Thunderbirds Are Go

The "cast" (featuring co-writer and producer Sylvia Anderson as the voice of "Lady Penelope") is introduced in the slick opening to the first MGM ”Supermarionation" feature based on the hit TV Series of the same name, Thunderbirds Are Go, 1968.

Secret Agent Lady Penelope (voiced by co-creator Sylvia Anderson) is assigned to support astro-entrepreneur Jeff Tracy (voiced by Peter Dyneley) and the Mars mission, meeting Travers (voiced by Paul Maxwell), in the first feature based on the puppet TV series, Thunderbirds Are Go, 1968.

The impressive yet interminable launch of the Zero-X mission to Mars is underway, via "Supermarionation,” in the first feature by Gerry and Sylvia Anderson, based on their TV series, Thunderbirds Are Go, 1968.