In the comics, Rocket becomes a temporary leader of the Guardians when the Star-Lord disappears, and it’s Rocket who introduces tree-alien Groot to the team. Their friendship is one of comics’ most interesting – and moving.
“They are the R2-D2 and C3-P0 of the Marvel Universe,” says writer Brian Michael Bendis. “I know that for people that don’t know who the Guardians are, Rocket Raccoon is like this thing that people go, ‘Is that, like, a real thing?’ My wife saw the promo images and she goes, what is that, is that a raccoon?
“Rocket Raccoon, for those who don’t know, is not an Earth Raccoon. He’s just an alien that happens to look just like a raccoon.”