Marvel has made a habit of using their superhero films to not only provide subtle nods or fan service to the diehard comic book know-it-alls, but also help offer hints and teases of films to come in the future. With Guardians of the Galaxy, they had the chance to do the same with the largely unexplored cosmic side of their comic book universe. And they certainly didn’t pass it up.
Besides the wealth of inside jokes, Easter eggs, and direct references to the source material, fans hoping to see even the more outlandish or world-shattering characters and storylines (that make “Planet Hulk” seem like child’s play) adapted to film have reason to hope. We can’t say they’ll be coming soon, but Marvel has planted plenty of seeds.
Needless to say, there will be SPOILERS in our list of Guardians of the Galaxy trivia, so read at your own risk.