Night at the Museum: Battle of the Liberace Museum

Larry Daley has returned to the museum of Natural History.

Characters:

 * Larry Daley (Ben Stiller)
 * Tess Grey (Amy Adams) - Larry's love interest
 * Theodore Roosevelt (Robin Williams)
 * Nick Daley (Jake Cherry)
 * ??? (Rose Byrne) - Rebecca Hutman's replacement as the Museum docent at the Museum of Natural History
 * Jedediah (Owen Wilson)
 * Octavius (Steve Coogan)
 * Dr. McPhee (Ricky Gervais)
 * Sacagawea (Mizuo Peck)
 * Attila the Hun (Patrick Gallagher)
 * Dexter (Crystal the Monkey)
 * Christopher Columbus (Pierfrancesco Favino)
 * ??? (Arnold Vosloo) - main antagonist

Plot:
???