Source: i09.com

6. Devil Dinosaur

Whom? A Jack Kirby creation from the ’70s, Devil Dinosaur was a giant red dinosaur who palled around with a sub-human ape-beast named Moon Boy.

He would later team up with the much smarter (and better as a character) modern-day teenage girl who called herself Moon Girl. But at his inception, he was just a prehistoric dinosaur who fought things because they annoyed him.

Why He'll Never Appear: He’s a giant red dinosaur named Devil Dinosaur. I love him, but that is incredibly silly. Too silly. Call attention to the Guardians of the Galaxy movies all you want; they don't have a giant red T-rex stomping around. Even Rocket Raccoon is definable as a character. Devil is just an animal. Dude's comic book lasted nine issues. And that was back in the ’70s, when Nova had a 25-issue series.

Although I honestly would put down hard-earned money to see a movie featuring his devilish dinosaur goodness. Double that if it were his evil, robe-wearing, pipe-smoking clone from Nextwave.