Billy is the younger brother to Jimmy.
He uses the fighting style of Sousetsuken (a fighting style he created which
combines Shaolin Kenpo, Tai Chi, Karate, Judo, and Aikido). Along with his
brother, he runs a fighting dojo, where they work together to perfect the best
martial arts techniques. This comes to an end when they visit their hometown,
and make the decision to end the violence in the city.
In the Rage of the Dragons storyline, Billy does not speak to his brother because of a past event involving
Jimmy's girlfriend. Billy always had a crush on her and one day, she
was captured by a gang in the city and murdered. This gang had some history
with Billy, and Jimmy knew this. Jimmy blamed him for her death and
they haven't spoken since. Billy
trains in Ryu Zui Ken which he learned from his master, Le-song. He also trains with Lynn,
Le-song's grand daughter. He enjoys street racing and makes his living
that way. Billy's first
appearance was in the 1987 arcade game by Technos, Double Dragon.