餓狼伝説スペシャル
Billy is introduced in "Fatal Fury" as the righthand man of Geese Howard, a crime lord in the fictitious American city of Southtown. Geese holds "The King of Fighters" tournament every year with Billy as his champion. Billy was the undefeated champion of the tournament, until he is defeated by Terry Bogard, who moved on to later defeat Geese. He also appears in "Fatal Fury Special" as a playable character for the first time. After Geese recovers, Billy appears in "Real Bout Fatal Fury" to assist him in the conquer of Southtown. However, Geese is ultimately killed by Terry, causing Billy to leave Southtown. He later appears in the two following games from the series "Real Bout Fatal Fury Special" and ' which do not contain a storyline. In the PlayStation version from "Real Bout Fatal Fury Special", Billy is brainwashed by his half-brother White in order to aid him in the conquer from Southtown. He then appears as a sub-boss character in the arcade mode, but once he is defeated, he returns to normal. A 3D fighting game version of the series, ' was produced as well, which retells the plot of the first game.