Galactus is everyone’s favorite: a being of nigh-on infinite power who wandered around the galaxy in a warship the size of a solar system eating planets. The last survivor of the previous universe, Galan of Taa now–and I’m not shitting you–eats planets. He pops in, unannounced, and starts yelling, “GALACTUS HUNGERS!” and tries to nomnomnom until the Fantastic Four show up and beat his ass again.
Also, he has a ‘G’ on his chest. For ‘Galactus.’