Fitzroy

Fitzroy is a mutant from the future of New York in 2055 AD, known as "the mutant traitor" because he works for Master Mold to keep his own neck safe.

Biography
Fitzroy time traveled to 1959 with Nimrod to kill Charles Xavier before he creates the X-Men, but when he finds Nimrod has orders to dispose of him after the mission, he helps stop the attempt on Xavier's life.