They recruited Mimic, though, who had regained his memories and powers following a lab explosion at Metro College.

He joined the group despite the Puppet Master using him as his pawn to destroy the X-Men.

Factor Three struck again when the Professor attempted to cure his step-brother of being the Juggernaut.

The resulting experiment of both science and sorcery ended with the Juggernaut's revival and the Professor on the brink of death.

Xavier convinced Duncan to allow him to enroll young mutants in his private school and train them to battle evil mutants.

After training extensively in the school's Danger Room, the students were sent on field missions to protect the world from dangerous mutants who used their powers against humanity.

Factor Three mentally contacted the Juggernaut and tried to get him to join their group.

However, the robots revolted against their master, capturing Trask and the Professor and taking them to their new robotic leader, Master Mold.Turning his father's estate into Professor Xavier's School for Gifted Youngsters, Charles's earliest student was young Jean Grey, only twelve years old when her mental powers manifested.After years of preparation, Charles decided that it was time to recruit the young mutants whom he had been keeping track of as anti-mutant hysteria hit its peak.With reports about a young mutant accidentally endangering and then saving a crowd of people with an optic blast, Charles traveled to Washington D.C., seeking out FBI agent Fred Duncan, assigned to investigate reports of mutants.