Durability: Normal; when using his superhuman powers, however, Cannonball achieves metahuman durability due to an energy field which forms over his body.
Strength level: Cannonball possesses the normal human strength of a young man of his age, height, and build. However, when he uses his powers to apply thrust beneath him, the force thus generated enables him to bear aloft over a ton of weight in addition to his own.
Known superhuman powers: Cannonball possesses the ability to bodily generate thermo-chemical energy and release it from his skin. This energy, released by an act of will, is accompanied by smoke, flame and condensation, much like the exhaust of a rocket engine. At his present level of experience, he can only release this energy in one direction, beneath him. The equal and opposite reaction to this thrust causes his body to be propelled through the air like a human rocket. At first, he could not stop his propulsion until his immediate store of energy was depleted or until he hit an obstruction of sufficient mass to stop him. However, he has since learned how to cut off his propulsive power at will. As a side effect of forming the thermo-chemical energies over the surface of his body, Cannonball becomes virtually invulnerable. Accompanying the release of energy is a half-inch thick energy field which channels the explosion and protects his skin from the direct effects of the blast. It also negates momentum and related energy effects thereby cushioning his entire body from any impact up to a half-minute from the depletion of his energy. Not only is he protected from rough landings, but he is also protected from nearly all types of injury while in flight. The protective field also protects any person or object with which he is in physical contact.
Cannonball once recovered from mortal injuries
inflicted by Sauron that allegedly left him temporarily
dead. It has been theorized that Cannonball's miraculous
recovery was an indication that he was an External, a
mutant gifted with immortality. It is unclear whether or
not Cannonball is indeed an External, but it has
subsequently been demonstrated that even Externals can
be permanently killed.