Heihachi Mishima, the Resurrected King of Iron Fist, returns in TEKKEN 8 on October 4, 2024 (October 3 in PDT)! Heihachi will be available in early access on October 1st for Playable Character Year 1 Pass holders. Heihachi Mishima, the Resurrected King of Iron Fist, returns in TEKKEN 8 on October 4, 2024 (October 3 in PDT)! Heihachi will be available in early access on October 1st for Playable Character Year 1 Pass holders.