Read more about Phantazia at: Wikipedia

Official Site: Marvel

Phantazia (Eileen Harsaw) is a fictional mutant supervillain appearing in American comic book published by Marvel Comics. The character first appeared in X-Force #6 (1992).

Phantazia was recruited by Toad into his lineup of the Brotherhood of Mutants. She was one of the more powerful members of the group, possessing a mutant ability that allowed her to manipulate and disrupt not only the electronic systems and weaponry of her opponents, but their physical senses and superhuman powers as well. Her first mission with the Brotherhood led her to battle the mutant strike force called X-Force. There, she easily located the team's hidden bunker, shut off Cable's weaponry, and disrupted Cannonball's blast field, allowing Sauron to stab him in the chest.

After Thornn's defeat, Phantazia fled, leaving Masque to be killed by Shatterstar's sword. Other missions set the Brotherhood up against X-Factor, Darkhawk, Spider-Man, and Sleepwalker. Eventually, Phantazia was invited to Avalon, a mutant sanctuary, by Exodus. She rejected the offer and stayed with the Brotherhood. Pyro's sickness was getting to him, so they stayed with the mutant Empyrean, who could ward off Pyro's pain. The X-Men eventually found out what was going on and during the battle, Phantazia was defeated by a strike from Psylocke's psychic blade. After the skirmish, Phantazia departed the island with her teammates. Though the Brotherhood would make several appearances after this, she was not seen among their roster.

Phantazia was next seen in the altered reality of the 2005 "House of M" storyline. After the timeline was restored, she was confirmed as one of the many mutants who lost their powers on M-Day. She is held in S.H.I.E.L.D.'s psychological ward, apparently having been reduced to a partial catatonic state by the trauma of the reality shift. S.H.I.E.L.D. Director Maria Hill states in a conversation with Iron Man (Tony Stark) that Eileen has been muttering the words "House of M" repeatedly in her cell for some time after losing her powers.

Phantazia has not been a contender in any CBUB matches.