Devil Dinosaur is a Marvel Comics character who resembles a red Tyrannosaurus Rex. He first appeared in Devil Dinosaur #1 (April 1978). Devil Dinosaur and his inseparable ape-like friend, Moon-Boy, are natives of "Dinosaur World", a version of Earth in a parallel universe where dinosaurs co-exist with tribes of primitive humanoid beings.
Devil Dinosaur #1-9
Devil Dinosaur Spring Fling Special
Marvel Monsters – Devil Dinosaur