Rocket

Subject 89P13, better known as Rocket, is a genius-but-violent engineer, who once was experimented upon in a Kree research facility on Halfworld. Now the inseparable partner of Groot, they both currently work as members of the team known as the Guardians of the Galaxy alongside Peter Quill, Gamora and Drax.

Background
Rocket was once a bio-cybernetic experiment in a Kree research on Halfworld. His origin prior to this facility are unknown.

Trivia

 * Regarding Rocket and Groot's redesign, the inseparable nature of the duo resulted in not only a complementary fighting style but also a visual design that played on the strengths of their bond. Rocket's passion for gadgets was reflected in his outfit. Gauthier-Leblanc explains that their gear echoes their dynamic and how integral they are to one another. For instance, Groot wears a harness created by Rocket so he can climb up and fire away at enemies, and Rocket sports a bead-shaped like a mini-Groot in his goatee.