Firefly fans rejoice! For years, I mean literal years fans of Castle and Firefly have been begging for star Nathan Fillion to be apart of the ever growing Marvel Cinematic Universe. This is in part to his friendship with Avengers director Joss Whedon and Guardians of the Galaxy director James Gunn. One of the main fan casting for Fillion was the part of Hank Pym in Ant-Man. Well, obviously we learned Hank Pym will be much older and be played by Michael Douglas....
But don't fret during a Firefly panel at the St. Louis Comic-Con Nathan Fillion reveals he may just have a cameo in James Gunn upcoming Guardians of the Galaxy. This comes after confirmation from the director himself that reshoots have taken place with a secret cameo....
