Uu (ウー Ū). also Uuey-chan nicknamed by Yusuke Onodera, is the Dai-Shocker Combatman who wanted to become a Kamen Rider. However, he was brain-washed into the Shocker Kaijin. Fortunately, he was saved by Kamen Rider Kuuga, Yusuke Onodera, before he became a Riotrooper.