Trivia: In the opening credits, you see a picture of Thunderbird 3 in the background, but Alan Tracy is not flying the craft. He in is fact flying Thunderbird 2 with the steering wheel upside down.
Trivia: The Hood's name was never used in the TV series. It was revealed in spin-off media and promotional materials.
Trivia: Each episode's opening credit scene would feature some highlights of the episode. Gerry Anderson would later use this gimmick in "Space: 1999" and "Space Precinct".
Trivia: International Rescue's headquarters was never actually referred to as "Tracy Island" throughout the whole series.