Mojo is one of the "Spineless Ones," an alien race that is immobile without advanced technology. He is a slaver who rules the "Mojoverse," a dimension where all beings are addicted to his gladiator-like television programs. The character is an absurdist parody of network executives.

cybernetic fictional species in the Marvel Comics universe who have come in conflict with the X-Men and related groups on several occasions. They form a hive mind, linking each member by a telepathy-like system.

A mysterious cyborg, Cable became the leader of the New Mutants, a junior X-Men team. After he developed the team into the harder-edged X-Force, Cable became one of the most popular superheroes of the 1990s and graduated to his own series in 1993.

Nimrod is a robotic supervillain, an enemy of Marvel Comics’ X-Men. Created by writer Chris Claremont and artist John Romita, Jr., he first appeared in Uncanny X-Men #191 (March 1985).

Howard the Duck is a comic book fictional character created by Steve Gerber for Marvel Comics and featured in several comic book series of the same name about the misadventures of an ill-tempered humanoid duck trapped in a human dominated world. Howard's adventures are generally parodies of science fiction and fantasy, written in a tongue-in-cheek style and combined with a degree of metafictional awareness of the limitations of the medium, often very experimental for a non-underground comic.

Franklin Richards is a fictional character in Marvel Comics' universe. Born in Fantastic Four Annual #6 (November 1968), Franklin is the young son of Mister Fantastic and the Invisible Woman of the Fantastic Four and the older brother of Valeria Richards. He is a mutant with such vast reality-manipulating powers that, for most of the 1990s, he was, along with Nate Grey, considered to be one of the two most powerful mutants ever born.

Jean Grey, originally codenamed Marvel Girl and later Phoenix, is a Marvel Comics superhero best known as a member of the X-Men. Created by writer Stan Lee and artist/co-writer Jack Kirby, she first appeared in X-Men #1 (September 1963).