Casper Caveman was a caveman who attempted to have Daffy for Dinner. He is accompanied by his pet dinosaur Fido.
Casper appeared in Daffy Duck and the Dinosaur where he attempted to eat the duck, because he was out looking for food. At the end however he wound up dead in heaven (because of an explosion).
He is a caricature of Jack Benny.
He was voiced by Jack Lescoulie who is a longtime Jack Benny impersonator, and later by Tom Kane (1990-present).