The twin sister of Quicksilver, who can harness magic and engage in hypnosis and telekinesis. Olsen said, "The reason she's so special is because she has such a vast amount of knowledge that she's unable to learn how to control it. No one taught her how to control it properly. So it gets the best of her. It's not that she's mentally insane, it's just that she's just overly stimulated. And she can connect to this world and parallel worlds at the same time, and parallel times." Describing her character's mind control powers, Olsen said, "I am able to go into someone's head and they'd never see. I can feel and see what they feel and see. So it's not just me manipulating them. What I love about her is that, in so many superhero films, emotions are kind of negated a bit, but for her everything that someone else could feel—like their weakest moments—she physically goes through that same experience with them, which is pretty cool." Olsen drew on her relationship with her older brother and her sisters to prepare for the role, as well as looking to the comics for inspiration. Olsen revealed that Whedon was inspired by dancers as a way to visually represent how the character moves. As such, Olsen mostly trained with a dancer in lieu of traditional stunt training. Olsen is signed for this film and another.

SCULPTED BY STUDIOGENESIS ARTIST ERWIN DELA CRUZ AND PAINTED BY JR MASANGKAY!!!!!