Granitor question

[serpentnight]

Does anyone know how Granitor got his name? He wasn't named in the one episode he appeared in and didn't have an action figure in the Playmates line. The only reference I found of his name in the 90s was in the NES manual for -The Arcade Game and I don't think I heard it again until the character was reimagined for the IDW and Nickelodeon series'. So how exactly did he become known as Granitor; who gets the credit?