Rogue

Real Name: Unknown
History: A runaway who enrolled in Xavier's school. She dates Iceman and is very close with Wolverine. She was involved in the attack at Alkali Lake which helped her become a full-fledged member of the X-Men.
Powers: Her powers are lethal in that she absorbs the life force of whomever she touches. She can borrow a mutant's abilities by touching them.
Courtesy of www.x-menthelaststand.com