In the 30th century, Charlie-27 was the descendant of a human subspecies genetically engineered as workers on gas-mining platforms suspeneded in the atmosphere of Jupiter. When the Solar System is invaded by the Badoon race, Charlie's people were wiped out, and he joined other survivors in the small rebel group which became known as the Guardians of the Galaxy.

As a Jovian, Charlie has tremendous strength, stamina, durability, and the ability to survive far greater gravity and pressure than mainstream humans. Since the mining platforms maintained breatheable air, he presumably cannot breathe the atmosphere of Jupiter. Charlie is a skilled pilot, and has military experience as a member of the United Lands of Earth Space Militia.