Reparto (8)
Corey BurtonGeneral Knowledge (voice)
Scott CurtisBobby (voice)
George WendtStomach (voice)
Jon LovitzRight Brain (voice)
Dana CarveyRight Ventricle (voice)
Bobcat GoldthwaitAdrenal Gland (voice)
Charles GrodinLeft Brain (voice)
Kevin NealonLeft Ventricle (voice)