Not since Abed’s sudden cameo in Captain America: The Winter Soldier have fans of the Marvel Cinematic Universe had so much to look forward to. Guardians of the Galaxy director James Gunn, when pressed over this past weekend, admitted that his Slither buddy Nathan Fillion has a cameo in the upcoming spacefaring-goofballs-meet-serioustimes flick.

Gunn refuses to say who or what Fillion is, but rules out a cameo as Nova. Perhaps we’ll find him lounging behind glass in the Collector’s museum? Or maybe he’ll appear in flashback as Star-Lord’s goofball dad. Or…OR…the movie is set in space. Would it be so weird if a Firefly class ship was seen zipping by? It’s not like fellow Avengers poobah Joss Whedon would say no to such a thing.

Vin Diesel is a tree. Anything can happen.

[via Bleeding Cool]