Kamacuras is a kaiju film monster which first appeared in Toho's 1967 film Son of Godzilla. The name alludes to "kamakiri", the Japanese word for mantis. In its first appearance, the creature was called Gimantis in the U.S. version.
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.