The technical man, actually listed as an Engineer who designed and maintained the vehicles, and wore specs, was called (Brains). He was not a member of the Tracy Family but clearly a contracting employee and cast member.
Toyama Thunderbirds was created in 2007.
The Fabulous Thunderbirds was created in 1974.
Carolina Thunderbirds was created in 1982.
UBC Thunderbirds was created in 1915.
The Hood - Thunderbirds - was created in 1965.
Thunderbirds machines was created in 1965.
Albuquerque Thunderbirds was created in 2005.
Albuquerque Thunderbirds ended in 2010.
Vancouver Thunderbirds was created in 2005.
The Production Budget for Thunderbirds was $55,000,000.
Seattle Thunderbirds was created in 1977.
Brains - Thunderbirds - was created in 1965.