Cast
Nicolas Cage
Dr. Tenma (voice)
Madeline Carroll
Widget (voice)
Freddie Highmore
Astro Boy (voice)
Kristen Bell
Cora (voice)
Donald Sutherland
General Stone (voice)
Bill Nighy
Dr. Elefun (voice)
Eugene Levy
Orrin (voice)
Sterling Beaumon
Sludge (voice)
Nathan Lane
Ham Egg (voice)
Samuel L. Jackson
Zog (voice)
Charlize Theron
Narrator
David Alan Grier
Mr. Squirt / Math Cowboy / Boxer Robot