LEGO Guardians of the Galaxy is a subtheme of Marvel initially released in 2014 based on the film Guardians of the Galaxy Vol. 1 produced by Marvel Studios and distributed by Walt Disney Studios. The sets are based on the film's plot which includes Peter Quill rallying his ragtag group, gun-toting Rocket Raccoon, treelike-humanoid Groot, enigmatic Gamora, and vengeance-driven Drax the Destroyer, to save the universe.
The LEGO Marvel Super Heroes theme is based on the characters created by Marvel Comics. Originally Marvel was a subtheme of the LEGO Super Heroes theme but was later separated into its own theme. Over time, sets in the Marvel Super Heroes theme includes most characters and situations released to the marvel Universe from films to the comics to TV series.