Robert Drake (Earth-21399)

Early Life
Bobby Drake lived a normal life up until his junior year of high school, when a group of notoriously homophobic bullies led by one Rocky Beasely tried to jump Bobby and his then-boyfriend, Judah Miller, in an alley. In the ensuing commotion, Bobby's mutant powers manifested and he froze Rocky in place, killing him. Judah, horrified that he had been dating a mutant, broke off their relationship soon after. Bobby was sent to prison for murder, even though he acted in self-defense.

The Xavier Institute
Bobby was denied parole twice on the principle of his mutant status and kept in solitary confinement for most of his prison term. He thought it for the best - he didn't want to accidentally hurt anyone else.

At some point, Professor Charles Xavier quietly arranged for Bobby's release by telepathically erasing the memories of everyone involved with Bobby's case and taking him into the Institute's custody, with the consent of Bobby's parents. Bobby was so grateful for his rescue that he voluntarily enrolled as a student in the Institute.

Trivia

 * Unlike his mainstream counterpart, this version of Iceman is bisexual.