Radioactive Man becomes a recurring foe of the Avengers, being coerced by Baron Zemo to join the original Masters of Evil in a bid to destroy the Avengers. He is the first to confront the Avengers, and sticks Captain America and Giant-Man to the pavement with an adhesive, which Thor dodges. He is defeated by Giant-Man and Iron Man when they imprison him in lead coils. He is then deported back to China. The character reappears with the new Masters of Evil, organized by the robot Ultron. The villains, however, are betrayed by the Black Knight. Radioactive Man and his teammates appear once again during a Halloween parade and are defeated by a coalition of superheroines called the Lady Liberators.