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Official Site: Marvel

Mastermind (Jason Wyngarde) is a supervillain appearing in American comic book published by Marvel Comics, commonly as an adversary of the X-Men. The original Mastermind was a mutant with the psionic ability to generate complex telepathic illusions at will that cause his victims to see whatever he wishes them to see. He was a founding member of the first Brotherhood of Evil Mutants and later a probationary member of the Lords Cardinal of the Hellfire Club, where he played an important role in "The Dark Phoenix Saga".

After Wyngarde's death from the Legacy Virus, his three daughters appeared: two possessing his illusion-creating abilities, Mastermind (Martinique Jason) and Lady Mastermind (Regan Wyngarde), and the X-Man Pixie.

Created by writer Stan Lee and artist/co-writer Jack Kirby, he first appeared in The X-Men #4 (March 1964). He was given his "real name" of Jason Wyngarde by Chris Claremont and John Byrne.

The name and visual appearance of Jason Wyngarde as he appears in the Dark Phoenix Saga and later stories was originally based by artist John Byrne on that of British actor Peter Wyngarde, best known for playing Jason King, and who also played the leader of the Hellfire Club in an episode of The Avengers.

Martinique Jason has not been a contender in any CBUB matches.