
Jack-2 (introduced in Tekken 2) is a direct upgrade of the Jack model, also created by the Mishima Zaibatsu. In-game, the player is one of these machines. Jack (introduced in Tekken) is the original model, created by Heihachi's Mishima Zaibatsu in order to counter a coup from Kazuya Mishima in the King of Iron Fist Tournament. The various Jack models were originally created by the Mishima Zaibatsu and G Corporation for different purposes: 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.
Kenichiro Matsuda ( Street Fighter X Tekken) (Jack-X). Akio Ōtsuka ( Tekken: The Motion Picture) (Jack-2). Jordan Byrne ( Street Fighter X Tekken) (Jack-X). Mark O'Brien ( Tekken: The Motion Picture) (Jack-2).