Bug is an Insectivorid master thief and adventurer from the planet Kaliklak in the Microverse (a.k.a. Inner Space), a “sub-atomic” realm actually accessed via the energies of shrinking. Known as a humorous, lighthearted flirt, he is also a charismatic leader and adept warrior. Bug was raised on Kaliklak during the tyranny of the near-immortal evil Baron, and he trained under a master thief. He eventually rose to lead a gang of rebels, running raids against Baron Karza’s forces. Betrayed by his father, Wartstaff, he was captured by the colonial governor. Bug escaped in a fighter craft, encountering a Raider spacecraft in which the stoic armored Acroyear, crown-prince of the planet Spartak, was bound by his traitorous brother, Shaitan. Bug rescued Acroyear, and Shaitan fled. Though opposites in temperament, Bug and the king formed an unbreakable bond of friendship. They were eventually captured, sent to the empire’s central planetary system, Homeworld, and forced to fight in Baron Karza’s Pleasure Pits. During one battle, Commander Arcturus Rann returned from a millennium-long telepathic journey across the Microverse which he had spent in suspended animation aboard his ship, the H.M.S. Endeavor, with his roboid companion, Biotron. Greeted with hostility from Baron Karza’s Dog Soldiers, Rann was imprisoned with Bug and Acroyear. They escaped the Pit and fled along with Princess “Marionette” Mari and her roboid, Microtron, forming a team that later became known as the Microns. Breaching the Spacewall surrounding the Microverse, the group landed on Earth (Earth-616) in Daytona Florida at roughly one-twelfth their normal relative size. They befriended teenager Steven Coffin and his father, Ray. Separated from the team, Bug followed the Coffins to the laboratory of Prof. Philip Prometheus at Cape Canaveral’s Human Engineering Life Laboratories (H.E.L.L.). There Bug defended Steven from the mad professor, who wished to use his Prometheus Pit, a passageway between Earth and the Microverse, to learn the science of Inner Space and transcend the limitations of his cybernetic body. Reunited, Bug and the team encountered the Man-Thing, while Baron Karza used the Pit to enter Earth. The Baron aspired to conquer Earth, but was repelled by the power of Captain Universe, wielded by Ray Coffin.