[Update: Image removed]
Tina Fey stars as Nadya, described as a "feisty" prison guard. According to the press materials, The Muppets…Again! finds the cast entangled in an international crime caper headed by the World's Number One Criminal, Constantine, who happens to look exactly like Kermit.
While some believe this is a photo of Fey with Kermit, everyone's favorite frog does not have a mole on his face, leaving it open to speculation that this is the infamous Constantine.
Update: Editor's note, this version of the post corrects an earlier misstatement about the origin of Fey's costume in the above image. (3/21/13)