Frank Gorshin

as Daffy Duck / Foghorn Leghorn (voice)

Thurl Ravenscroft

as Narrator (voice)

Eric Goldberg

as Marvin the Martian / Tweety Bird / Porky Pig (voice)

Jim Cummings

as Tasmanian Devil (voice)

Bob Bergen

as Porky Pig (archive footage)

Paul Julian

as Road Runner (voice) (archive sound) (uncredited)