Debuted: "Captain Britain" #8 (1976)
Previous Movie or TV appearances: "X-Men" (animated), "Wolverine and the X-Men" (animated), "X-Men: The Last Stand"
Why: One of the most fascinating untapped characters in the "X-Men" universe, Psylocke (nee Betsy Braddock) has been depicted on the big-screen only once, as a minor villain in Brett Ratner's "X-Men: The Last Stand" (the character was played by actress Meiling Melencon). Nevertheless, she's far better known for playing on the side of the good guys, first joining the X-Men as a powerful English telepath outfitted with bionic eyes (a result of her kidnapping by the corpulent alien supervillain Mojo) and later as a butt-kicking martial arts babe (the result of a body-swap with a Japanese assassin known as Kwannon). This highly-complex but nevertheless intriguing back-story makes the character a natural fit for a big-screen origin story a la Wolverine, not to mention that her signature "weapon" - a focused burst of psychic energy depicted as a "psychic blade" jutting out from one of her hands - would make for a damn cool visual hook.

- Chris Eggertsen