Bucky is the name of several fictional characters, masked superhero in the Marvel Comics universe. The original, James Buchanan "Bucky" Barnes was created by Joe Simon and Jack Kirby as a sidekick character in Captain America Comics #1 (March 1941), published by Marvel's 1940s predecessor, Timely Comics. In 2005, the original Bucky was brought back from supposed death as the Winter Soldier. In 2008, he became Captain America after Steve Rogers was presumed to be dead.
Following his debut, Bucky Barnes appeared alongside Captain America in virtually every story in Captain America Comics and other Timely Comics series. In the post-war era, with the popularity of superheroes fading, Bucky appeared alongside team-leader Captain America in the two published adventures of Timely/Marvel's first superhero group, the All-Winners Squad, in the unhyphenated All Winners Comics #19 & 21 (Fall-Winter 1946; there was no issue #20). After Bucky was shot and seriously wounded in a 1948 Captain America story, he was succeeded by Captain America's girlfriend Betsy Ross, who became the super heroine Golden Girl. Captain America Comics ended with #75 (Feb. 1950), by which time the series had been titled Captain America's Weird Tales for two issues, with the finale a horror/suspense anthology issue with no superheroes.
Captain America and Bucky were both briefly revived, along with fellow Timely stars the Human Torch and the Sub-Mariner, in the omnibus Young Men #24 (Dec. 1953), published by Marvel's 1950s iteration Atlas Comics. Bucky appeared alongside "Captain America, Commie Smasher!", as the hero was cover-billed, in stories published during the next year in Young Men and Men's Adventures, as well as in three issues of Captain America that continued the old numbering. Sales were poor, however, and the series was discontinued with Captain America #78 (Sept. 1954).
Bucky appeared in very occasional flashback from the 1960s on, and co-starred with Captain America in flashback WWII adventures in Tales of Suspense #63-71 (March-Nov. 1965). His apparent death was depicted in flashback in The Avengers vol. 1, #56 (Sept. 1968).
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