Josef Ostendorf

as Lou Dollart

Beverly D'Angelo

as Mrs. Dollart

Jerry Stiller

as Prof. Plumpingham

Lauren Hutton

as Galeristin Jellybelly

Steffen Wink

as Nick McRafferty

Donald Arthur

as Jean-Paul Canalligator

Dee Bradley Baker

as Monty Mad-Rat Jr. (voice)

Lynsey Bartilson

as Isabella Noble-Rat (voice)

Yoshinori Yamamoto

as Mr. Futon San

Philipp Moog

as Monty Spinnerratz

Carmen Plate

as Isabella Nobelratz

Klaus Havenstein

as Monty Senior

Gudo Hoegel

as Rudi Raffratz

Jonathan Kinsler

as Architect Stressback

Andreas Herder

as Tom O'Dooley

Hans-Joachim Recknitz

as Mr. Adams

Natja Brunckhorst

as Mrs. Lucy

Klaus Herzog

as Gallery Customer

Friedrich Schoenfelder

as Walter Demokratz

Harald Leipnitz

as Finanzminister Erwin Geizratz