Peter Dyneley

Character: Jeff Tracy / Professor Heinz Bodman (voice)

Shane Rimmer

Character: Scott Tracy (voice)

David Holliday

Character: Virgil Tracy (voice)

Matt Zimmerman

Character: Alan Tracy / TV Reporter (voice)

David Graham

Character: Gordon Tracy / John Tracy / Brains / Kyrano (voice)

Christine Finn

Character: Tin-Tin Kyrano / Grandma Tracy (voice)

Jeremy Wilkin

Character: Virgil Tracy / Operator Power / Tom (voice)

Ray Barrett

Character: Colonel Harris / Colonel Benson / Rick O’Shea (voice)

John Tate

Character: Solarnaut Camp (voice)

Charles Tingwell

Character: International Space Control Commander (voice)

Sylvia Anderson

Character: Professor Marshall (voice)