Spoilers for Tekken 7: Heihachi Mishima is dead. Death does not tend to mean a permanent end for most Tekken characters, but Heihachi was punched in the chest so hard his heart stopped and then his lifeless body was tossed into a river of magma. That’s a tough one to come back from, and in the lead up to Tekken 8, even series legend Katsuhiro Harada can hardly believe how dead Heihachi is.