Harold is Billy's father and Gladys's husband. He is an overweight man with a large, bulbous nose and a lofty black pompadour, which houses his brain. Harold resembles his son in appearance and personality, sometimes displaying even more stupidity than Billy himself. Harold's employment is unknown and varies from episode to episode (he reveals in the Big Boogey Adventure that he gets fired all the time, for even the smallest of dumb acts). Despite his low IQ, Harold was accepted in Harvard and was a former Navy Seal. Harold is also known to be afraid of Santa Claus. Harold was much more intelligent in the first season but has grown in stupidity in recent seasons.