Stanley Tucci Leonardo da Vinci (voice)
Allison Janney Ms. Grunion (voice)
Dennis Haysbert Judge (voice)
Patrick Warburton Agamemnon (voice)
Leslie Mann Patty Peterson (voice)
Tom McGrath Odysseus (voice)
Lake Bell Mona Lisa (voice)
Ty Burrell Mr. Peabody (voice)
Danny Elfman Original Music Composer
Mel Brooks Albert Einstein (voice)
Thomas Lennon Italian Peasant #2 (voice)
Andy Nelson Sound Re-Recording Mixer
Stephen Colbert Paul Peterson (voice)
Rob Minkoff Director, Creepy Boy (voice)
Ariel Winter Penny Peterson (voice)
Richard King Sound Designer, Supervising Sound Editor
Joshua Sternin Thanks
Stephen Tobolowsky Principal Purdy (voice)
Walt Dohrn French Peasant / Taxi Driver / Spartacus (voice)
Scott Menville Additional Voices (voice)
Karan Brar Mason (voice)
Steve Valentine Ay (voice)
Max Charles Sherman (voice)
Jess Harnell Abraham Lincoln / George Washington / Bill Clinton / Isaac Newton / New York City Cop (voice)
Christi Soper Hilt Casting
Pat Musick Teacher (voice)
Hope Levy Additional Voices (voice)
Ava Acres Additional Voices (voice)
Raymond Ochoa Additional Voices (voice)
Robert Ben Garant Egyptian Spectator / Italian Peasant #1 (voice), Additional Dialogue
Nicholas Guest French Peasant (voice)
Jeff Fischer Additional Voices (voice)
Michael Babcock Sound Re-Recording Mixer, Sound Designer, Supervising Sound Editor
Nathan Schauf First Assistant Editor
Alan Shearman Additional Voices (voice)
James Beshears Executive In Charge Of Post Production
Guillaume Aretos Robespierre (voice)
Donald Fullilove Additional Voices (voice)
Zach Callison King Tut (voice)
Rif Hutton Additional Voices (voice)
Michael Andrews Editor
Chris Bacon Additional Music
Jadon Sand Additional Voices (voice)
Jacqueline Pinol Additional Voices (voice)
Rosemary Alexander Additional Voices (voice)
Jackie Gonneau Additional Voices (voice)
Newell Alexander Additional Voices (voice)
Joyce Arrastia Thanks
Stephen Apostolina Additional Voices (voice)
Steve Alterman Additional Voices (voice)
Jim Passon Color Timer
Shane Prigmore Visual Development
David Cowgill Additional Voices (voice)
Mitch Carter Additional Voices (voice)
John Roesch Foley
Michelle Ruff Additional Voices (voice)
Eva Bella Additional Voices (voice)
Cullen McCarthy Kid (voice)
Alyson Dee Moore Foley
Dennis Sands Scoring Mixer
Craig Wright Screenplay
Edie Mirman Additional Voices (voice)
David Slonaker Orchestrator
Steve Bartek Orchestrator
Luisa Leschin Additional Voices (voice)
Joshua Rush Carl (voice)
Leslee Feldman Casting
Blake Bertrand Additional Voices (voice)
Molly Jackson Additional Voices (voice)
Michael Miller ADR & Dubbing
Al Rodrigo Ajax (voice)
Mollie Gamo Casting Associate