Kaiser, real name Max Doyle, is a playable character in Contra: Rogue Corps. He is a soldier from the Alien Wars rebuilt after receiving massive injuries. He now has a cybernetic arm that transforms into a drill.
- "Leader of the Rogue Corps.
- He is an elite soldier and the former leader of the Contra Force, but has become an outlaw after a certain incident.
- He loves his fake arm that can transform into a drill more than anything else.
- He built his drilling arm himself, and poured to match time into thinking about funny ways to use it to entertain people in parties.
- He loves throwing bad puns that exasperate his teammates, but somehow he is still appreciated overall.
- He likes cute animals and children.
— From the official Contra: Rogue Corps website.