Ηθοποιοί επεισοδίου
Townsend ColemanThe Tick (voice)
Ρομπ ΠόλσενArthur (voice)
Kay LenzAmerican Maid (voice)
Cam ClarkeDie Fledermaus (voice)
Jess HarnellSewer Urchin (voice)
Paul WilliamsMother of Invention (voice)
Τζιμ ΚάμινγκςLeonardo da Vinci / Mongol (voice)
Dorian HarewoodGeorge Washington Carver (voice)
Τζεφ ΜπένετThomas Edison (voice)
Λιν Μαρί ΣτιούαρτMona Lisa (voice)
Ed GilbertJohannes Gutenberg (voice)
Hamilton CampBenjamin Franklin (voice)
Cynthia SongéWheel (voice)