Icon-gaim.png This article is about a/an rider in Kamen Rider Gaim.

"Do not....underestimate a pattisier. I've been training for this moment!"
―Hideyasu's entrance to aid Kaito and Minato[src]

Hideyasu Jonouchi (城乃内 秀保 Jōnouchi Hideyasu) is the former scheming leader of Team Invitto who used the Donguri Lockseed before it was destroyed, along with his personal Sengoku Driver to transform into Kamen Rider Gridon (仮面ライダーグリドン Kamen Raidā Guridon), the name he hated at first but eventually grew on him. He briefly replaced it with the Matsubokkuri Lockseed and the mass-produced Sengoku Driver to transform into a Kurokage Trooper (黒影[クロカゲ]トルーパー Kurokage Torūpā, lit. "Black Shadow Trooper"), before its short demise by Kohgane.


Before Hase battles Team Gaim, Hideyasu warns him that he couldn't win against Team Gaim. Shock! The Rival's Banana Transformation!?

Alliance with Team Baron

Sometime later, Kaito forms an alliance with Teams Raid Wild and Invitto as he gives them Lockseeds to win against Gaim. After Team Gaim finish dancing, Hideyasu appears as he battles the team with the Ichigo Lockseed Kaito gave him; however Mitsuzane got his own Sengoku Driver as he transformed into Armored Rider Ryugen and ended up being defeated by the new rider. Birth! The Third Grape Rider!

Gaining a new power

Hideyasu makes his debut as an Armored Rider alongside Ryoji.

After he loses his Lockseed to Armored Rider Ryugen, Hideyasu goes to Kaito's place for a new Lockseed. As he gains a Lockseed from him, Kaito started to mock him as he is weak, which made Hideyasu question the alliance. After getting a Donguri Lockseed from Kaito, he then went to Drupers and finally understands what Hase says before telling him how foolish they were in allying with Baron, thus telling him that they will be Baron's slaves. Refusing to let that happen, they would need to have a chance to be on the same level as Kaito, and thus gaining Sid's attention as they received Sengoku Drivers from him. After Baron's Inves are defeated, he and Hase appear as they transform into Armored Riders Gridon and Kurokage respectively, which surprises Team Gaim. Revival! Ichigo Arms of Friendship!

First fight and confrontation with Bravo

"I am Armored Rider Kurokage"
"Eh, we are naming ourselves? Then I am..."
"Oh, this is Armored Rider Gridon"
―Kurokage naming Gridon much to Team Gaim's amusement[src]

Shortly after transforming, Hase announces his name as Kurokage. Realizing that they need names for their Armored forms, Hideyasu tried to think of a name only for Hase to name him Gridon (Much to the amusement of Team Gaim) Despite his own dislike of the name, Gridon became his official name thanks to DJ Sagara. After they transform, they easily beat up Baron, but Team Gaim's Armored Riders finish them off, also gaining their Lockseeds. Sometime later, Hideyasu and Hase buy replacement Lockseeds as he notices one member of Red Hot got a Sengoku Driver and a Lockseed from Sid. Later, Kurokage and Gridon were doing some training until some people arrive, thinking that there will be a battle. Oren then reveals that he announced the battle as he transforms into Armored Rider Bravo to fight Gridon and Kurokage. Durian Rider, Go to War! However, Gridon was later easily defeated by Bravo. Great Ball Watermelon, Big Bang!

All Armored Riders Gathering, Battle Inside Helheim Forest

While Hideyasu was doing his job along with Ryoji during the holidays, Ryoji got a call from Kouta about the new game that Team Gaim have created. The team leaders approach Sid and ask him for Lockvehicles, but he tells them that the device won't be finished until Christmas. The next day, the team leaders have gathered, including Oren, however Inves start to attack them. As the team leaders were wondering if the Inves are part of the game, Mitsuzane tells them that the monsters are not in the game. So they transform and enter the forest one by one. Before Gridon entered the forest along with Kurokage, he gives Ryugen a "present" by throwing a Lockseed to an Inves, so they would have a chance to leave. Rider Great Assembly! Revealing the Mystery of the Forest!

As he enters the forest, Gridon is already hiding from the Armored Riders, until Kurokage scared him. Kurokage tell Gridon to gather many Lockseeds as possible while he fights the Riders. As Gridon found a bunch of premature Lockseeds, Inves started to attack him, but he manages to fight back. Out of nowhere, the white Armored Rider overpowers Gridon as he tells his troops to sent Hideyasu back to the real world. The Truth Behind the Christmas Game

After Team Baron beats Team Raid Wild, Hase demanded him to fight them, but Hideyasu tells him that he originally wanted the stage where Team Raid Wild are dancing and since Hase's team no longer have an Armored Rider, his team have no chance of winning as Hideyasu leaves while feeling sorry for Hase. It is revealed that Hideyasu does really want to help Hase, but his fighting skill is not good enough, so he might not win against Baron. In order to train, he went to Charmant and begged Oren to teach him how to fight, which he accepts. However before that can begin, Hideyasu must work for Oren at his shop as payment, in which later during an Inves outbreak when the citizens blames on the Beat Riders for the incidents of having their relatives and friends infected and during Oren's latest interview, Hideyasu later sees this as a mixed blessing as he is not subject to threats like the other Beat Riders, which made him lucky to be under Oren's wings. New Generation of Rider Appears!

Stealing Kouta's Belt Task

Yoko gives Oren & Hideyasu an upgraded Sengoku Drivers.

After Oren becomes a Yggdrasill member, as well as Hideyasu by association, they are called by a mystery guy to set a trap on kidnapping Kouta's sister, Akira, in order to retrieve his Sengoku Driver. As he tries to torture Akira while she's eating a plate of desserts, he tries to transform, but was tricked by Oren for trying to hurt his "customer", and does so by switching Hideyasu's Donguri Lockseed with a fake that contains Oren's image, before Hideyasu, Yoko, and the mystery guy finds out what Oren is up to, thus leading him to be knocked out by a frying pan. The Peach Rider, Marika, Descends!

All-Team Dance Show

Hideyasu tries to figure out which Lockseed is his own and when he chooses, it reveals to be the fake and coincidentally multiple cans fall onto him from a nearby garbage man. Oren surprises him and kicks him to the ground, where Hideyasu notices a flier for the all-team dance show, which prompts Oren to knock him down to the ground believing he has betrayed him. He later helps Oren with his propaganda against the Beat Riders. At the dance show, Hideyasu helps Oren disrupt the show with summoned Inves. When all the other teams arrive to support Team Gaim and Team Baron and begin to dance, Hideyasu turns the music off but the Beat Riders resume their dance with his own team noticing he is present and push him to the stage and put the music back on. With no choice, Hideyasu joins in with the rest of the teams to dance. Farewell, Beat Riders

Temporarily Spread the Hate Towards Beat Riders and Aware of the City's Danger

After sometime, he and Oren appeared to try to turn the public against Zack and Peko by insisting that giving up their Inves Game is just a propaganda. However, their speech was interrupted by a swarm of Elementary Inves, which are later finished off by Oren. The Invasion Begins with the End of the World

After Hideyasu witnesses the Armored Riders' battle against the Inves, he finally realizes that the Inves Game ended. He sees his teammate, but she hangs out with Team Gaim's teammates as they started to make fun of Hideyasu. He started to feel bad of himself as Oren decides to take Hideyasu on a training. However, Hideyasu stormed out of Charmant as he doesn't see the purpose of the training. Later, he hangs out in Drupers by himself until Kouta appears. Feeling jealous of him, Oren manage to find Hideyasu as he blames the Beat Riders. Hideyasu quickly hide as Oren reveals that he was preparing for his greatest moment of his life. He then arrives where Bravo and Gaim were fighting the Inves as Hideyasu decides to join the fray. However, Gridon blocks the attack from the Inves to protect Bravo before he faints, as he gains courage. As he gain conscious, Hideyasu informs Oren that the Inves Game actually ended. Gridon and Bravo, the Strongest Tag

Inves Invasion

Finally completed his training, Hideyasu and Oren arrive to aid the Riders to fight the Inves and Demushu, however the Riders were overpowered easily by the Over Lord until Kouta appears to finish off the Over Lord with his new form, Kiwami Arms. The Strongest Power! Kiwami Arms

Thanks to the communication jamming caused by Ryoma, Hideyasu, Mai and Peko are unable to watch TV and connect to the Internet about news on the Inves invasion led by Over Lord Redyue. Luckily, Minato suggest the Armored Rider Alliance to use the portable communicator to be able to communicate in far range while evacuating the citizens out of Zawame safely, in which Hideyasu strongly agrees. Beat Riders' Great Gathering

Hideyasu later aids Oren and Zack to battle against hundreds of Inves capturing citizens. He receives the Suika Lockseed and utilizes Suika Arms. With the help of Bravo, he was able to crush countless Inves before reverting back to his Ride Wear form. The King's Power and the Queen's Resurrection

Back in Team Gaim's garage while Oren still having duty patrolling around Zawame, he, along with the other Beat Riders hears from Kouta that Mitsuzane has been using the Beat Riders and joined a villain's side because of Ryoma and Sid's manipulation to open into darkness. But Kouta and Mai still disbelieves about Mitsuzane's current true allegiance with Over Lord. Brother's End! Zangetsu vs. Zangetsu Shin!

After hearing about Ryoma's plan, Hideyasu and the others refused to cooperate at first. They were warned by Yoko to stay sharp about Ryoma. Hideyasu, along with Kouta, Kaito, and Oren follow along with Ryoma's plan and break into the Yggdrasill Tower. Gaim and Baron break into the inside of the tower while Bravo and Gridon take on the Inves remaining outside Zawame. The Do-or-Die Tower Break-In Strategy!

Hideyasu and Oren later fight Mitsuzane for Kaito to escape. However, despite being two-on-one, they were no match for him, causing them to attack with maximum power before escaping. Clash! The Over Lord King

The Final Battle

Hideyasu is defeated by Knuckle and Marika, along with his Sengoku Driver and Donguri Lockseed.

After Kaito's betrayal and subsequent transformation into Lord Baron, Hideyasu along with Oren and Zack discover him in the middle of Zawame accompanied by Yoko. Horrified by Kaito's ability to summon Inves without a Lockseed, Hideyasu and Oren transformed to battle him and the newly summoned Inves, although Hideyasu is intercepted by Yoko after she transforms into Marika. Despite Hideyasu's best efforts, he is no match for Yoko's superior skill, and is defeated after she is backed up by Zack when he decides to join Kaito in his quest for conquest. The resulting double-team of Knuckle and Marika results in the destruction of Hideyasu's Donguri Lockseed, though Kaito spares both him and Oren in order to deliver a warning to the others. He along with other survivors at Drupers were evacuated from Zawame temporarily by the JDSF, until Kouta was able to stop Kaito, save the world and left to a new world with Mai.

3 months later, Hideyasu has helped Oren to open the new Charmant after Zawame has been reclaimed and rebuilt. Still unaware of Hase's fate, he is seen posting a missing poster of his late friend among the many posted in the city. Though saddened by the tragedy, Oren lectures him that past mistakes cannot be undone, and those who commit them must move on for their future. Hideyasu also wonders what happened to Mitsuzane, with Oren assuring him that the young Kureshima will find a better place for the future.

Hideyasu transform into Kurokage.

With the sudden appearance of Kamen Rider Jam, Hideyasu convenes with the other surviving former Riders to discuss the best plan of action. He becomes distraught after learning the truth of Hase's demise from Takatora before stealing a suitcase containing a functioning mass-produced driver and Matsubokkuri Lockseed. Standing up to Jam and the Grasshopper Monster, Hideyasu transforms into Armored Rider Kurokage like Hase before him, determined to honor his late friend's memory. Unfortunately, the low power offered by the Matsubokkuri Lockseed and Hideyasu's low fighting ability is unable to compare to Jam and the Grasshopper Monster, resulting in Hideyasu being defeated and his Driver being destroyed. Before Hideyasu can be slain, Mitsuzane appears to save him, transforming into Ryugen once more.

Other Events

Kamen Rider × Kamen Rider Gaim & Wizard: The Fateful Sengoku Movie Battle


A competition is being held in Zawame City between Armored Riders Gaim, Ryugen, Baron, Kurokage, and Gridon with a batch of Lockseeds from DJ Sagara as a prize when a Crack opens amid the battle and the Utsubokazura Kaijin appears from it, attacking Mai. Gaim, Ryugen, and Baron protect Mai and pursue the Inhumanoid as it retreats through the Crack. During the credits scene, the competition resumes as Hideyasu and Hase are about to battle as the last contestants remaining, however Kouta, Kaito, Mitsuzane and Mai returns to the competition, much to the loud cheers from the crowd in order to continue the competition.Kamen Rider × Kamen Rider Gaim & Wizard: The Fateful Sengoku Movie Battle

Gaim Gaiden: Kamen Rider Baron

Jonouchi shocked.jpg

Several days later, Hideyasu tried to warn "Kaito" (unaware that he's another person that looks completely similar to Kaito) who somehow managed to get inside Charmant's kitchen before tasting the cake that "Kaito" baked at the kitchen. Moments later, he gets berated by Oren for letting an unknown person entering Charmant's kitchen, and he proceeds to get knocked out by a pan that falls on his head. It was also here that Hideyasu starts to accept his Rider name Gridon when Shapool recognizes him as Gridon. Gaim Gaiden: Kamen Rider Baron

Kamen Rider × Kamen Rider Drive & Gaim: Movie War Full Throttle

Drupers member witness Kouta falling.png

Hideyasu was talking with Zack at Drupers, while they both watch Oren criticize Bando's cake work. Hideyasu then asks Zack what Mitsuzane had been doing lately, and Zack replies that he is back to school and is helping his brother rebuild Zawame. At the end of the movie, Oren, Zack, Hideyasu, Takatora, and Mitsuzane appear to Kouta and Mai as the two was about to say farewell to them.Kamen Rider × Kamen Rider Drive & Gaim: Movie War Full Throttle

Gaim Gaiden: Kamen Rider Knuckle

Jonouchi calling Zack.jpg

It is revealed by Peko that Hideyasu won the sweets contest. Hideyasu, later as a full-time worker in Charmant, informs Zack about Neo Baron after his return from New York. Oren and Hideyasu slip into the underground headquarters of Neo Baron to save Zack. While Oren is fighting Neo Baron's grunts, Hideyasu and Zack run away, however they're cornered by a pair of Neo Baron grunts who transform into Kurokage Troopers until Mitsuzane saves them.Gaim Gaiden: Kamen Rider Knuckle

Kamen Rider Saber

Chapter 8: The One That Is Sealed Is, Arthur.

122439981 3909554745733302 2724574353414244291 o.jpg

A pair of civilians that look like Oren and Hideyasu appear in Saber in a cameo, being petrified by Medusa Megid's attack.Chapter 8: The One That Is Sealed Is, Arthur.

Gaim Gaiden: Kamen Rider Gridon vs Kamen Rider Bravo

Many years had passed and Hideyasu finally owned Charmant, officially inheriting it from Oren as Oren retired. Hideyasu became famous and improvised his income by becoming a celebrity. This however, did not make Oren proud.

A day after his celebrity event, Hideyasu was visited by Oren. Hideyasu gave him a new dessert with a new fruit after Oren had asked if he got a new fruit. Unbeknownst to Hideyasu, Oren received an information that Hideyasu used a Helheim fruit for a malicious deed. The dessert he made for Oren was immediately to be judged using the forbidden fruit, making Oren went out in rage from the Charmant. In the evening, Oren sent him a challenge letter and ordered Hideyasu to meet him at the port.

At the meeting point, Oren comes in a military outfit and attacks and tries to kill Hideyasu. It shocked him as Hideyasu mistook the challenge to be a dessert contest instead and tried to explain. When Oren transforms into Kamen Rider Bravo, a Helheim vine suddenly emerges and turns him into a mindless Bravo Kingdurian Arms. The mysterious Gridon appears and fights Bravo, much to Hideyasu's confusion. Masako tells Hideyasu to run away, but he insists that he must save his master, so he runs after the fighting Riders. While Bravo is distracted and runs after some nearby workers, the mysterious Gridon reveals himself to be Takatora and that he is using the pastry chef to lure out the true mastermind. He gives his Sengoku Driver and Donguri Lockseed to Hideyasu, allowing him to transform into Gridon on his own to stop the rampaging Bravo.

Hideyasu Jonouchi Gridon VS Bravo.jpg

Later, when Gridon fights Bravo, Gridon is defeated and knocked out of transformation by Bravo, with his Donguri Lockseed being destroyed. After Hideyasu fails to beg Bravo to come to his senses, Sylphi's nearby attack accidentally drops a Helheim's Fruit in front of Hideyasu. Although he is wearing a Sengoku Driver, the fruit doesn't change into a Lockseed as Hideyasu hopes, so he decides to eat it instead. However, before he can have a bite, he is stopped by the spirit of Ryoji Hase, who turns the fruit into a Lychee Lockseed. Hideyasu transforms into Gridon Lychee Arms and defeats Bravo, freeing him from the rampage.

While carrying Oren back on his back, Hideyasu asks him to come back to train him, and Oren gladly accepts.

Video Game appearances

Kamen Rider Battle: Ganbarizing

Gridon is among the vast majority of Kamen Riders that are available in this arcade game. Notably, he is shown to use the Legend Rider Lockseed to assume W Arms in Kamen Rider Battle: Ganbarizing.

Kamen Rider Riderbout

Kamen Rider Gridon as seen in Kamen Rider Riderbout

Kamen Rider Gridon appears as a playable character with the other Heisei and Showa Kamen Riders in Kamen Rider Riderbout.

Kamen Rider Break Joker

Kamen Rider Gridon Break Joker card

Kamen Rider Gridon appears as a playable character with other Riders and monsters in Kamen Rider Break Joker.

Kamen Rider Buttobasoul

Kamen Rider Gridon Medal

Kamen Rider Gridon is a playable character in Kamen Rider Buttobasoul.


Hideyasu is a calm-looking person and is a brilliant tactician, forming strategies of attack when the best means of winning are not available. This is shown when he attacks Team Gaim when Kouta is not around and suggesting he and Hase get their own Sengoku Drivers. Despite his confidence in strategy, he has no actual combat skills after becoming an Armored Rider due to his inexperience. This is proven during his battles against Ryugen and Bravo when he became a human shield for Kurokage. He is also a coward, hiding as Kurokage was being beaten by Bravo and preferring sneaky tactics. He is not very confident about going against long-range weapon Armored Riders like Ryugen and prefers to hide from gunfire. When everything is changed at the end of the Inves Game and a sudden appearance of the endless Inves come out of nowhere for the outbreak while seeing most of the Armored Riders trying to sacrifice themselves to defend the city, Hideyasu finally awakened his fighting spirit, overcoming his cowardliness. After completing his training, Hideyasu joins forces with the other Beat Riders in defending the city against the Inves invasion. His bravery was indeed getting stronger as he was willing to take on dozens of Inves along with Oren despite knowing that they have no chance of winning. Due to the intense training from Oren, Hideyasu also developed a sense of regret, feeling Hase's downfall into an Inves and demise at the hands of Sid was his in some ways his fault.


As with the other Armored Riders that use Lockseeds, Kamen Rider Gridon/Kurokage's forms are called Arms (アームズ Āmuzu). By pressing the Sengoku Driver's Cutting Blade down on the Lockseed after transforming from one to three times, he can activate one of three finishing moves based on his current Arms form: Squash (スカッシュ Sukasshu), Au Lait (オーレ Ōre), or Sparking (スパーキング Supākingu).

As Gridon, Hideyasu's Sengoku Driver plays European trumpet music and announces "Come On" (カモン Kamon) before every transformation, while his personal Lockseeds as Gridon are styled in pure English that is sung in a chorus-like manner. As Kurokage, Hideyasu's Sengoku Driver plays Japanese horagai music and announces "Soiya" (ソイヤ) before every transformation, while his personal Lockseeds are styled with a mix of Japanese words and English words.

Ride Wear

The Ride Wear (ライドウェア Raido Uēa) is Gridon's default form undersuit, which is briefly seen during Gridon's transformation sequence before the Armor Part attaches or when he changes Arms. However, this form is completely vulnerable to any incoming attacks when shot at directly in the suit rather than at the Arms that is descending down on the Rider.

The Ride Wear that Gridon's Sengoku Driver has is easily identifiable through its Rider Indicator (ライダーインジケーター Raidā Injikētā) faceplate. The Rider Indicator only identifies what Ride Wear a Sengoku Driver contains for simplicity and can be replaced with extensions such as the Genesis Core or Senyo Joint.

Donguri Arms

Donguri Arms

"Come on! Donguri Arms! Never give up!"
―Transformation announcement[src]

Rider Statistics:[1]

  • Rider Height: 203 cm
  • Rider Weight: 110 kg

Ability Parameters:[1]

  • Punching Power: 8.9 t
  • Kicking Power: 9.2 t
  • Maximum Jump Height: 22 m
  • Maximum Running Speed: 100 m per 6.5 seconds

Donguri Arms (ドングリアームズ Donguri Āmuzu, lit. "Acorn Arms") is Gridon's acorn-based default form. Accessed through the Donguri Lockseed, this form bears the Dome Casque (ドームカスク Dōmu Kasuku) helmet with the Nut Eye (ナットアイ Natto Ai) visor. This form debuts in episode 5.

While assuming Donguri Arms, Gridon dons the Donguri Armor Part (ドングリアーマーパート Donguri Āmā Pāto, lit. "Acorn Armor Part") and his Arms Weapon is the Donkachi. If Gridon activates his Sengoku Driver's Sparking function, he can temporarily convert the Donguri Armor Part into its nut form and spin it to use as a shield for bouncing off enemy attacks.

In this form, Gridon can throw punches stronger than both Gaim in Pine Arms and Baron in Banana Arms, though his kicking power is far weaker then the aforementioned Riders. His jumping height and running speed are the same as Gaim's in Pine Arms. Gridon is later further strengthened when his Sengoku Driver is replaced with an updated, refined model.

This Arms has three finishing attacks.

  • Sengoku Driver finisher:
    • Donkachi Giant Rotation (ドンカチ大回転 Donkachi Dai Kaiten): Gridon activates the Squash function on his Sengoku Driver and spins at high speeds with the Donkachi held out. The spinning forms an acorn projection before Gridon knocks the opponent with a high-velocity hammer slam.
    • Gridon Impact (グリドンインパクト Guridon Inpakuto): Gridon activates the Au Lait function on his Sengoku Driver and dives from above and strikes the enemy with the Donkachi.
    • Unnamed Rider Shooting: Gridon activates the Sparking function on his Sengoku Driver and swings the Donkachi, sending a pulse of energy at the target.

Hideyasu loses access to Donguri Arms in a battle against Zack and Yoko, resulting in the destruction of his Donguri Lockseed and Sengoku Driver.

Appearances: Gaim Episodes 5-7, Sengoku Movie Battle, 10-11, 25, 32, 34, 39, 41, 44, Final Stage, Kamen Rider Gaim (novel), Gaim Gaiden: Gridon VS Bravo

Lychee Arms

Lychee Arms

"Come on! Lychee Arms! You are the hero!"
―Transformation announcement[src]

Lychee Arms (ライチアームズ Raichi Āmuzu) is Gridon's lychee-based final form. Accessed through the Lychee Lockseed, this form bears the unknown helmet with the unknown visor.

While assuming Lychee Arms, Gridon dons the Lychee Armor Part (ライチアーマーパート Raichi Āmā Pāto) and his Arms Weapon is the Shine Donkachi and Shine Lychee Sword‎‎.

This form's finisher is an unnamed Rider Thrust: After Gridon activates his Sengoku Driver's Sparking function, he throws and stabs enemy with his Shine Lychee Sword, then jumps in the air, charges the Shine Donkachi with yellow energy, before hits the Shine Lychee Sword with the Shine Donkachi, causing a explosion when he strikes the opponent.

This Arms is exclusive to Gaim Gaiden: Kamen Rider Gridon VS Kamen Rider Bravo‎‎.

These Arms are normally used by a different Armored Rider. With the exception of Suika Arms, all of these forms are exclusive to Kamen Rider Battle: Ganbarizing.

Suika Arms

"Come on! Suika Arms! Odama big bang! (Bowling pins falling)"
―Transformation announcement[src]

"Yoroi/Odama/Gyro Mode!"
―Mode change announcement[src]

Suika Arms Odama Mode

Suika Arms (スイカアームズ Suika Āmuzu, lit. "Watermelon Arms") is Gridon's watermelon-based mecha form. Accessed through the Suika Lockseed, this form bears the Suika Head (スイカヘッド Suika Heddo, lit. "Watermelon Head") helmet with an unspecified visor. Suika Arms is normally used by Kamen Rider Gaim.

While assuming Suika Arms, Gridon dons the Suika Armor Part (スイカアーマーパート Suika Āmā Pāto, lit. "Watermelon Armor Part") and his Arms Weapon is currently unknown. This form can also interchange into three modes.

  • Yoroi Mode (ヨロイモード Yoroi Mōdo, lit. "Armored Mode"): Suika Arms' warrior mode, which equips Gridon with its main weapon for combat.
  • Odama Mode (大玉モード Ōdama Mōdo, lit. "Big Ball Mode"): Suika Arms' watermelon mode, which encases Gridon's entire body to use either for offensive/defensive purposes or as a mode of transportation.
  • Gyro Mode (ジャイロモード Jairo Mōdo): Suika Arms' flight mode, which allows Gridon to fire seed-like bullets from the fingertips.

Suika Arms is the most massive Arms Change, and it shows by having the most monstrous punching and kicking power once in Yoroi Mode. Consequentially, it also has the worst jumping height in all of Rider history, and any Rider can practically outrun it. Though this is rendered moot thanks to Odama Mode and Gyro Mode. Also, after a utilization, the Suika Lockseed's color becomes grey, indicating that its energy is low and needs time to recharge back to its green color before it can be used again.

This form is exclusive to Gaim Episode 34.

Matsubokkuri Arms

Matsubokkuri Arms

"Come on! Matsubokkuri Arms! Ichigeki in the shadow!"
―Transformation announcement[src]

Matsubokkuri Arms (マツボックリアームズ Matsubokkuri Āmuzu, lit. Pine Cone Arms) is Gridon's pine cone-based form. Accessed through the Matsubokkuri Lockseed, this form bears the Matsu Kabuto (マツカブト lit. "Pine Helmet") helmet with the Comb Eye (コームアイ Kōmu Ai) visor. Matsubokkuri Arms is normally used by Kamen Rider Kurokage.

While assuming Matsubokkuri Arms, Kurokage dons the Matsubokkuri Armor Part (マツボックリアーマーパート Matsubokkuri Āmā Pāto, lit. "Pinecone Armor Part") and his Arms Weapon is the Kagematsu.

Kurumi Arms

Kurumi Arms

"Come on! Kurumi Arms! Mr. Knuckle Man! (Three count bell ring with cheering crowds)"
―Transformation announcement[src]

Kurumi Arms (クルミアームズ Kurumi Āmuzu, lit. "Walnut Arms") is Gridon's walnut-based form. Accessed through the Kurumi Lockseed, this form bears the Knuck Met (ナックメット Nakku Metto) helmet with the Knuck Eye (ナックアイ Nakku Ai) visor. Kurumi Arms is normally used by Kamen Rider Knuckle.

While assuming Kurumi Arms, Kurokage dons the Kurumi Armor Part (クルミアーマーパート Kurumi Āmā Pāto, lit. "Walnut Armor Part") and his Arms Weapon is the Kurumi Bombers.

The Rider Arms (ライダーアームズ Raidā Āmuzu) are forms based on past Kamen Riders. All of these forms are exclusive to Kamen Rider Battle: Ganbarizing. However, some of these forms are also used in the norm by other Armored and New Generation Riders.

Double Arms

W Arms

"Come On! W Arms! Cyclone! Joker! Ha-Ha-Ha!"
―Transformation announcement[src]

W Arms (ダブルアームズ Daburu Āmuzu) is a Legend Rider Arms based on Kamen Rider Double's CycloneJoker form that is accessed through the Double Lockseed.

While assuming W Arms, Gridon dons the Double Armor Part (ダブルアーマーパート Daburu Āmā Pāto) and his Arms Weapon is the Trigger Magnum.

This form is used by Gridon exclusively in Kamen Rider Battle: Ganbarizing, having been used on-screen by Kamen Rider Ryugen in Kamen Rider × Kamen Rider Gaim & Wizard: The Fateful Sengoku Movie Battle.

Ride Wear

The Ride Wear (ライドウェア Raido Uēa) is Kurokage's default form undersuit, which is briefly seen during Kurokage's transformation sequence before the Armor Part attaches or when he changes Arms. However, this form is completely vulnerable to any incoming attacks when shot at directly in the suit rather than at the Arms that is descending down on the Rider.

Unlike the original Armored Riders, the Kurokage Troopers' Ride Wear isn't identifiable through their Sengoku Driver's Rider Indicator (ライダーインジケーター Raidā Injikētā) faceplate due to using mass-produced Sengoku Drivers. As a result, the Rider Indicator is blank. However, it can be replaced with extensions such as the Genesis Core or Senyo Joint.

Matsubokkuri Arms

Matsubokkuri Arms

"Soiya! Matsubokkuri Arms! Ichigeki in the shadows!"
―Transformation announcement[src]

Rider Statistics:[2]

  • Rider Height: 203 cm
  • Rider Weight: 102 kg

Ability Parameters:[2]

  • Punching Power: 6 t
  • Kicking Power: 10.2 t
  • Maximum Jump Height: 26 m
  • Maximum Running Speed: 100 m per 6 seconds

Matsubokkuri Arms (マツボックリアームズ Matsubokkuri Āmuzu, lit. Pine Cone Arms) is Kurokage's cone-based armored default form. Accessed through the Matsubokkuri Lockseed, this form bears the Matsu Kabuto (マツカブト lit. "Pine Helmet") helmet with the Comb Eye (コームアイ Kōmu Ai) visor.

While assuming Matsubokkuri Arms, Kurokage dons the Matsubokkuri Armor Part (マツボックリアーマーパート Matsubokkuri Āmā Pāto, lit. "Pinecone Armor Part") and his Arms Weapon is the Kagematsu.

In this form, Kurokage's punching power is on par with that of Gaim in Ichigo Arms, and can kick at the same power as Gaim in all of his Arms. His jump height and running speed are slightly lower than Gaim in Orange Arms.

After Hideyasu's own Sengoku Driver is destroyed, he attains the last remaining mass-production Driver and becomes the second Armored Rider Kurokage in honor of Ryoji Hase's death. Unfortunately, the Driver is destroyed shortly afterwards by Kamen Rider Jam and the Grasshopper Monster.

This form is exclusive to Gaim Episode Episode 47.

"Oren Arms"
"(Off key Oren's singing to the standby music); (Guitar riff) Bakamon! Haji o shiri nasai: (Random object falls on Hideyasu's head) Never give up!"
―Activation announcement[src]

A modified Lockseed created by Oren Pierre Alfonzo, it looks exactly like the regular Donguri Lockseed until Hideyasu attempts to insert it into the Driver. Rather than open, the lock plays a clip of Oren singing an off-key version of the normal Driver sound effect, opens on its own to reveal a picture of Oren's face and the inscription "Bakamon!" (ばかモン! Combination of "Baka" and "Come On!", more literally "Foolish Creep!") on its lower tab as any object will fall onto of his head.

  • In episode 17, inside the Charmant it drops a metal pan on Hideyasu's head while the Lockseed announces "Bakamon" followed by Haji o shiri nasai! (恥を知りなさい! lit. Shame on you!). Later, the lockseed plays Oren's version of "Never Give Up!" in a loud voice. The impact of the falling pan also causes Hideyasu comically feell ill with circling stars and 2D drawn birds appearing above his head.
  • In episode 18, while trying to figure out which of his Lockseeds was the real one, he chooses poorly and picks the wrong one twice, resulting in multiple soda cans from a garbage man's bag dropping onto him, followed by Oren jump-kicking on him instantly upon finding him. When Oren finds out about the Beat Rider Team dance event, he mistakenly thinks that Hideyasu plans to take part in it too and slams his butt onto Hideyasu's face.



  • Sengoku Driver - Transformation device (Originally used the prototype version but later switched to a customized mass production version, until the latter was destroyed by Marika and Knuckle; later replaced with a normal mass production Driver providing the Kurokage base suit in the finale, though it is destroyed shortly after its first use. He later regains another one in the novel and Gaim Gaiden Kamen Rider Gridon VS Kamen Rider Bravo)
  • Lockseeds - Gives access to Gridon/Kurokage's Arms changes, depending on which lock is used



Behind the scenes


Hideyasu Jonouchi is portrayed by Ryō Matsuda (松田 凌 Matsuda Ryō).

As Kamen Rider Gridon, his suit actor is Kazuya Okada (岡田 和也 Okada Kazuya), who was previously the suit actor for Gremlin in Kamen Rider Wizard.

Concept Art


  • Ryuta Tasaki, director for Kamen Rider Gaim, mentions in an interview that Gridon is popular among the staff and likes his little hammer. He also notes that he feels Gridon's character is one that adults will love and maybe even relate to.[3]
  • Kamen Rider Gridon is the second Rider to use a hammer as its primary weapon after Kamen Rider Kiva Dogga Form, who wielded the Demon Iron Hammer Dogga Hammer.
    • Gridon is the first Rider, however, to use a hammer in his main form.

Gridon with the other Riders in the Kyoryuger/Gaim Super Hero Time group shot.

  • Of the first five Riders in Kamen Rider Gaim who were officially revealed, Gridon is the last to appear. However, unlike the other four, Gridon's identity was not revealed until after the premiere of Gaim. Though Gridon first appears in episode five, he technically appeared from the first week, being present in the opening sequence as well as the Gaim/KyoryugerIcon-crosswiki.png Super Hero Time group shot, he was infact name-checked by Kouta in the out-of-continuity Hero Quick-List Challenge which was shown after the first episode.
  • His Rider name, Gridon, is taken from reversing the syllables of his main Lockseed (Donguri) and changing the emphasis, which is the reason why Hideyasu initially dislikes the name Gridon.
  • Gridon and Kurokage are the first Armored Riders in the series who are the leaders of Beat Rider teams to not be named after their teams. They're also the first to not be named by DJ Sagara.
  • Hideyasu as a Rider is very ironic as his Driver announces "Never Give Up" when he transforms, yet he tends to cower in fear whenever he engages in battle. However, as the series progresses, despite his heavy losses against Gaim, Bravo, and Zangetsu, Hideyasu refuses to quit being a Rider despite frequently cowering during battle, and even begged Oren to teach him to fight, which shows that in terms of character development, Hideyasu is slowly living up to his Driver's announcement.
  • Hideyasu is one of two Armored Riders to have a customized mass production Sengoku Driver, which retains the face plate used by his prototype Driver and maintaining the original Ride Wear suit.
  • Hideyasu is the only Rider in the Gaim series to never actually fight Kouta.
  • Gridon is the only Armored Rider not to fully utilize Suika Arms' true power as he was unable to control it once summoned.
  • Hideyasu's given name is one kanji change away from becoming this Hideyasu.

Legend Rider Lockseeds

  • In addition to the above Lockseeds, there are other Legend Rider Lockseeds are styled for Kurokage, as well as Gaim, Bujin Gaim, and Kamuro:
    • 1 - "Waza no Ichigō, Let's go!"
    • 2 - "Chikara no Nigō, Let's go!"
    • Riderman - "Kagakusha Met On!"
    • ZX - "Jūgō Cyborg Ninja!
    • Black - "Seiki Oh Black Sun!"
    • Shin - "Kaizou Heishi Level 3!"
    • J - "Shingeki Jumbo Formation!"
    • Shocker - "Jigoku no gundan on Parade! Eeeee!"
    • Great Leader - "Shihaisha of the World!"
    • Shocker Rider No.1 - "Nise no Hero, Dead Go!"
    • Kabuto - "Ten no Michi My Way!"
    • Den-O - "Iza Climax!"
    • Decade - "Hakaisha on the Road!"
    • Skull - "Otoko-michi Hardboiled!"
    • Fourze - "Seishun Switch On!" (Despite being canonically used by Zangetsu)
    • Wizard - "Shabadoobi Showtime!"
    • Gaim - "Fruits Gaim/Yoroi Musha on Parade!"
    • Drive - "Hitoppashiri iza Together!"


Main article: Hideyasu Jonouchi/Appearances


External Links

See also

Icon-gaim.png Kamen Rider Gaim
Armored Riders
TV Series: Kouta Kazuraba - Kaito Kumon - Mitsuzane Kureshima - Takatora Kureshima - Hideyasu Jonouchi - Ryoji Hase - Oren Pierre Alfonzo - Zack - Kurokage Troopers
Movie/Special/Stageshow-exclusive: Bujin Gaim - Ren Aoi - Lapis - Kougane - Touka Akatsuki - Shura - Kugai Kudo - Maja - Masako Suzuka
New Generation Riders
TV Series: Takatora Kureshima - Ryoma Sengoku - Yoko Minato - Lock Dealer Sid - Kaito Kumon - Mitsuzane Kureshima
Movie-exclusive: Peko - Alfred
Rider Gear
Sengoku Driver - Genesis Driver - Lockseeds - Armor Parts - Arms Weapons - Musou Saber - Sonic Arrow
Rider Machines
Sakura Hurricane - Rose Attacker - Dandeliner - Tulip Hopper
TV Series: Mai Takatsukasa - Yuya Sumii - Akira Kazuraba - Chucky - Rica - Rat - Peko - Kiyojiro Bando - Iyo - Kikaider (REBOOT)
Movie-exclusive: Ieyasu - Shu Aoi - Saki Aoi - Shapool - Azami
Beat Rider Teams: Team Gaim - Team Baron - Team Raid Wild - Team Invitto - Team Red Hot - Team Soten - Team Pop Up - Team Spingere - Team Boost - Team Mouryou - Team Severe Beat
Kamen Riders: Takeshi Hongo - Keisuke Jin - Ryo Murasame - Takumi Inui - Momotaros - Tsukasa Kadoya - Shotaro Hidari - Haruto Soma - Shinnosuke Tomari - Takeru Tenkuji - Emu Hojo - Parado - Sento Kiryu - Sougo Tokiwa
Other Heroes: Daigo KiryuIcon-crosswiki.png - Ressha Sentai ToQgerIcon-crosswiki.png - Kikaider (REBOOT)

Locations: Zawame - Charmant - Yggdrasill Tower

Yggdrasill Corporation
Takatora Kureshima - Mitsuzane Kureshima - Ryoma Sengoku - Lock Dealer Sid - Yoko Minato - DJ Sagara - Amagi Kureshima
Remnant groups: Black Bodhi - Neo Baron

Zawame City Restoration Bureau

Femushinmu (Over Lord Inves): Rosyuo - Demushu - Redyue - Dyudyuonshu - Grinsha - Shinmugurun - Over Lord Queen
Lapis - Kougane
Other Over Lords: Lord Baron - Tyrant
Advanced Inves: Byakko Inves - Seiryu Inves - Hekija Inves - Shika Inves - Kamikiri Inves - Komori Inves (Mutant) - Inoshishi Inves - Lion Inves - Yagi Inves
Elementary Inves

Helheim (Forest) - Forbidden Fruit - Man of the Beginning - Woman of the Beginning - Femushinmu Planet - Planet of Helheim

Other Villains
Grasshopper Monster - Badan Empire - Pitcher Plant Monster - Megahex - Hakaider (REBOOT)
Current Swordsmen: Touma Kamiyama - Rintaro Shindo - Kento Fukamiya - Ryo Ogami - Ren Akamichi - Tetsuo Daishinji - Yuri - Reika Shindai - Ryoga Shindai
Previous Swordsmen: Daichi Kamijo - Kenshin Nagamine - Kyoichiro Shinsen - Toshikazu Kamikawa - Amane Kagami - Hayato Fukamiya
Movie-exclusive: Bacht
Seiken Swordriver - Jaken Caliburdriver - Haken Bladriver - Seiken Saikou Driver
Kaenken Rekka - Suiseiken Nagare - Raimeiken Ikazuchi - Dogouken Gekido - Fuusouken Hayate - Onjuuken Suzune - Ankokuken Kurayami - Mumeiken Kyomu - Kougouken Saikou - Eneiken Noroshi - Jikokuken Kaiji
Wonder Ride Book-related
Wonder Ride Books - Ride Book Hondana - Hissatsuholder - Sword of Logos Buckle - Sword of Logos Holder - Royal Sword of Logos Buckle
Kingexcalibur - Dragonic Booster - King Lion Booster
Brave Dragon - Lion Senki - Fighting Fairy - Lamp do Alangina - Tri Cerberus - 3 Little Pig Brothers - Jaaku Dragon - Jaou Dragon - Primitive Dragon
Diago Speedy - Ride Gatriker
Wonder World - Great Book - Avalon - Northern Base - Southern Base - Fantastic Bookstore Kamiyama
Touma Kamiyama's team: Mei Sudo - Yuri - Tetsuo Daishinji - Ryo Ogami
Others: Tassel - Luna - Sora Ogami
Northern Base: Sophia - First Master Logos - Mr. Daishinji
Southern Base: Master Logos - Reika Shindai - Ryoga Shindai
Storious - Legeiel - Zooous - Daichi Kamijo - Desast
Summoned Megid Monsters: Golem Megid - Ari Megid - Kirigirisu Megid - Hanzaki Megid - Piranha Megid - Medusa Megid - Ahiru Megid - Goblin Megid
Human Transformed Megid Monsters: Yeti Megid - Ousama Megid - Charybdis Megid - Neko Megid
Footsoldiers: Shimi
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