Yousuke Togawa is a man who was Marina Tsumura's boyfriend.
Like his girlfriend, he was also fired from his position at Windscale, 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.
- Height: 235 cm
- Weight: 270 kg
By using Magma Memory, he can imbuing himself with pyrokinetic abilities as the Magma Dopant