The memo to Jack Kirby from Stan Lee is rumored to have been "Make them fight God." That's what I always liked about the Kirby FF. They weren't as powerful as other teams, but they had the pseudo-scientific brains to defeat the most metaphysically powerful villains. Would the Avengers have figured out how to use the ultimate nullifier?

Not a villain in the conventional sense. A powerful, almost godlike being whose quest for survival, decimated planets. Had no more concern for people than we would have for insects.

he is definately powerful but a little extreme

He was more of a force of nature than a villian. Even though he eats planets like chocolate.