Mel Blanc as Heathcliff / Spike (voice)

Donna Christie as Iggy (voice)

Peter Cullen as (voice)

Jeannie Elias as Marcy

Stan Jones as Wordsdworth

Marilyn Lightstone as Sonja / Mrs. Nutmeg

Danny Mann as Hector / Mr. Schultz

Derek McGrath as Lefty / Knuckles / Muggsy / Spike / Mr. Woodley

Marilyn Schreffler as Mr. Woodley's Secretary

Danny Wells as General / Announcer

Ted Zeigler as Mr. Nutmeg / Mungo