Destoroyah

Destoroyah (デストロイア, Desutoroia?), alternatively Destroyah, or Destroyer, is a fictional Japanese monster from the Godzilla Franchise appearing only in the 1995 film Godzilla vs. Destoroyah and in some of the Godzilla video games. He originated as a colony of Precambrian crustaceans that had been awakened and mutated when the Oxygen Destroyer was detonated to kill Godzilla in 1954 (Godzilla). Hedorah may be the inspiration for Destoroyah, since both go through four stages in their life cycles or their gradual metamorphosis.

A possible reason that the name "Destroyer" isn't commonly used in various markets is because the word itself could not be trademarked. It is referred to as "Destroyer" in the dubbed version of the film, while "Destoroyah" is Toho's official name for the character.