Gen was good friends with Chun-Li's father, who was murdered by M. Bison. The stern old man trained the beautiful detective for a sort time in her youth and still watches over her from afar. Through his body is weak, he is constantly seeking out opponents who can stand up to his assassination abilities and will stop at nothing to ensure his best friend's daughter remains safe.
Gen's combat style incorporates a wide variety of stances. He targets his opponent's vitals, causing great damage with precise movements.