Final answer:
Galactus, Devourer of Worlds, is a fictional character in Marvel Comics who consumes the energy and life force of planets to sustain himself. He is a significant and iconic villain in the Marvel universe.
Step-by-step explanation:
Galactus, Devourer of Worlds, is a fictional character in the Marvel Comics universe.
He is a supervillain appearing primarily as an antagonist of the Fantastic Four. Galactus is a cosmic entity who consumes the energy and life force of planets to sustain himself. He is depicted as an immensely powerful being, often depicted as a humanoid in purple armor with a silver helmet.
Galactus was created by writer Stan Lee and artist Jack Kirby and first appeared in Fantastic Four #48 in 1966. He is considered one of the most significant and iconic villains in the Marvel universe. His role as the destroyer of worlds and his constant search for sustenance make him a formidable adversary to the heroes of the Marvel universe.