

Vehicles

Relationships

  • Tsukuyomi:
  • Geiz Myoukouin/Kamen Rider Geiz: Geiz strongly believes Sougo is Oma Zi-O and is absolutely determined to kill him before he could become Oma Zi-O to prevent the future where Sougo supposedly becomes the tyrant that rules all with an iron fist. He refuses to call Sougo by his real name and cruelly refers to him as Oma Zi-O.
  • Woz:
  • Junichiro Tokiwa:

Past Kamen Riders:

Behind the Scenes

Portrayal

Sougo Tokiwa is portrayed by So Okuno (奥野 壮, Okuno Sō). As Kamen Rider Zi-O, his suit actor is Seiji Takaiwa (高岩 成二, Takaiwa Seiji).

Rider No.

As the leading rider protagonist of Kamen Rider Zi-O, Zi-O is labelled Kamen Rider #35 (仮面ライダー35号, Kamen Raidā Sanjūgogō) and Heisei Rider #20 (平成ライダー20号, Heisei Raidā Nijūgō).

Etymology

Sougo Tokiwa's name is play on Tokiwa-sō, the place where Shotaro Ishinomori lived and started his manga career during 1956 to 1961. "Tokiwa" also carries the word (とき, Toki), which can be translated into time when it is written in kanji "時".

"Zi" in Zi-O's name could mean either time (, Ji) or character (, Ji), representing his "watch" and "Katakana" motifs while the "O" means king (, Ō). It is a pun on English word "Zero".

Notes

2018-2019 Next Rider
  • 10th of the Phase 2 Heisei Riders 20th of the leading Heisei Riders overall, Zi-O was first foreshadowed in the Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders guidebook page 48, represented by a space following Build marked as "NEXT RIDER?" With Emperor Akihito set to abdicate in April 2019, thus closing Japan's Heisei era, Zi-O can be expected to be the last Heisei Rider.
File:Undergo Buttobasoul.jpg
  • Kamen Rider Zi-O's official design was first revealed in Kamen Rider Buttobasoul accidentally and resulted in the machines needing to undergo matienance after the reveal..[15] His legend forms were soon after revealed by a Chinese printing industry staff unintentionally during Kamen Rider Battle: Ganbarizing posters making.[16]
  • Zi-O is the second Rider with a magenta & black color scheme since Decade.
    • Zi-O's suit design also made him an inverted color of Decade and close to Faiz
  • Zi-O's suit design is based on Rolex watches.
  • Zi-O's boots have the katakana for "kick" (キック) on the soles.
  • The hands on Zi-O's face is 10:10, which is a rough common setting of watches and also a clear reference as his status as the 20th Heisei Kamen Rider.
    • This makes Sougo the first Heisei Rider since Tsukasa Kadoya/Kamen Rider Decade to show their rider number in a certain way for decade he had a cross style X design on his chest armor which in roman numerals X represents the number 10.
  • Uniquely, Zi-O's forms appear as an inversion of Decade's, where the forms conform to the core design and the summoned weapons are modified to either fit the design of the trinkets or the aesthetics of the rider's form, instead of both forms and weapons being their normal designs.
    • Coincidentally, Zi-O's Ridewatch gives access to the alternate forms of other riders similar to how Rider Cards allowed for form changing.
    • Unlike Diend, the secondary Rider also possesses forms based on other Riders, extending their design aesthetics to said forms, instead of summoning them.
  • Zi-O is the first Rider since Decade not to have a unique name for his default form.
  • Zi-O's finisher names are comprised of Legend Riders' finisher name + "Time Break":
  • Zi-O's DecadeArmor form has similarities to Kamen Rider Build's Hazard form's and Kamen Rider Ghost's Toucon Boost Damashii form as all 3 are super forms used by the riders that can also form change too.


Appearances

References

Icon-zi-o 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 - Sougo of 3 days later - Mirror World - B - C - D - E - F - Robot Sougo - True Sougo
Future Kamen Riders
2022 (Rentaro Kagura) - 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
Gear
Transformation Devices
Ziku-Driver - Ohma Zi-O Driver - Beyondriver - Miraidriver (Shinobi, Hattari, Quiz, Kikai, Ginga) - NeoDecadriver - NeoDiendriver - K-Touch21
Ridewatch-related
Ridewatches - Miridewatches- Ridewatch Holder - Ridewatch Daizer - Faizphone X - Taka Watchroid - Kodama Suika Arms
Weapons
Zikan Girade - Zikan Zax - Ride HeiSaber - Zikan Despear - Saikyo Girade - Zikan Jaclaw - Barlckxs' Sword
Vehicles
Ride Striker - Time Mazine - Dai Mazine
Others/Terminology
Rider Armors - Ohma Advent Calendar - Future Note - Time Finishers
Allies
9 5 DO: Geiz Myokoin - Tsukuyomi - Junichiro Tokiwa
Others
Futaros - Ataru Hisanaga - Shingo Hisanaga - Iroha Kagura - Master Gamano - Sara - Miss 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 - Shinji Kido (Mirror World) - 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 - Poppy Pipopapo - 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 - Is - Isamu Fuwa - Yua Yaiba - Jin - Horobi
Saber: Touma Kamiyama - Rintaro Shindo - Kento Fukamiya - Ryo Ogami - Ren Akamichi - Tetsuo Daishinji - Yuri - Reika Shindai - Ryoga Shindai
Revice: Sakura Igarashi - Hana Natsuki
Others
Chuta Ohsugi - Daita Kondou - Chikao Nezu - Hina Izumi - Shibuya Hachioji - Narita Kisarazu - Misora Isurugi - Fumen Master - Owner - Momotaros - Urataros - Kintaros - Ryutaros - Eri Ogawa - Daisuke Okubo - Amane Kurihara - Mana Kazaya - Riki - Ramon - Deneb - Krim Steinbelt - Takeshi Kinashi - Shesta - Jun Fukuzoe - Sanzo Yamashita - Narutaki - Akiko Narumi - Sawa Takigawa - Kanon Fukami - Lovekov
Time Jackers
Swartz - Heure - Ora
Movie Exclusive
Tid - Finis
Quartzer
Kamen Riders: SOUGO Tokiwa - Kagen - Jogen - Woz
Other Members: Q-YORI - Q-TOMO - Q-KIMI - Q-YEAH - Q-KENZO - Q-DAICHI
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 - Genin - Humanoise - Worms - Elementary Inves - Trilobite Magia - Battle Magia
Black Satan
Mitsuko Fujimoto - Yuriko Kuroe - Devil Hana
Footsoldiers: Black Satan Soldiers
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