Mystique (Raven Darkhölme) is a fictional character associated with the Marvel Comics' franchise X-Men. Originally created by artist David Cockrum and writer Chris Claremont, she first appeared in Ms. Marvel #16.
Destiny (Irene Adler) is a Marvel Comics fictional character, known as an adversary of the X-Men. Created by writer Chris Claremont and artist/co-writer John Byrne, the character first appeared in Uncanny X-Men #141 (January 1981). She died in Uncanny X-Men #255 and was resurrected with a techno-organic virus during the 2009 Necrosha event.
Pied Piper (also known as Piper) is a reformed villain in the DC Universe. He is a former member of the Rogues. He first appeared in the pages of The Flash #106 (May 1959).