Yousuke Togawa (portrayed by YOH) is the main antagonist in the first episode of 2009 TV series called Kamen Rider W. He uses the Magma Memory to turn into the Magma Dopant and is also Marina Tsumura's boyfriend.
Kamen Rider W
Like his girlfriend, he was also fired from his position at Windscale (ウインドスケール Uindosukēru), buys the Magma Memory with his girlfriend to exact their revenge for both being fired. However, while exacting his revenge against Windscale, Yousuke is consumed by the Gaia Memory's power and goes on a rampage. Shotaro finds Yousuke at the fifth Windscale building and defeats him as Kamen Rider Double CycloneJoker, executing the Joker Extreme Maximum Drive to destroy the Magma Memory. Before Yousuke can be handed over to the police, he is abducted and murdered by the T-Rex Dopant.
Kamen Rider Wizard
The Magma Dopant was one of the many Dopants that were revived as part of the Akumaizer's Monster Army.