Battlestar (Lemar Hoskins) is a superhero appearing in American comic books published by Marvel Comics. Created by Mark Gruenwald and Paul Neary, the character made his first appearance in Captain America #323 (1986). He became the fifth character to assume the alias Bucky before taking on the name "Battlestar."

Clé Bennett portrayed the character in the Marvel Cinematic Universe television series The Falcon and the Winter Soldier (2021).

Battlestar was created by Mark Gruenwald and Paul Neary, and was introduced as a nameless member of the Bold Urban Commandos in Captain America #323 (1986). In Captain America #327, he is called "Lemar" for the first time, but generally is still treated as interchangeable with the other BUCs. He rises from anonymity in Captain America #334, in which his full name is revealed and he adopts the identity of Bucky. Gruenwald later explained:

I get several letters every month asking when Bucky's coming back. And I said, "Well, if the government's getting a new Captain America, maybe they'd want to get a new Bucky." I had previously introduced three Buckies as the friends and partners of the Super-Patriot, the Bold Urban Commandos, and rather than create someone new, I decided one of them would be the Bucky. There were two white guys and a black guy, and I said why not the black guy. He at least stood out in the group. Cap had a black partner before in the Falcon, but he's had three other white partners so I said it's time for another black one. Thus, Bucky was black. Now I'm getting a lot of bad mail, and deservedly so, for my ignorance.

Writer Dwayne McDuffie informed Gruenwald that "Buck" is considered a derogatory term among African-Americans, as it was a term used before the American Civil War to refer to male slaves, and said that it was also racially offensive to have an adult black man taking on the identity of a teenage sidekick. Writer Mark Gruenwald had not known of the racial connotation of "Bucky", having grown up in a region with very few African-Americans, and worked with McDuffie to create a story to address the problem and give Hoskins a new name.

In Captain America #341 he is renamed Battlestar, dons his own unique costume, and is more explicitly presented as a partner to the new Captain America, rather than a sidekick. Gruenwald recalled, "The search for a good name for a partner to Cap is a whole half-hour unto itself. [laughs] We came up with every single name which was vaguely patriotic, vaguely military, and yet stood on its own, because some day these guys may split up." The name "Battlestar" was ultimately suggested by Captain America penciler Kieron Dwyer.

Lemar Hoskins was born in Chicago, Illinois. Along with his Army friends John Walker, Hector Lennox, and Jerome Johnson, he is given superhuman attributes by Dr. Karl Malus on behalf of the Power Broker, and they become wrestlers. The four later form the Bold Urban Commandos (also known as the "BUCkies"), and are employed by John Walker, known as the Super-Patriot. The Buckies stage a fake attack on the Super-Patriot for publicity. As a BUCky, Hoskins also attacks a group of foreign students.

When the Federal Commission on Superhuman Activities selects Walker to replace Steve Rogers as Captain America, Hoskins is the only one in his group allowed to accompany the new Captain America. He takes the identity of Bucky (after Rogers' original partner Bucky Barnes) and undergoes a rigorous training under the supervision of the Commission. Walker and Hoskins go undercover on a mission to stop the Watchdogs.