Rocket Raccoon was a master strategist with a laser gun and rocket pack. But he is not actually a Raccoon as his alien species just resembles the Earth Raccoon. He is is a leading member of the Guardians of the Galaxy alongside Star-Lord, Drax the Destroyer, Gamora, Groot, and Nova, whom he served as a mentor for.
The Guardians battle the Chitauri an alien race led by Korvac. When Rocket Raccoon's ship is pulled into the Chitauri ship, Rocket fakes surrender so that they can free the captive Guardians of the Galaxy members. Afterwards, Spider-Man discovers that the Chitauri are planning to destroy the Earth. The Guardians plan to run the Chitauri ship into the sun while fighting the Chitauri forces. When their tactic does not work, the Guardians end up making their way towards the Dark Matter Cannon. While Nova and Spider-Man head to the Dark Matter Cannon, the Guardians fight the Chitauri and Korvac. After Korvac is defeated by Groot, Nova destroys the Dark Matter Cannon and the Chitauri ship is destroyed.