Cannonball is the name of a fictional character, a mutant superhero in the Marvel Comics universe. His real name is Samuel Guthrie. He possesses the superhuman ability to cloak himself in a sheath of energy and propel himself through the air; while thus cloaked, he is "nigh-invulnerable". He first appeared in Marvel Graphic Novel #4: The New Mutants.
Cannonball was a founding member of the New Mutants team, and remained with the team through its transition into X-Force. He later became a member of the X-Men, the international X-Corporation, and the X-Treme X-Men team. He has an on-and-off relationship with his sometime teammate, Meltdown.
He is related to the mutant husk x-member of [[Generation-x]}