The individual known as Gearbox, whose real name was Bex Kolos and who had defected from the Republic SpecForce, was the mind behind the walker designated Project B. He engineered it within a bunker situated in the Glarus Valley of the planet Alderaan. In the course of the SpecForce Incident, Havoc Squad, acting on intelligence provided by Markus Thul, located Gearbox at this very bunker, where they ultimately killed him subsequent to overcoming the walker.
The bunker used by Gearbox is featured in the Trooper class mission called "The Future of War," which takes place on Alderaan within the video game Star Wars: The Old Republic, a title that saw its initial release in the year 2011.