Rocket, originally named Subject: 89P13, was abducted from North America on Earth by the High Evolutionary and taken aboard his ship into space.

Rocket shows extreme intelligence, finding the flaw in the High Evolutionary's design to accelerate animal evolution that made them violent.

Groot sacrifices himself to shield Rocket and the team, and the remaining Guardians are able to gain control of the Power Stone and destroy Ronan.

They crash land on a planet, where Quill meets his father, revealed to be Ego, a primordial Celestial who manifests a human avatar that allows him to interact with other races.

Quill, Gamora, and Drax go with Ego to his planet while Rocket and Groot stay behind to watch Nebula and repair the ship.

[a] Four years later, Rocket and the Guardians respond to a distress signal and end up rescuing Thor, who is floating in space amidst the wreckage of the Statesman.

Gamora tells them of the plan to obtain the Infinity Stones, and the Guardians split up, with Rocket and Groot accompanying Thor to Nidavellir to create a new weapon.

Thor transports himself, Rocket, and Groot to Wakanda on Earth via the Bifröst to help members of the Avengers, Bucky Barnes, and the Wakandan army in the battle against the Outriders.

[2] Rocket, along with Steve Rogers, Natasha Romanoff, Bruce Banner, James Rhodes and Thor, depart on the Quinjet and arrive at the Avengers Compound.

After detecting another energy surge, Thor, Rogers, Romanoff, Rhodes, Banner, Danvers, and Nebula go into space to the Garden planet where they confront Thanos about the Stones.

However, Rocket finds that the Gauntlet is empty, in which Thanos reveals he destroyed the Stones, causing Thor to abruptly kill him.

Rocket then accompanies Banner to New Asgard to convince a depressed Thor to return to help with the effort, while also meeting Valkyrie, Korg, and Miek.

Scott Lang, in his Giant-Man form, saves them, and Rocket joins the battle against alternate Thanos' army, where he is reunited with Groot.

Rocket, Thor, and the rest of the Guardians return to space and embark on several adventures, while reuniting with Kraglin, who joins the team.

During the fight, Rocket is seriously injured, leaving the Guardians unable to tend to his wounds due to a kill switch embedded in him.

The team next visit Counter-Earth, and then split up, with Quill, Nebula, and Groot boarding the High Evolutionary's ship in search of a scientist named Theel, believed to have information that can save Rocket.

Rocket flatlines and has a near-death experience, where he is met by his former childhood friends, Lylla, Teefs, and Floor, who tell him that his time has not yet come before Quill successfully implements the override code and revives him.

[6] The Guardians, in their current form, decide to disband upon returning to Knowhere, with Quill bestowing the captaincy upon Rocket before leaving for Earth.

Rocket leads a new Guardians lineup, consisting of himself, Groot, Cosmo, Kraglin, a reformed Adam with his pet Blurp, and the High Evolutionary's recent creation Phyla.

A cyborg version of Rocket was among the universal killers and righteous heroes from different realities who were abducted by Doctor Strange Supreme to feed to the Forge, until they were freed by Captain Peggy Carter and returned home by Kahhori.

The comic book character was created by Bill Mantlo and Keith Giffen,[7] and inspired by the Beatles song "Rocky Raccoon".

[8] Rocket Raccoon first appeared in Marvel Preview #7 (Summer 1976), in the back-up feature "The Sword in the Star", under the name "Rocky".

"[15] Feige reiterated that sentiment in a September 2011 issue of Entertainment Weekly, saying, "There's an opportunity to do a big space epic, which Thor sort of hints at, in the cosmic side" of the Marvel Cinematic Universe.

[17] Feige announced that the film was in active development at the 2012 San Diego Comic-Con during the Marvel Studios panel, with an intended release date of August 1, 2014.

[19] In Guardians of the Galaxy, Rocket was characterized as a genetically engineered raccoon bounty hunter, mercenary, and master of weapons and battle tactics.

"[30] In addition to Cooper's voice and Sean Gunn's movements, the appearance of Rocket was based on an actual raccoon named Oreo.

3, Gunn said that the film tells Rocket's story, including his background and "where he's going", along with how that ties into the other Guardians and the end of this iteration of the team.

He's the most interesting out of them all, the most emotionally vulnerable and a character audiences love not only for his cuteness and humor, but for his saddened soul and desire to fit into the dramatic universe of Marvel.