Yusuke Onodera

''This article refers to Kamen Rider Kuuga in Kuuga's world and appears as a character for the show, Kamen Rider Decade. For the Original Kamen Rider Kuuga see Yuusuke Godai''

Yuusuke Onodera (小野寺 ユウスケ) is Kamen Rider Kuuga in Kamen Rider Decade, basically a new installment of the character- an alternate version especially for the Decade series. He has a very self-confident and gullible child-like personality, a stark contrast to the original incarnation of Kuuga, Yuusuke Godai.

Yuusuke supports the police in fighting the Grongi and has feelings for Detective Ai Yashiro, as he fights to see her smile. When Yuusuke first discovered the Arcle Belt, he was warned of Decade's existence as the "devil" by Narutaki.

Yuusuke rarely engages in battle while journeying with Tsukasa. He does, however, act as a inspirational figure to the other Riders, as can be seen with his aiding of Wataru, as well as his actions in the other Riders' worlds.

Fictional character biography
After killing the Grongi Me-Gyarido-Gi and Ra-Dorudo-Gu, Yuusuke answers Ai's call about another Grongi being spotted. After witnessing Decade defeat another Grongi, Ai and Yuusuke meet Tsukasa, who offers them his help as a policeman. Although Yuusuke seems to be annoyed by this, Tsukasa demonstrates his intellect and baits out two Grongi. Yuusuke recognizes Tsukasa transforming into Decade, the man who will defeat all the riders, and attacks him, but their battle is interrupted by Kick Hopper and Punch Hopper appearing due to a dimensional rift.

After the battle, Tsukasa goes off to a fight a revived N-Gamio-Zeda who is terrorizing the city by converting humans into Grongi using his miasma. Yuusuke saves Ai from the miasma, but is afraid to fight because she is dying. Her words are able to convince him otherwise, and Yuusuke, along with Tsukasa, defeats Gamio. However, upon his return, Yuusuke finds that Ai has died. Yuusuke promises to go on fighting, in order to protect everyone else's smile.

But after visiting Ai's tombstone to pay his respects, Yuusuke meets Kivala who brings him to Castle Doran in Kiva's World, where Yuusuke offers his aid to the Fangire King Wataru before joining Tsukasa's group as a resident of Hikari Photo Studio.

However during the Rider War, though his world is destroyed, Yusuke still exists due to his traveling of the Nine Worlds. Even though he is destroyed by Decade in The Last Story, he and his world are restored, allowing him to aid in reviving Decade and defeating the newly formed Super Shocker once and for all.

Rider Powers
Just like the original Kamen Rider Kuuga, Kuuga can change into various forms into which he gains different powers and specialties. The forms Yuusuke Onodera has transformed into are Mighty Form (マイティフォーム, Maiti Fōmu?), Dragon Form (ドラゴンフォーム, Doragon Fōmu?), Pegasus Form (ペガサスフォーム, Pegasasu Fōmu?), Titan Form (タイタンフォーム, Taitan Fōmu?), and Growing Form (グローイングフォーム, Gurōingu Fōmu?) when defeated.

In Natsumi's dream, showing the events to come in the Rider War, Kuuga assumes Ultimate Form (アルティメットフォーム, Arutimetto Fōmu?) when he fights Decade one-on-one. However, this form is black-eyed instead of red-eyed, revealed to be the result of Yuusuke losing control over his attacks when infused with Demon Imperial Powers (魔皇力, Maōryoku?) by Kivala's bite.

However, outside of his home A.R. World and the Rider War dream, Yuusuke has mostly used Mighty Form, transforming once into Titan Form while in the World of Amazon. In the World of Agito, Yuusuke dons the Kamen Rider G3-X (仮面ライダーG3-X, Kamen Raidā Jī Surī Ekkusu?) suit for a while. During the visit to the world of Den-O, Yuusuke was possessed by Momotaros, who uses him as a body to transform into Kamen Rider Den-O Sword Form.

Equipment
Yuusuke possesses some of the same equipment used within the original Kuuga, such as the Arcle (アークル, Ākuru?) transformation belt, and a stone embedded in the belt called Amadam (アマダム, Amadamu?) that serves as the source of his power and is able to extend a person's lifespan. He also possesses the TryChaser 2000 (トライチェイサー2000, Torai Cheisā Nisen?), a new model of police motorcycle designed to be faster and more powerful than the average bike.

Trivia

 * Yuusuke's surname Onodera (小野寺) is a reference to Kamen Rider Series creator Shotaro Ishinomori who's original family name is the same as Yuusuke.