Kurtwood Smith

Red Forman

Carpenter K. Smith

Old Man Miller

Sheriff Bob Fuller

Sam Peterson

Gene

Vernon Masters

Uncle Dave

Geoffrey Shurlock

Orin Helgesson

Gene / Park Ranger #3 (voice), Gene (voice)

Kanjar Ro (voice)

Dr. Theodore Rosen

Jacob

Dick Clayton

Brett Connors

Matt Trakker, Reginald 'Red' Forman, Walt Disney, JFK's Bodyguard, Lemming

Dr. Obyedkov

Prosecutor (voice)

Principal Block

Red Forman

Otis Hefter

Stump Sisson

Secretary of Defense Baird

Earl Stone

Captain Scanlon

Sheriff Deegan

General Stanley Cooper

Annorax

Agent Bill Patterson

Patterson (uncredited)

Cliff Forrester

Thrax

Prison Director Poe

Federation President

Vogel's Follower

Professor Flournoy

Mr. Perry

Carson

Choreographer

Mr. Wheelie (voice)