Eye-Oh-Ninety-Eight-Dee was the designation of a droid processor of the Galactic Empire. The Sith Lord Darth Vader utilized the droid brain and several others to take control of the M.A.R. Corps, a team of cyborg rebels, with Eye-Oh-Ninety-Eight-Dee being implanted into a human cyborg. During a skirmish with former governor Tauntaza, the droid brain was disconnected from the cyborg, allowing them a moment of freedom in which they turned against Vader. The Sith used the Force to reconnect the droid brain, which thanked him.