Sam Guthrie, also known as Cannonball, is a fictional superhero appearing in Marvel Comics. He first appeared in New Mutants #1 in 1983. Sam is a mutant with the ability to generate kinetic energy, allowing him to propel himself through the air at high speeds, resembling a human cannonball. He often uses this power to assist his teammates and protect others. As a member of the X-Men and the New Mutants, Sam has been involved in various storylines that explore themes of friendship, responsibility, and the challenges of being a young hero. He is known for his strong moral compass and dedication to helping those in need.