Main Cast
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)