Mystique is a member of a subspecies of humanity known as mutants, who are born with superhuman abilities. Mystique is a shapeshifter who can mimic the appearance and voice of any person with exquisite precision, and her natural appearance includes blue skin and yellow eyes. She is typically portrayed as a foe of the X-Men.
Throughout most of her history, Mystique has been a supervillain, founding her own Brotherhood of Mutants and assassinating several important people involved in mutant affairs. She has commented that she is over 100 years old. Mystique is the mother of the villain Graydon Creed, the X-Men hero Nightcrawler, and adoptive mother of the heroine Rogue. She is forced to abandon Nightcrawler, but raises Rogue for a number of years, and the two women have mixed feelings towards one another