Rocket Raccoon, commonly referred to simply as Rocket, is a fictional character in the Marvel Cinematic Universe (MCU) media franchise voiced by Bradley Cooper and based on the Marvel Comics character of the same name. Rocket was based on movements from Sean Gunn and an actual raccoon named Oreo. Rocket is a hot-tempered mercenary and weapons expert who, along with his companion Groot, joins the Guardians of the Galaxy. They then come into conflict with Ronan the Accuser and Ego. Following the Blip, Rocket remains on Earth as a member of the Avengers. Five years later, Rocket and the Avengers quantum time travel to alternate universes to find the Infinity Stones. Following their success, Rocket joins the battle against an alternate Thanos, and rejoins the Guardians after their victory; departing for space. Later, he and the Guardians make their base on Knowhere before coming into conflict with Rocket's creator, the High Evolutionary. Rocket then assumes leadership of the Guardians of the Galaxy.