The Grand Inquisitor was a male Pau'an who formerly served as a Jedi Temple Guard. However after Order 66, he joined the Empire and as of the 15th year of the Empire's reign held the title of Grand Inquisitor of the Inquisitorius of the Galactic Empire. The Inquisitor hunted and eliminated Jedi that had survived the destruction of the Jedi Order. Trained in the ways of the Force by Darth Vader, he was tasked with converting or destroying Force-sensitive children, as well as Jedi who could train them, before they could become a threat to the Empire. To accomplish his tasks, the Inquisitor studied the records of the Jedi Temple, giving him insight into the Jedi and their fighting style. As a result, he was a deadly foe for any surviving Jedi.
After being informed of the actions of a group of rebels on the Outer Rim world of Lothal, the Inquisitor took an interest in both killing Kanan Jarrus and converting his apprentice, Ezra Bridger to the dark side. His first attempt came when rumors of Jedi Master Luminara Unduli's survival led the rebels to the Imperial prison known as the Spire where the Empire was allegedly holding her. However, it was a ruse designed by the Empire to lure surviving Jedi into a trap. Although the Inquisitor failed to capture the two Jedi, he began his hunt for the two and headed to Lothal to track them. During the fifteenth anniversary of the Empire's birth, the Inquisitor came face to face with the two Jedi once again. During a confrontation on Fort Anaxes, the Inquisitor defeated Jarrus and tried to turn Bridger to the dark side, but the Padawan used his power to summon a giant fyrnock, who distracted his opponent long enough for the Jedi to escape once again.
Weeks after the confrontation on Fort Anaxes, Grand Moff Wilhuff Tarkin arrived on Lothal to take over the track for the rebels. Warning the local officials that failure would now have consequences, Tarkin had the Inquisitor execute two Imperial officers for their constant failure to stop the rebels. On Tarkin's orders, the Inquisitor and ISB Agent Kallus set a trap in which they successfully captured Kanan Jarrus. Interrogating the Jedi about his knowledge of a larger rebellion, they failed to break him and Tarkin ordered that he be transferred to an Imperial facility on Mustafar. When the rebels staged a rescue, Bridger managed to break his Master out of his cell aboard Tarkin's flagship, the Sovereign. The Inquisitor confronted them in the ship's reactor room where, after initially winning and nearly killing Bridger, Jarrus turned the tide by embracing the full power of the Force, allowing him to defeat his enemy. Hanging onto a walkway above an exploding reactor, the Inquisitor warned Jarrus that something far worse would come for all of them because of his defeat. Knowing the price he would have to pay for his failure, he let himself fall to his death into the exploding reactor.
The Grand Inquisitor's demise was seen as an opportunity by the surviving Inquisitors, who soon took up his hunt for the Rebels. A vision of the Grand Inquisitor in his guise as a Jedi Temple Guard was later used by Yoda to test Kanan and help him see that he couldn't save Ezra, only do his best to teach him. Once Kanan realized this, the vision of the Inquisitor proclaimed Kanan a Jedi Knight before revealing himself and urging Kanan to flee, as the Jedi Temple in which they had faced each other had been discovered. Illusions of the Inquisitor and other Temple Guards then appeared to confront the Fifth Brother and Seventh Sister, allowing Kanan, Ezra, and Ahsoka Tano to make their escapes.
- His minifigure comes with a new lightsaber hilt mold to reflect the one he carries in the TV series which can spin around.
- He does not come with a special headdress to express his elongated head.
- His head is white, despite the fact that it is more grey in the TV Show.
- He was voiced by Jason Issacs, who also portrayed Lucius Malfoy.
- He is exclusive to one set.