With Zemo gone, the Masters broke up; but the mad robot Ultron (a rogue creation of Avengers founder Henry Pym), hiding his mechanical nature behind the costumed identity of the Crimson Cowl, recruited Melter, Radioactive Man, Klaw, and Whirlwind into a new Masters of Evil in a plot to destroy the Avengers. Ultron hypnotized Avengers butler Edwin Jarvis into compromising the Avengers' security system, even compelling Jarvis to act as his occasional stand-in, supposedly the "real" Crimson Cowl; but a new Black Knight (Dane Whitman), secretly the heroic nephew of his recently deceased predecessor, had joined Ultron's Masters to fight them from within. Thanks in part to the efforts of Whitman and a repentant Jarvis, the Masters were defeated; however, they soon regrouped (minus Ultron and Whitman) in an attempt to kidnap noted scientist Dr. T. W. Erwin from the annual Halloween parade in Rutland, Vermont. They were soundly defeated through the combined efforts of the Avengers and the short-lived feminist super-group known as the Lady Liberators.
Members:
Ultron
Klaw
Radioactive Man
Whirlwind
The Melter
