Galactus is Galan. He is a supervillain.He was an alien scientist that was caught in the same cosmic explosion that gave the Fantastic Four their powers. Thus, he became Galactus, the Devourer of Worlds.Galactus eats planets to live. He does so by inserting special suction pumps deep inside the planet. Then, Galactus sucks out the planet's core, leaving the planet as an empty shell.He has the Power Cosmic. Therefore, he has vast reality-altering powers, and he is indestructable.He is an enemy of the Fantastic Four.