Frank Gorshin
— Daffy Duck / Foghorn Leghorn (voice)
Thurl Ravenscroft
— Narrator (voice)
Eric Goldberg
— Marvin the Martian / Tweety Bird / Porky Pig (voice)
Jim Cummings
— Tasmanian Devil (voice)
Bob Bergen
— Porky Pig (archive footage)
Paul Julian
— Road Runner (voice) (archive sound) (uncredited)