Hugo l'ippopotamo

Burl Ives

Narrator - Vocalist (voice)

Robert Morley

Sultan (voice)

Paul Lynde

Aban-Khan (voice)

Jesse Emmett

Royal Magician (voice)

Ronnie Cox

Jorma (voice)

Percy Rodriguez

Jorma's Father (voice)

Len Maxwell

Judge (voice)

Marie Osmond

Vocalist (voice)

Jimmy Osmond

Vocalist (voice)

Don Marshall

Mr. M'Bow-Wow - Additional Characters (voice)

Frank Welker

Special Vocal Effects (voice)

Nancy Wible

Special Vocal Effects (voice)

Jerry Hausner

Special Vocal Effects (voice)