Wolfsbane

Wolfsbane (Rahne Sinclair) is a superhero appearing in American comic books published by Marvel Comics. The character is commonly associated with the X-Men. A Scottish mutant, Wolfsbane can transform into a wolf or a transitional state somewhere between human and wolf, similar to a werewolf. She honed her powers to shift between human and wolf characteristics but must keep her feral instincts at bay when she does. She was initially a member of the X-Men's original junior team, The New Mutants. Later on, she joined the Pentagon-sponsored X-Factor and was also associated with the British superhero team Excalibur…Wikipedia