History:

Rahne Sinclair was born in Scotland and was delivered by Dr. Moira MacTaggert, who is the daughter of the powerful Scots Lord Kinross and is the close friend and professional associate of Professor Charles Xavier, founder of the team of mutant X-Men (see Professor X, X-Men). An orphan, Sinclair was raised by the stern minister Reverend Craig, but she was befriended by MacTaggert, whose ward she became.

    Sinclair's mutant power, which enables her to transform herself into a wolf-like being, emerged at puberty. One night when Sinclair was fourteen, she fled in wolf form from a mob led by Reverend Craig, who believed her to be possessed by the devil. One member of the mob shot at Sinclair, inflicting a flesh wound. In wolf form Sinclair ran past MacTaggert, fell, and reverted to human form before her eyes. Recognizing Sinclair, MacTaggert took her under her protection, saving her from the mob.

    MacTaggert brought Sinclair to Professor Xavier in America. There Sinclair became one of the first members of Xavier's new team of young superhuman mutants, the New Mutants, whom he trained in the use of their mutant powers (see New Mutants). Sinclair has remained a member of the team ever since, and has come to regard her guardian, MacTaggert, as her surrogate mother.

    In Xavier's absence, Cable reorganized the group known as the New Mutants into the mutant strike force, X-Force. Sinclair stayed with the team for a while but left to become a member of the government sanctioned X-Factor, a team of superhuman mutants organized by the United States government to deal with mutant related combat and crime fighting missions inside and outside of the U.S. Sinclair left X-Factor after events which lead to the destruction of the team. Sinclair then returned to the only place she could really call home, Muir Island, and was reunited with Moira MacTaggert. Sinclair has since joined Excalibur, the superhuman champions who primarily operate within the United Kingdom, where she remains today.