Much of Captain America's past matches that of his Earth-616 counterpart; however recent insights into the past of the Captain America of Earth-9997 have been revealed by the studies made by X-51, Kyle Richmond, as well as Cap's own travels through Mar-Vell's Cloak (which was once owned by the hero of the same name). At some point in his past, Cap was held prisoner of the Red Skull and an army of Neo-Nazis; during this encounter, the Red Skull claimed that Dr. Abraham Erskine was secretly a member of the Nazi Party. The Red Skull went on to explain that Adolf Hitler had funded scientists to work for the Allies, so that their discoveries would aid the Axis powers. The secret plan of the Nazis for the super-soldier project was to create a perfect Aryan race, and as such, they picked Steve Rogers, a scrawny young man with blond hair and blue eyes. Red Skull also went on to explain that the assassin that killed Erskine was originally meant to kill Rogers after his birth, and that Erskine's death was not intended.