Calley is an old friend of the X-Man Gambit. He was one of the scientists kidnapped by Magneto to help him build Asteroid M, a safe haven for mutants that would orbit the Earth. Calley was released by Magneto though decided to stay on Asteroid M of his own free will as did many of the other scientists. Later, Fabian Cortez ordered Calley to fire the asteroid's nuclear defensive missiles at the Earth. He refused and tried to stop Cortez. Later, Cortez was about to kill Calley when he was stopped by Voght. Upon the destruction of Asteroid M, Calley returned to Earth.
Powers and Abilities
Byron Calley of the Prime Reality is not an Acolyte, but a member of the Brotherhood of Evil Mutants.