Thread:RedSilver01/@comment-26216332-20160808071220/@comment-29417418-20160813180444

Mystique is a shapeshifter, and is better at blending in than Chrsyalis, because she learns everything to know about the one she is impersonating. That and she rarely blows her cover, because when she is impersonating someone, she has to use their personality to not get caught. Only people who can read minds and have a great sneeze of smell can detect her, but she trained herself to not get detected by even that. In X-Men Evolution, neither Xavier or Logan sensed her.