Galactus.

About Galactus

Galactus is a fictional character appearing in American comic books published by Marvel Comics. Formerly a mortal man, he is a cosmic entity who consumes planets to sustain his life force, and serves a functional role in the upkeep of the primary Marvel continuity. He was created by Stan Lee and Jack Kirby and first appeared in Fantastic Four #48. Lee and Kirby wanted to introduce a character that broke from the archetype of the standard villain. In the character's first appearance, Galactus was depicted as a god-like figure that fed by draining living planets of their energy, and operated without regard to the morality or judgments of mortal beings.