Howard the Duck is a supporting character in the Marvel Cinematic Universe, appearing as a minor character in the Guardians of the Galaxy films, and a supporting character in Avengers: Endgame. Versions of him also appear in What If...?, serving as a minor character of "What If... T'Challa Became a Star-Lord?" and "What If... Thor Were an Only Child?".
He is an extraterrestrial anthropomorphic duck and a former resident specimen in Taneleer Tivan's museum. When Carina destroyed the museum, Howard had a drink with the Collector before leaving to Contraxia to party and drink. Following the Blip, Howard was transported to Earth to fight in the battle against Thanos' army, and witnessed the mad titan's defeat.