Come to think of it, the Tekken team bringing back Heihachi from the dead (for the 3rd, 4th time?) isn't that shocking given that they brought back plenty of characters whose deaths got retconned from Tekken 2-3 for Tekken 5, since T4 didn't do so well so they ended up going back to the roots by making gameplay be more similar to T3 and bringing back a good amount of old characters.