The reluctant leader of the X-Men who shoots concussive blasts from his eyes, Scott Summers has been fighting for the peaceful coexistence of mutants and humans most of his life. Cyclops has been deputy leader of the X-Men since his teen years and has seen the team go through a myriad of changes. Briefly, with the founding members of X-Men, Scott joined X-Factor, but later returned to the X-Men. Marrying the clone of his long-time love, Jean Grey, Madelyne Pryor, Scott later had a son, who would grow-up to become Cable. After the death of his first wife, Scott married Jean, but later began to have an affair with sex therapist and former villain, Emma Frost. After the death of Jean, Scott and Emma now lead the X-Men. A brilliant tactician, Scott eventually became a natural commander of all mutants left on the planet after M-Day, leading them through some of the hardest times in their lives. Since then, he slightly became a more radical leader, creating a X-Force assassins team, ending in tracking down the Avengers and killing his mentor Charles Xavier. He currently leads the Mutant Revolution.
Two of Cyclops' counterparts also exist on Earth-616: The Afro-American American Civil War hero Corporal Scott Summers, and the time-displaced young Cyclops.