Kamoebas

Kamoebas (カメーバ Kamēba) is a giant mutated turtle kaiju who first appeared in the 1970 Toho film, Space Amoeba. The result of the Space Amoeba possessing a mata mata turtle, Kamoebas was used as part of the sinister alien's plan to take over the Earth. A group of humans on Sergio Island learned that the amoeba's weakness was the sonar given off by bats, and so unleashed a large swarm of bats from a cave, severing its control over Kamoebas and Ganimes, a giant rubble crab that the amoeba had also possessed. Kamoebas and Ganimes fought to the death, eventually falling into the crater of an active volcano, destroying all remaining traces of the Space Amoeba. In Godzilla: Tokyo S.O.S., set over 30 years later, the carcass of another Kamoebas washed up on the shores of Japan with large gash wounds on its neck. The Anti-Megalosaurus Force determined that Kamoebas was killed by a larger predator: Godzilla. While Kamoebas did not debut in the Godzilla series and his only appearance in a Godzilla film came as a carcass, he has been featured in non-film media such as manga, comics, and even some video games. Kamoebas also made an appearance in the 1970's tokusatsu television show Go! Godman as one of Godman's enemies. Most recently, Kamoebas was featured in GODZILLA: Monster Apocalypse, the official prequel novel to GODZILLA: Planet of the Monsters.