The Inquisitorius are a mysterious group in Star Wars. Made up of former Jedi, they serve the Empire to hunt the few remaining Force-users in the galaxy. They wield their own unique spinning double-bladed lightsaber and are commanded by none other than Darth Vader. But one Inquisitor stands above the rest for being the most mysterious of all, and that's Marrok. First introduced in Ahsoka, Marrok doesn't hold the typical Inquisitor title of Brother or Sister, and their identity is still unknown.
Source：https://www.cbr.com/marrok-similarity-tales-of-the-jedi/
