Did Nathan Fillion just reveal his surprise role in the upcoming Guardians of the Galaxy ? Probably not, but it's hard to dismiss something this sensationally geeky.

Loading

Fillion was fielding questions at the St. Louis Comic-Con's Firefly panel when one particularly saucy questioner asked him about his history with Guardians director James Gunn. Fillion starred in Gunn's breakout movie Slither, and wore a ridiculous costume as The Holy Avenger in Super. Given his relationship with Gunn and Avengers 2 director Joss Whedon, this fan asked Fillion, "Were you wanting to get a part in Guardians of the Galaxy?"Fillion, mischievous devil that he is, responded, "Wanting to? Or maybe, did?" After the crowd calmed down he continued, cryptically, "I'm just sayin' maybe. Maybe there'll be a surprise. Maybe check the credits after the movie when you watch it." At which point the entire auditorium went bananas. The fun starts at the 38:22 mark in the YouTube video below.Sure, it's possible Fillion -- either with the studio's blessing or without -- just leaked a bit of fanboy catnip in front of a live audience. By referring to the end credits, he could be pointing to one of Marvel's trademark post-credits sequences, which could in turn lead to an entire...ahem...universe of possibilities. On the other hand, maybe he's just saying you'll have to check the credits to know if he was in the movie. I wouldn't put it past him to volunteer to play an anonymous alien extra just for fun.Either way, we'll have to wait until August 1 when Guardians of the Galaxy premieres to find out.Via Coming Soon

Would you like to know more? Followon Twitter oron IGN. Service guarantees citizenship.