Shawn Levy Director, Producer Ben Stiller Larry Daley, Laaa Actor Robin Williams Teddy Roosevelt Actor Owen Wilson Jedediah Actor Dan Stevens Sir Lancelot Actor Ben Kingsley Merenkahre Actor Steve Coogan Octavius Actor Ricky Gervais Dr. McPhee Actor Rebel Wilson Tilly Actor Skyler Gisondo Nick Daley Actor Rami Malek Ahkmenrah Actor Patrick Gallagher Attila the Hun Actor Mizuo Peck Sacajawea Actor Anjali Jay Shepseheret Actor Dick Van Dyke Cecil Actor Percy Hynes White Young Cecil Actor Bill Cobbs Reginald Actor Mickey Rooney Gus Actor David Guion Screenwriter, Executive Producer Michael Handelman Screenwriter, Executive Producer Chris Columbus Producer Mark Radcliffe Producer Michael Barnathan Executive Producer Josh McLaglen Executive Producer Mary McLaglen Executive Producer Guillermo Navarro Cinematographer Dean Zimmerman Film Editing Alan Silvestri Original Music Heike Brandstatter Casting Coreen Mayrs Casting Martin Whist Production Design Ravi Bansal Art Director Nigel Evans Art Director Catherine Ircha Art Director Peter Lando Set Decoration Marlene Stewart Costume Design