Jonathan Morgan Heit

as John Herschel (voice)

as Cubby

as Tarzan Kid (voice)

as Pete

as Arthur Milligan

as Zach

as Kip Supernova (voice)

as Mikey Davis

as Cubby

as Cubby

as Cubby (voice)

as Jimmy

as Oliver Foster

as Tough Franklin

as Mud Bud (singing voice) (uncredited)

as Patrick

as Frankie Waters

as Boy #1

as Hans Junior (voice)

as Billy Cooper

as Amusement Park Ride Operator (voice)

as Grandchild #2, Great Grandchild (voice)

as (voice)

as Boy (voice)

as Billy (voice)

as Little Boy (voice)

as Kid #1 (voice)

as Jessie