Full Cast — Thunderbirds (1965–1966)

David Graham

Gordon Tracy / Brains (voice) / Parker / Wilbur EDandridge III / Captain Hanson (voice)

Shane Rimmer

Reactor Control Assistant (voice) / Scott Tracy (voice)

Peter Dyneley

Jeff Tracy (voice)

Christine Finn

Tin-Tin Kyrano (voice)

Sylvia Anderson

Lady Penelope Creighton-Ward (voice)

Ray Barrett

Colonel Harris / Colonel Benson (voice) / John Tracy (voice) / Atom Sub Reefer Captain / TV Reporter (voice) / Dr. Orchard (voice) / Jansen (voice) / Deborah, Duchess of Royston / Brophy / Fireflash Co-Pilot / Percy's Friend (voice)

Matt Zimmerman

Alan Tracy (voice) / Lieutenant Jensen (voice) / TV Reporter (voice) / Franklin / Gutierrez (voice) / Hector McGill (voice) / Atom Sub Reefer Lieutenant (voice) / Banino / Macklin / Foreign Lieutenant (voice) / Press Officer / 2nd Reporter (voice) / 2nd Croupier / Hendricks (voice)

David Holliday

Virgil Tracy (voice)

Jeremy Wilkin

Virgil Tracy (voice)

John Tate

Maxie / Scheiler / Foreign Colonel (voice) (uncredited) / Blackmer (voice) (uncredited) / McColl / Security Guard (voice) (uncredited) / Frank Hooper / Sir Harry (voice) (uncredited) / Solarnaut Camp (voice) (uncredited) / Various Characters (voice) (uncredited)

Charles Tingwell

Paul Maxwell