Jack-4

From Tekkenpedia

Jack-4
A Jack-4 robot.
Origin	G Corporation
Age	Unknown (most likely the same for all of them)
Occupation	Kamikaze assassin (all)
Appearances	Tekken 5: Dark Resurrection (opening)

Jack-4 is a non-playable character in the Tekken series of fighting games. This version was mass-produced and sent to attack Heihachi Mishima and Kazuya Mishima at Hon-Maru. Apparently, this model has a self-destruct feature, as shown in the Tekken 5 opening movie, where a Jack-4's head opens up to reveal an internal time bomb. The massive explosion wasn't enough to kill Heihachi, but the blast did however throw him several miles as well as free Jinpachi Mishima from his imprisonment.

There is no Jack model participating in The King of Iron Fist Tournament 4, and Jack-4's successor, Jack-5, takes his place in The King of Iron Fist Tournament 5.

Heihachi Mishima and the Jack-4s.

[edit] Character Relationships

Developed by Jane.
Attacked Kazuya Mishima and Heihachi Mishima at Hon-Maru.
Attacked Raven, possibly in an attempt to discard the only eye witness.
The explosion caused by the Jack-4s freed and resurrected Jinpachi Mishima.
The explosion caused by the Jack-4s was thought to have killed Heihachi Mishima, but Heihachi managed to survive.