Synopsis
When the magic powers of The Tablet of Ahkmenrah begin to die out, Larry Daley spans the globe, uniting favorite and new characters while embarking on an epic quest to save the magic before it is gone forever.
Cast

Ben Stiller
Larry Daley / Laaa

Robin Williams
Theodore Roosevelt

Owen Wilson
Jedediah Smith

Steve Coogan
Octavius

Ricky Gervais
Dr. McPhee

Dan Stevens
Sir Lancelot

Rebel Wilson
Tilly

Skyler Gisondo
Nick Daley

Rami Malek
Ahkmenrah

Patrick Gallagher
Attila the Hun

Mizuo Peck
Sacajawea

Ben Kingsley
Merenkahre

Dick Van Dyke
Cecil

Mickey Rooney
Gus

Bill Cobbs
Reginald

Andrea Martin
Rose

Rachael Harris
Madeline Phelps

Matt Frewer
Archibald Stanley

Brad Garrett
Easter Island Head (voice)

Regina Taufen
New York Reporter (voice)

Percy Hynes White
C.J. Fredericks

Brennan Elliott
Robert Fredericks

Kerry van der Griend
Neanderthal #1

Matthew Harrison
Neanderthal #2
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Strings