Cast[]
- Frederick Henry as Sonic
- Catherine Barkley as Cream
- Major Alessandro Rinaldi as Tails
- Dr. Emerich as Rotor the Walrus
- Miss Van Campen as Amy Rose
- Helen Ferguson as Cosmo
- Bonello as Heavy
- Colonel Valentini as Big the Cat
- Aymo as Silver
- Passini as Bomb
- Major Stampi (as Jose Nieto) as Ari
- Captain Bassi (as Georges Brehat) as Knuckles
- Mrs. Zimmerman as Princess Sally Acorn
- Lieutenant Zimmerman as King Acorn
- Delivery Room Nurse as Bunnie Rabbot