Black Phantom from Thunderbird 6 is a Mysteron agentTo be more precise: he is The Hood brought back to life by the mysterons as one of their agents after Lady Penelope and Parker originally killed him and his accomplice in the previous movie (They shot down The Hoods helicopter).
Brains is a time traveler from an even more distant future.It is known that International Rescue's technology is "years ahead of its time," far in advance of the state-of-the-art in both the military and private industry. On-screen, the justification for International Rescue's secrecy is glossed-over. Logical conclusion: Brains got his advanced technology from the future, and the secrecy is an attempt to avoid damaging the timeline too badly.
Jeff Tracy's sons were all made artificially.Using state-of-the-art cloning technology and the finest genetic codes known to man (including his own), the brothers five were born. Each of them are at the peak of human physical and mental abilities.
Thunderbirds occurs after a population-devastating disaster.In wide shots of roads or cities, there are few cars in use, and no one is simply walking around. In interior shots, there are rarely more than a dozen or so people in a single room. Over the course of a full episode, we probably see only about 20 people.
Thunderbirds is the prequel to the Fallout universe.The show is set in 2065, one year before China invaded Alaska, tipping the precarious imbalance even further and leading to the Great War of 2077. Jeff Tracy left the US when it started becoming too militaristic and set up International Rescue as the last truly philanthropic work before the bombs fell, neutral to the on-going Resource Wars.
Jeff Tracy had a wife.Her name was Lucinda/Lucille, and she endured the birth of the Tracy brothers until she died giving birth to Alan.
Thunderbirds are NOT go!The whole thing was a mere super-dream of Jeff Tracy, thought of during a coma.
Fox Kids is right — the whole show does take place in the Thunder-World.You remember, the goofy teenagers watching over the re-dubbed Thunderbirds guys? Turns out they weren't that far off the mark.
Thunderbirds are real people, not just silly puppets!The show was made as a secret tribute to these unsung heroes.
Thunderbirds are go!What? Someone had to say it!
International Rescue's secret base is Tracy Island.Think about it, guys. IR has to be based somewhere, and the Tracys are known for being secretive. They're rich ex-astronauts. Who better to go into the rescue business? Jeff Tracy would mastermind the operation, while his sons operate the Thunderbirds. Think about it. It makes perfect sense!
There was a sixth Tracy son, Walter.