- "As I was saying, before I was rudely interrupted, Dr. Gubacher is going to equip each of you with a tactical upgrade specially designed for this mission."
- ―Colonel Meebur Gascon, to D-Squad
Gubacher was a male Parwan doctor who served the Galactic Republic during the Clone Wars. He was an artificial intelligence specialist and operated a research and development lab in the Jedi Temple on Coruscant, working closely with the Jedi in designing spy droids. Gubacher was a part of the Republic's Strategic Advisory Cell, and worked with many other members of the Cell in constructing a massive mobile battle station for the Republic, which would later be known as the Death Star.
In the second year of the Clone Wars, Gubacher outfitted the astromech members of D-Squad, who were to steal an encryption module from a Separatist cruiser, with various upgrades to aide them on their mission.
At the end of the Clone Wars the Republic was transformed into the Galactic Empire, which continued work on the battle station project, which Gubacher was still involved in during the early years of the Empire's reign.