His voice was created by actor Mel Blanc, heavily patterned after the character of Senator Claghorn, a blustering southern politician who was a regular character on the Fred Allen radio show. Senator Claghorn was created and voiced by radio comedian Kenny Delmar[?]. Foghorn Leghorn also used a number of Claghorn's catch phrases, like "That's a joke, son". The references to Senator Claghorn was obvious to much of the audience when the Foghorn Leghorn cartoons first premiered.
A leghorn is a breed of chicken, and foghorn describes the character's piercing, monotonous voice.
All of the motion picture Foghorn Leghorn cartoons were directed by Robert McKimson.
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