From The TimeSplitters Wiki

Braces is the big muscle goon in Big Tony's gang and is stereotypically rather unintelligent. However he has two 10's in his stats and as such is a valuable bot to your team.

He is the one that breaks the news to Big Tony that Jake Fenton is back in the Chicago. Big Tony punches through a door and demands for Jake to be killed. Jake encounters Braces twice in Chicago but it is unkown if he killed him or not because Braces appears in the next game.