Quasar is the name of several fictional superheroes in the Marvel Comics universe.Quasar's powers are derived from the pair of Quantum Bands fused to his wrists (or more specifically, from the seven gems on each of the bands). Quasar's quantum-bands are permanently affixed to his wrists; while he can make light bend around them so they appear to be invisible, they are still tangible. They are linked to their wearer's nervous system and grant tremendous powers of energy manipulation. The wrist-bands were originally created by Eon to be worn by his designated Protector of the Universe. These alien artifacts are composed of unknown materials. The Quantum Bands were discovered by the Uranian Eternals in a weapons depot left by the alien Kree and brought to Earth by the deluded Crusader that believed himself to be the 1950s Marvel Boy.
Foremost amongst these powers is the ability to tap into a limitless energy source called the Quantum Zone. Quasar can project quantum energy in the form of devastating beams of force or heat, but Vaughn more commonly employed them to fashion incredibly durable constructs of solid energy, such as containment spheres or pincers. He protected himself with a personal force field of quantum energy.