Sunspot

Sunspot (Roberto da Costa) is a mutant with the ability to absorb the suns power and use it for his own, allowing him abilites like superstrength and flight. He joins the X-Men as one of the New Mutants as Sunspot. It is possible he isn't good at earth science because he is one of the kids who went with Beast on an extra-credit field trip to the Redwood forest. He has a good friendship with Rahne Sinclair. It is revealed he is an overacheiver in almost everything he does.

Trivia:

 * He aided Kitty's team against Magneto in the finale
 * In the episode "Retreat",as he powered up, he jumped into the water to save Beast without extinguishing his flames or burning Beast.
 * He tends to be a flirt on new mutants.