"Willy McBean and His Magic Machine" is a 1965 stop-motion animated musical film produced by Arthur Rankin, Jr. and Jules Bass. The story follows a young boy named Willy McBean and his talking monkey friend, Pablo. They work together to stop the evil Professor Rasputin Von Rotten from changing history using a magical time machine. The film features a great voice cast, including Larry D. Mann as Von Rotten and Billie Mae Richards as Willy.