Robin Williams

Theodore Roosevelt

Steve Coogan

Octavius

Bill Hader

George Armstrong Custer

Owen Wilson

Jedediah Smith

Hank Azaria

Kahmunrah / The Thinker / Abe Lincoln

Ben Stiller

Larry Daley

Mindy Kaling

Docent

Ricky Gervais

Dr. McPhee

Jon Bernthal

Al Capone

Jay Baruchel

Sailor Joey Motorola

Alain Chabat

Napoleon Bonaparte

Thomas Lennon

Writer

Mark Radcliffe

Executive Producer

Christopher Guest

Ivan the Terrible

Shawn Levy

Director

Amy Adams

Amelia Earhart

Thomas M. Hammel

Executive Producer

Patrick Gallagher

Attila the Hun

Matthew Harrison

Neanderthal #2

Rami Malek

Ahkmenrah

Jake Cherry

Nicky Daley

Mizuo Peck

Sacajawea

Kerry van der Griend

Neanderthal #1

Randy Lee

Hun #1

Darryl Quon

Hun #2

Rick Dobran

Neanderthal #3

Gerald Wong

Hun #3

Paul Cheng

Hun #4

Josh McLaglen

Executive Producer

Robert Ben Garant

Writer