Heihachi Mishima (Kuma)

Tekken Tag Tournament 2
A woman is seen working on a computer and later takes out a test tube with a purple liquid on it. Heihachi, now old again takes a drink from a container, becoming young once again. The woman now gives Heihachi the test tube, with Heihachi shouting that he will have regained his old form once again, and drinks the purple liquid from the test tube. Later his canines become sharper and his muscles become larger. Later it reveals that Heihachi has turned into a bear.