Gizor Dellso is an antagonist that appears in the video game Star Wars: Battlefront II, serving as the final boss for the level "Tying Up Loose Ends". He was a Geonosian Separatist Engineer who survived Darth Vader's elimination of the remaining members of the CIS at the end of the Clone Wars.
By the time the Galactic Empire had risen to power, Dellso was still living in exile on Mustafar. However, he'd managed to find a hidden droid factory on the planet, and used it to create his own private army of battle droids in an attempt to rebuild the CIS; in addition, he was working on building an entirely new type of droid as well. This prompted the Empire to send the 501st Legion to Mustafar to shut down the army and destroy the factory. They were successful in doing so, and in the chaos of the battle, Dellso was also killed.