Guardians of the Galaxy the movie is based on the comic book by what authors?
Guardians of the Galaxy Vol. 2: Guardians of the Galaxy Vol. Guardians of the Galaxy (2008 team):  Dan Abnett and Andy Lanning formed the team from existing and previously unrelated characters created by a variety of writers and artists, with an initial roster of Star-Lord, Rocket Raccoon, Quasar, Adam Warlock, Gamora, Drax the Destroyer and Groot.
Dan Abnett and Andy Lanning