Cannonball

Cannonball, also known as Sam Guthrie, is the tall, blond southern boy who joined at the same time as the other New Mutants. More well rounded and likable than Bobby in some terms, he's easily identifiable by being a head taller than most of the students, even some of the original cast. Tall, gawky, and clumsy, he has unintentionally knocked down several walls in the Institute and if he hits something he cannot demolish, he falls over, dazed.