Francis Matthews

Captain Scarlet (voice)

Ed Bishop

Narrator / Captain Blue (voice)

Donald Gray

The Mysterons / Colonel White / Captain Black (voice)

Cy Grant

Lieutenant Green (voice)

Shane Rimmer

Sergeant (voice) · Mason (voice)

Sylvia Anderson

Receptionist (voice) · Melody Angel (voice)

Janna Hill

Intercontinental Airlines Tannoy (voice)

Paul Maxwell

Supreme Commander of Earth Forces (voice) · World President (voice)

Elizabeth Morgan

Nurse (voice)

Charles Tingwell

Fairfield (voice)

Jeremy Wilkin

Captain Ochre / 2nd Medical Student / Radiographer (voice) · Human Captain Black / Delta Garage Attendant / Radio Announc

Martin King

Orson / Speech Intelligence Decoder (voice)

Neil McCallum

2nd Policeman (voice)

Gary Files

Conrad Olafson (voice) · Eddie / Trapper / Big Bear Sentry (voice)

David Healy

Frazer (voice) · Geiger Operator / Guard Voice 2 (voice)

Lian-Shin Yang

Harmony Angel (voice)