More actors will be spending another Night at the Museum.

Christopher Guest has joined the cast of the movie's sequel. He'll play Ivan the Terrible in the newly-titled Night at the Museum: Battle of the Smithsonian.

Ben Stiller is getting ready for another night at the museum.

Also joining the cast are Jon Bernthal (Al Capone), Bill Hader (Gen. George Armstrong Custer) and French actor Alain Chabat (Napoleon).

Ben Stiller is back for this comedic follow-up, as he'll be joined by a trip of castmates from the original: Robin Williams, Ricky Gervais and Owen Wilson.