Elenco - Astro Boy
Freddie Highmore
Astro / Toby (voice)
Kristen Bell
Cora (voice)
Nathan Lane
Hamegg (voice)
Eugene Levy
Orrin (voice)
Matt Lucas
Sparx (voice)
Bill Nighy
Dr. Elefun (voice)
Donald Sutherland
President Stone (voice)
Charlize Theron
"Our Friends" Narrator (voice)
Nicolas Cage
Dr. Tenma (voice)
Madeline Carroll
Widget (voice)
Sterling Beaumon
Sludge (voice)
Samuel L. Jackson
Zog (voice)
David Alan Grier
Mr. Squirt / Math Cowboy / Boxer Robot
Alan Tudyk
Mr. Squeegee / Scrapheap Head / Stinger Two
Newell Alexander
General Heckler (voice)
Elle Fanning
Grace (voice)
Pilar Flynn
Cora's Mom (voice)
Dee Bradley Baker
Trashcan (voice)
Moisés Arias
Zane (voice)
Ryan Stiles
Mr. Moustachio / Burning Robot (voice)
David Bowers
Mike the Fridge (voice)Sofia Bowers
The Little Stinker (voice)Nicole Fletcher
"Oh No!" Kid (voice)Maryann Garger
Dr. Pigknuckle / Newscaster (voice)
Tiffany Hillkurtz
Bride to Be (voice)
David Feiss
Cowboy Robot (voice)
Nicholas Guest
French Waiter Robot (voice)
Max Burkholder
Billy (voice)Victor Bonavida
Sam (voice)Steve Alterman
Press Secretary (voice)
Rif Hutton
Metro City Sergeant (voice)Madeleine Russell
Metro City Girl (voice)Tony Matthews
Cora's Dad (voice)