Subsequent Tekken games feature an upgraded model with a slightly different name, with the exception of Tekken 4, in which he makes no appearance. The character is an android, first introduced under the name 'Jack', in the original video game Tekken. Jack (Japanese: ジャック, Hepburn: Jakku) refers to multiple fictional characters in the game Tekken.

Mark O'Brien ( Tekken: The Motion Picture) (Jack-2).