Nathan Fillion to Play Villain in Guardians of the Galaxy 2?

Nathan Fillion, hero to fantasy TV geeks, will appear in the sequel to Guardians of the Galaxy, but until now fans have had to speculate about who he'd play in the film. The specualtion continues, but this week, leaked photos from the set of the movie have provided some solid evidence for the leading theory.

The photos show a movie theater displaying posters for movies starring Fillion as Simon Williams, a character from the Marvel universe who is the secret identity of Wonder Man. Williams is an actor and bad guy whose tumultuous biography ultimately has him joining the Avengers and becoming part of its West Coast branch. If Fillion plays Wonder Man, it's not clear which stage of the character's career the film's story will represent.

The set photos also suggest that at least part of the Guardians of the Galaxy sequel will take place on Earth, unlike the original film which took place entirely in space and on distant planets. Most of the cast of the original film return, including Chris Pratt as Peter Quill/Star Lord and Zoe Saldana as Gamora. Fillion starred in the short-live Joss Whedon sci-fi series Firefly, and he currently stars in the TV series Castle.