You might also be looking for the 1965 or 2015 incarnations.
Brains is a character from the live-action Thunderbirds (2004 Movie) released in 2004. He has a son called Fermat and he is the designer and creator of all of the Thunderbird craft.
- He was the first International Rescue victim to be mind controlled by The Hood.
- The Hood says to him "Like a puppet on a string" which is a reference to the original series.
- He has the same stutter as the original Brains. At a crucial moment in the film he dropped the stutter and yelled "damn it Jeff, wake up!". He resumed his stutter afterwards.