Gorosaurus is a kaiju film monster which first appeared in Toho's 1967 film King Kong Escapes. It was an opponent of King Kong in the film, and it later had a prominent role in 1968's Destroy All Monsters.
Vote which fictional character would naturally fit in-universe with a big-named franchise! No time-travel, no interdimensional crap, no "Pooh's Adventures", they would just exist in-universe.
