Vergonagan was a male Wookiee who made a number of weapons for Jedi Jacoby, whom he did not know much about. He had seen Ven Queso but did not know that he was a Yiben. Vergonagan had a robotic eye and arm, and was the nemesis of the droid General Grievous. He had Grievious were in many battles and came to hate each other, which many observers remarked could be felt when they fought.