(listed alphabetically by first name) - Bill Nighy (voice of Dr. Elefun, love him since his performance in Love Actually and then Underworld, The Girl in the Cafe, etc) - Eugene Levy (voice of Orrin, he is a super funny man) - Freddie Highmore (voice of Astro Boy, he was the boy in The Spiderwick Chronicles) - Kristen Bell (voice of Cora, the charming Kristen also plays Elle Bishop in Heroes)