Fatal Fury/Billy

Billy Kane (ビリー・カーン) was the righthand man of Geese Howard, a crime lord in the fictitious American city of Southtown. Geese would hold The King of Fighters tournament every year with Billy as his champion. Billy was the undefeated champion of the tournament, until he was defeated by Terry Bogard in Fatal Fury, who moved on to defeat Geese. Billy came to Geese's aid at the end of the fight and took him to the hospital. Billy swore revenge against "The Lone Wolves" Terry, Andy Bogard and Joe Higashi.

Geese's final plan was to use The Scrolls of Immortality to become a god in Fatal Fury 3: Road to the Final Victory. The Lone Wolves and their friends tried to stop Geese and Billy was there to stop them. He had a showdown with Joe Higashi, and while he did win, it turned out Joe was merely a distraction. While they were fighting, The Bogard Brothers fought Geese for the last time and killed him.