Iceman

Early Life
Bobby first discovered hia mutant abilities when he found himself unable to stop felling cold and shivering when Bobby Drake realized his abilities, he took it very hard, putting up the front of the typical class clown, constantly pulling pranks and playing tricks with his abilities. This drew the attention of Professor Charles Xavier, who enlisted young Bobby into the X-Men. With his abilities, Iceman can generate and manipulate ice and snow and is completely invulnerable to cold weather. Due to Iceman's calm exterior and ability to remain so in tense situations, he is the unofficial leader of the New Mutants, at one point even taking the lead when some of the other New Mutants decided to play their own pranks. Despite his continual pranks, Iceman is truly an exceptional student, and is an asset to the X-Men, especially should they need his services in a snowball fight.

In the Comics

 * When Charles Xavier started the X-Men, Cyclops was one of the first members along with Jean Grey, Angel, Iceman and Beast.