Mystique (Marvel)

Little was known about Mystique's past due to the fact that she could eliminate the outward signs



of aging with her shapeshifing; it was not known exactly how old she was. She apparently learned to use her powers at a very early age which made her family fear her, for there is no evidence known to the public or the government that Raven Darkholme ever looked like anything but a normal human being.

According to Mystique herself her powers manifested when she was twelve years old and she had to fight just to survive.