Ricky Gervais will join Kermit the Frog and Miss Piggy in the new Muppets film, director James Bobin confirmed.
The writer and star of The Office will play the sidekick to villain Constantine - who looks identical to Kermit - in the latest film of The Muppets series, which is set for a March 2014 release.
Comedian Tina Fey will also be in the new film, playing prison guard Nadya, and Modern Family actor Ty Burrell will play an Interpol agent.
Bobin said the film will pay homage to the 1960s comedy Pink Panther films, starring British comedian Peter Sellers.
The director said: "It's a tip of the hat to the old-school crime capers of the '60s, but featuring a frog, a pig, a bear and a dog - no panthers, even pink ones - along with the usual Muppet-y mix of mayhem, music and laughs."