Thundarr, the Barbarian

Henry Corden

Ookla the Mok, Gemini, Rider, Oookla the Mok, Caroc Leader, Captain Weelos

Robert Ridgely

Thundarr, Henchman, Manhat Dweller, Thundarr the Barbarian, Elder

Nellie Bellflower

Princess Ariel, Dr. Craft, Manhat Dweller, Circe

Joan Van Ark

Captain Corden, Cinda, Voice of Crystal, Cinda, Crystal

Alan Oppenheimer

Mindok The Mind Menace, Muragg, The Old Wizard, Mindok the Mind Menace, Morag

Nancy McKeon

Tai, Tye

Keye Luke

Additional Voices, Zevon, Infernus, Kublai

Alan Dinehart

Ponce

Julie McWhirter

Straia

Hal Smith

Simius

William Woodson

Argoth of a Thousand Eyes, Crom, Traffic Cop, Lord Argoth