A serious monster character, he's a colossal giant with long legs

A serious monster character, he's a colossal giant with long legs, who wears blue plumber clothes with a red blouse underneath, he has a red beret. He has yellow robotic parts on his body exuding radioactive green energy, his face is skeletal denified by radiation, he wears remnants of radioactive yellow suit., RPG Character Art Style, Full Body, Manga Art Style