Sylvia Anderson

Gerry Anderson

Rasmus Hardiker

Scott Tracy / Alan Tracy (voice)

Chris Jarman

The Mechanic / Hutch (voice)

David Menkin

Virgil Tracy / Gordon Tracy (voice)

David Graham

Parker / Vic (voice)

Sandra Dickinson

Grandma Tracy (voice)

Jenna Coleman

Baines (voice)

Adjoa Andoh

Colonel Casey (voice)

Thomas Brodie-Sangster

John Tracy (voice)

Angel Coulby

Kayo (voice)

Kayvan Novak

Brains / GDF Commander (voice)