This article is about a/an rider in Kamen Rider Decade.
For the original Kamen Rider Agito, see Shouichi Tsugami.
For other users of Kamen Rider G3, see Kamen Rider G3.
For the original Kamen Rider Gills, see Ryo Ashihara.

Shouichi Ashikawa (芦河 ショウイチ Ashikawa Shōichi) is the resident Kamen Rider of the World of Agito in Kamen Rider Decade.


He is a young man who supports the police, originally the user of the G3 system that was designed to fight the Gurongi. However, he mysteriously metamorphed into Kamen Rider Exceed Gills, a larval form of Agito. Hunted by the Lords for his incompete power, Shouichi left G3 unit without explaining his reasons, the isolation he placed on himself making him antisocial. However, the real reason is actually because he doesn't want his presence endangering Toko. The pain of the changes inside his body worsen whenever he senses the presence of nearby Lords attacking humans.

Possessing a year-old letter for him from Toko, Tsukasa and Natsumi arrive to his long dilapidated home to give him his letter, only for them to be followed by a Formica Pedes. Amazed at Decade's power, he rips the letter Tsukasa gives him and tells him to stay away from him as they are nearly killed by an attack from the Buffalo Lord Taurus Ballista. After reading the letter, Tsukasa finds Shouichi and offers to protect him from the Lords. This however, enrages Shouichi as he becomes Gills with Tsukasa restraining him before he runs off to where a pair of Pedes are fighting Yusuke and Diend.

After killing the monsters, Gills is targeted by Diend until Decade arrives to protect him. However, Gills takes the Decade Belt as he runs off when Ballista himself appears with his Ant Lord minions. Though he refuses Tsukasa's aid, it takes Yusuke's interference to help Shouichi realize Toko knew why he ran off and loves him enough to protect him by creating the G3-X Suit. This revelation allows Shouichi to complete his evolution into Agito, supporting Decade and G3-X in defeating the Unknown. Soon after, Shouichi returns to the police force to support them as Agito.

When Tsukasa goes into the World of the Rider War, the only "Rider Worlds" remaining are of Blade's, Kiva's and Hibiki's. It is revealed that Agito's world has vanished like the other worlds.

ARAgito MovieWar

Shouichi as he appears in Movie War 2010.

During Movie War 2010 events, he is revived after Decade's death and helps revive Decade. He later appears to help in the final battle with Super Shocker, transforming into Shining Form as a result of Decade's K-Touch and later into his Agito Tornador form with the All Rider Final Form Ride Card to fight the Super Crisis Fortress.

Later appearances

Movie War 2010 currently remains the last appearance of Shouichi Ashikawa. The Agito that appears in OOO, Den-O, All Riders: Let's Go Kamen Riders and Kamen Rider × Super Sentai: Super Hero Taisen is the original Agito, Shouichi Tsugami.

Rider Powers

Shouichi also possesses some of the same equipment used within the original Agito, such as the Alter Ring (オルタリング Oruta Ringu) transformation belt, which holds the "Seed of Agito" that serves as the source of his power. Kamen Rider Decade's Final Form Ride allows him as Agito to change into Agito Tornador (アギトトルネイダー Agito Toruneidā), a hoverboard similar to the Machine Tornador in Slider Mode.

Before he assumed the title Agito, he previously assumed the title Kamen Rider Exceed Gills (on his first appearance) and Kamen Rider G3 (as shown in Kamen Rider Decade episode 13)

G3 2

Kamen Rider G3

Shouichi Ashikawa in G3 Suit

Shouichi in G3 Suit.

Statistics & Performance Data:

  • Head height: 192 centimeters
  • Base weight: 150 kilograms
  • Punching power: 1t
  • Kicking power: 3t
  • Highest jump: 10m (broad)
  • Top speed: 100m/10s
  • Vision: 5 km approx.
  • Hearing: 5 km approx.
  • Defense Rating: 8

In light of the threat of Unidentified Lifeforms (the Gurongi), Tokyo's Metropolitan Police Department Unidentified Lifeforms (M・P・D/S・A・U・L) received funding from the city government to develop a powered, reinforced exo-suit. It's unknown if this was based off Kuuga like the real counterpart, but unlike it's counterpart, this was completed during the Gurongi outbreak, and thus it was used to fight the threat. Its most potent armament is the GG-Launcher (GG-02 Salamander).

Exceed Gills

Exceed Gills

  • Head height: 200 centimeters (6ft 5in)
  • Base weight: 100 kilograms (220.4lbs)

Ability perimeters

  • Punching power: 15t
  • Kicking power: 30t
  • Maximum jump height: 65m (213ft 2in) (broad)
  • Maximum running speed: 100m/4.2s (328ft/5sec)
  • Vision: 20 km approx. (12.4 miles)
  • Hearing: 20 km approx. (12.4 miles)
  • Defense Rating: 5

Somehow he mysteriously meta-morphed into Kamen Rider Gills, a larval form of Agito. In this form, he is able to perform the finisher Exceed Heel Claw by restricting his enemy with the Gills Stingers, Exceed Gills performs the Gills Heel Claw attack, tearing the enemy in two with the devastating force of his overhead heel drop. Possesses approx. 45 tons of force.

In Kamen Rider Decade series, he is only shown that he transformed into Exceed Gills instead of normal Gills on his first appearance. This might be explained because the original Gills suit had sustained severe water damage.

Ground Form
Kamen Rider Agito (World of Agito)

Ground Form


Ground Form Power Up (Crest Horns Opens)

  • Punching Power: 7 t. (15 t. at full power)
  • Kicking Power: 15 t.
  • Highest Jump: 30 m.
  • Top Speed: 100 m. per 5 seconds
  • Senses: x10
  • Defense: 6/10

Ground Form (グランドフォー Gurando Fōmu) is the first of Agito's numerous forms. This form harnesses the power of the earth, turning Ashikawa's entire body into a lethal weapon, with bone-crushing blows and crippling locks. Of all the forms, the golden Ground Form is the most balanced, with power, speed and strength working in harmony to make the most of its capabilities.

At its peak, the crest horns upon his head opens, pushing all of Agito's capabilities to their fullest, emanating beneath his feet, into his legs to execute his Rider Kick (ライダーキック Raidā Kikku), a jump kick of incredible raw power and force; with a force of 30-tons, or with the Machine Tornador, the Rider Brake (ライダーブレイク Raidā Bureiku), jumping off the Machine Tornador at full speed, and Dragon Breath, which involves ramming the side of the Machine Tornador into the enemy. Ground Form has also been shown to be able to use a Rider Punch (ライダーパンチ Raidā Panchi).

Shining Form

Shining Form

  • Punching Power: 25 t.
  • Kicking Power: 45 t.
  • Highest Jump: 75 m.
  • Top Speed: 100 m. per 4 seconds
  • Senses: x45
  • Defence: 10/10

Shining Form (シャイニングフォー Shainingu Fōmu), also known as the "evolution of infinite possibilities," was awakened by Tsukasa's K-Touch. Although the power of his fists remain unchanged, all other attributes being pushed to their peak, making Shining Form Agito's greatest form.

In Shining Form, Agito wields the Shining Caliber in Twin Mode (ツインモード Tsuin Mōdo) as paired blades for his high-speed "Shining Clash" (シャイニングクラッシュ Shainingu Kurasshu) attack. His final attack is Shining Rider Kick (シャイニングライダーキック Shainingu Raidā Kikku), concentrating the Agito Power before him to accelerate to supersonic speeds as he attacks with his strongest flying kick, piercing his enemy with extreme force. In Movie War 2010, it was shown that Agito Shining can also perform the Shining Rider Punch (シャイニングラライダーパンチ Shainingu Raidā Panchi) attack.

In Movie War 2010, Ashikawa was able to transform into Shining Form as a result of Decade's K-Touch.

Agito Tornador
"Final Form Ride: A A A Agito!"
―Transformation announcement[src]

Agito Tornador

In Kamen Rider Decade, Decade used the Final Form Ride that allow transforms Agito Ground Form into the Agito Tornador (アギトトルネイダー Agito Toruneidā), a hover-board similar to the Machine Tornador in Slider Mode.

On the Agito Tornador, Decade executes Final AttackRide slash attack with the Ride Booker in Sword Mode called the Decade Tornado (ディケイドトルネード Dikeido Torunēdo), which is similar to Agito Flame Form's Saber Brake Slash.

Behind the scenes


Shouichi Ashikawa is portrayed by So Yamanaka (山中 聡 Yamanaka Sō), previously Kamen Rider Kirameki in Kamen Rider Hibiki & The Seven Senki and who would later portray Yosuke SakuradaIcon-crosswiki in Tokumei Sentai Go-BustersIcon-crosswiki. As Kamen Rider G3, Kamen Rider Exceed Gills, and Kamen Rider Agito, his suit actor is Jun Watanabe (渡辺 淳 Watanabe Jun).


  • Shouichi Ashikawa (芦河 ショウイチ Ashikawa Shōichi) is a composite of the three main characters in the Kamen Rider Agito series, with his name being a portmanteau of all three characters' names: Shouichi Tsugami (津上 翔一 Tsugami Shōichi) (Agito), Ryō Ashihara (葦原 涼 Ashihara Ryō) (Gills) and Makoto Hikawa (氷川誠 Hikawa Makoto) (G3).
    • This is played further as he donned the G3 suit and assumed the form of Exceed Gills before becoming Agito.