Hiram "Brains" Hackenbacker
A child prodigy, "Brains" as he is affectionately known, is the engineering genius behind the design of the Thunderbirds machines. He was discovered by Jeff Tracy during the early days of setting up his engineering empire. "Brains" stayed on with International Rescue, when Jeff retired from his company directorship. As Mr Hackenbacker, he also takes freelance design work for aircraft manufacturers.
Be careful of your footing Wednesday won't you!