Yuri Petrovich, the fourth Crimson Dynamo, first appeared in The Champions #7 (Aug. 1976) as the son of Ivan Petrovich - a friend of the Black Widow (now-reformed). When Western agents (presumably Americans) failed to convince Ivan to defect to the West, they assassinated Yuri's mother; in the chaos that followed, Ivan and Yuri each believed the other dead. Yuri was brought to the West, where Soviet agents posing as Westerners indoctrinated him to hate the West. When Black Widow and Ivan defected to the United States, Yuri was "rescued" by the Soviets, returned to Russia, and trained as a KGB assassin. He was given the Crimson Dynamo armor and sent to kill the Black Widow and Ivan. Yuri and his allies (his girlfriend Darkstar, the Griffin, Rampage, and the original Titanium Man) fought the Black Widow and her teammates, the Champions. When Yuri learned of the true nature of his "Western" captors, he went berserk. Darkstar teamed up with the Champions to subdue Yuri, and after he and his other allies were defeated, Yuri was returned to Russia, convicted by the Soviet government, and exiled to a Siberian labor camp.