With the exception of his fourth-grade teacher, he genocided his own race, the Czarnians.
This character attended a comic book convention looking for an issue of Superman #75. During 52, this character quested for the Emerald Eye of Ekron, which he used to kill the "Great Fishy One." This character frequents a diner staffed by the waitress Darlene, and he was barred from (*) Heaven and Hell for generally being a nuisance. With the exception of his fourth-grade teacher, he genocided his own race, the Czarnians. This character has an odd love of dolphins, and he's usually shown saying "frag," referring to himself as "the Main Man," and with red eyes and pale white skin. For 10 points, name this burly intergalactic biker and bounty hunter whose name comes from the Spanish for wolf.
This character attended a comic book convention looking for an issue of Superman #75.
Lobo (accept the Main Man before mention)