The X-Men first appeared in Marvel Comics in September 1963. The characters were created by writer Stan Lee and artist/co-writer Jack Kirby as a result of Stan Lee needing more superheros but not wanting to have to design an origin story on how they acquired their super powers.
The X-Men are mutants, a subspecies of humans who are born with superhuman abilities. They are led by Charles Xavier, also known as Professor X, a powerful mutant telepath who can control and read minds. Early X-Men issues introduced the original team composed of Cyclops, Jean Grey (Marvel Girl, Phoenix and Dark Phoenix), Beast, Angel, and Iceman.
Iceman has the ability to manipulate ice and cold by freezing water vapor around him. This allows him to freeze objects, as well as turn his body into ice.