M. Bison, usually refered to as simply "Bison" is the primary antagonist of the Street Fighter game series, and the leader of the criminal organization, Shadaloo. Bison is a cruel, merciless, and greedy individual, who only cares about money and power. His main goal is world domination, and he will sink to any level in order to obtain it. Unlike most characters in the series, Bison does not use any perticular matial art, instead rellying on his super natural ability, his Psyco power. And the end of the second game, Bison was killed by the demon Akuma, but he was revived through unknown means prior to the fourth game.