In Tiger Mask II (タイガーマスク二世, Taigā Masuku Ni-sei),a new opponent called "Outer Space Mask" bullies his way into the ring without representing any wrestling federation. Tatsuo Aku, once an orphan child from the "house of the children", was a fan of Naoto, who has died. He would put on his old hero's mask to become the new Tiger Mask.