Joseph Campanella

Master (voice)

13 eps

Sheena Easton

The Groomer (voice) / Mrs. British Prime Minister (voice)

10 eps

Jim Cummings

General Parvo (voice)

9 eps

Rob Paulsen

Wolf King (voice) / Katzenstoki Ambassador (voice) / Gas Station Attendant (voice)

3 eps

Maurice LaMarche

Malcomb LaMarche (voice) / Radio Announcer (voice) / Russian President (voice)

3 eps

Larry Drake

Captain Zachary Storm (voice)

2 eps

Steve Franken

Professor Eugene Atwater (voice)

2 eps

Yoshio Be

Communications Officer (voice)

1 ep

Karla DeVito

Woman Soldier (voice)

1 ep

David Doyle

Professor Hubert (voice)

1 ep