The Avengers Vol. 1 (1963-1996) #43

Plot

First appearance of the Red Guardian. Quicksilver shows everyone his new ability to fly and Captain America has to prove himself to Hercules before he will take orders from him; Hawkeye gets information about the Black Widow's whereabouts, and Hercules and himself travel to rescue her; Meanwhile behind the bamboo curtain Colonel Ling shows a general his newest asset: The Red Guardian; He is to be the equal of Captain America in every way but is to stand for communism. Hercules and Hawkeye attack the complex, but Hercules is lured into the Psychotron and Hawkeye captured by the Red Guardian; Red Guardian is revealed to be the Black Widow's husband who she thought was dead; The Avengers leave to rescue Black Widow, Hawkeye and Hercules. Avengers roll call: Captain America, Hawkeye, Goliath, the Wasp, Quicksilver, and the Scarlet Witch. (mycomicshop.com)