The man known as Agent Axis was a criminal Axis agent during World War II. The full details of Agent Axis' early history and origin remain unrevealed. The Agent claimed that he was the result of a Nazi experiment that merged three men (one German, one Italian, and one Japanese) into a single being. However, although the process gave him great strength, reflexes, and endurance, it left his mind fractured. Determined to cure his condition, Agent Axis used the resources available to him to seek out Dr. Sam Sabuki, a Japanese-American who was interned at a detention center. At the same time, Sabuki was being sought by the hero Bucky, whose teammate in the Invaders, Toro, was lying near death. Agent Axis kidnapped Sabuki and held his daughter Gwenny Lou and Bucky as hostages. When Bucky lamented that Toro was dying nearby, the Agent, for purposes of his own, decided to capture him as well, abducting Toro from the hospital as well as Davy Mitchell, a child who happened upon the scene. After Sabuki successfully helped Toro, Axis ordered Sabuki to begin work on his own condition, holding the children hostage by connecting them to an elaborate machine. The machine malfunctioned when Toro sparked a confrontation with the Axis forces, which surprisingly endowed Gwenny Lou and Davy with superhuman powers. Davy could spin and move at superhuman speeds, and Gwenny Lou could fire "golden sunbursts" from her hands. The combined forces of the children and the recently arrived Invaders defeated Agent Axis and his troops.