Groot is a superhero and a major character of the Marvel Cinematic Universe. He is a main character of the Guardians of the Galaxy duology, one of the tritagonists of Avengers: Infinity War, and a minor character of Avengers: Endgame. He will return in Thor: Love and Thunder and Guardians of the Galaxy Vol. 3. He is a Flora colossus, an ancient race of tree-like humanoids who became the best friend of Rocket Raccoon. The duo became interchanged with saving the galaxy from Ronan the Accuser, who attempted to do so by using the Power Stone. Groot sacrificed himself to save his teammates, but was able to return via offspring, becoming baby Groot. Though a baby, Groot managed to aid his allies in defeating Star-Lord's father, Ego the Living Planet. In 2018, he attempted to stop Thanos from wiping out half of the universe, but was erased from existence. He was resurrected by the Hulk in 2023, and helped his teammates and allies defeat Thanos and his army.