|Born||20th Oct 2040|
|Films|| Thunderbirds are Go|
|Role|| Space Monitor|
|Voice Actors||Ray Barratt|
(Series 1 & 2)
Keith Alexander(Thunderbird 6)
Being the solitary monitor aboard Thunderbird 5, John often seems distanced from his fellow siblings. In Operation Crash Dive, even though he is on Tracy Island, he does not seem to join in with his brothers at the shooting range. As the second eldest John seems to be quite mature, he is described as the quietest and most intellectual of the Tracy brothers.
John is named after Astronaut John Glenn who was the first American to orbit the Earth, on the Friendship 7 Mercury flight.
John Tracy on Thunderbirds wiki: http://thunderbirds.wikia.com/wiki/John_Tracy