Assembled at the request of Franklin Delano Roosevelt, the Invaders were the lead superhuman adventurers acting on behalf of the Allies overseas during World War II. As the war came to a close, the group reorganized into a stateside team of adventurers known as the All-Winners Squad.

A new team of Invaders was gathered by the Thin Man in modern times to fight against revitalized Axis powers. The original Invaders have also reunited on occasion in the present.

Other members include Captain America II, Bucky II, Toro, Spitfire, Union Jack I, II and III, Mighty Destroyer, Human Top, Golden Woman, Aarkus the Vision, Blazing Skull, Silver Scorpion, Tara, Thin Man, Fin, Radiance and Iron Cross IV.