Richard Haydn

as Caterpillar (voice)

as Gerhard Falkstein

as Max Detweiler

as William Brown

as Deputy Commissioner Hewitt

as l'empereur François-Joseph

as Oliver Wiggins

as Prof. Summerlee

as Baron Popoff

as Limo

as Chuck

as The Accountant

as Bartlett Finchley

as Julian Clarington

as Self

as Edwin Carp

as Mr. Hemingway

as Whitey

as Prime Minister