At the height of his career, Imperial Grand Admiral Thrawn served as commanding officer of the 7th Fleet, the flagship of which was the Imperial I-class Star Destroyer Chimaera. A few years after the start of the Galactic Civil War, when Governor Arihnda Pryce requested a strong commander capable of defeating the rebels on Lothal, Thrawn accepted the challenge, intending to dismantle the rebellion one piece at a time. 
Deployed to the Lothal sector, he sought to defeat the rebels led by Captain Hera Syndulla. During his leadership of the 7th Fleet, Thrawn proposed and staunchly advocated for a new starfighter-bomber: the TIE Defender, which was to be initially manufactured on Lothal before being mass-produced throughout the galaxy. Following the Battle of Atollon, Emperor Palpatine summoned Grand Admiral Thrawn to his palace to undertake a mission with the Emperor's Sith apprentice Darth Vader, whom Thrawn once knew as the Jedi Anakin Skywalker. Palpatine considered Thrawn and Vader his two most useful servants and believed his mission would require the unique talents and knowledge of both men.
In the ensuing mission, Thrawn's fleet worked with Vader's First Legion and ultimately rescued several Force-sensitive Chiss girls held captive by the warlike Grysk species. Soon thereafter, Thrawn took on a mission to defend the supply lines of Project Stardust from apparent losses to electronics-eating grallocs. The true culprits of the losses were the treasonous Grand Admiral Balanhai Savit and, separately, a force of Grysks seeking to conquer Imperial space and perhaps control the Death Star. After exposing Savit's treason and defeating that Grysk force, Thrawn resumed his task of eliminating Syndulla's rebel cell on Lothal. Syndulla's rebels confronted Thrawn's forces with the intention of liberating Lothal once and for all. During the battle, a flock of purrgil came to the aid of Jedi Padawan Ezra Bridger and inflicted heavy damage on the Seventh Fleet. Thrawn was on the bridge of his command ship when the creatures surrounded the Chimaera and pulled it into hyperspace, taking both Thrawn and Bridger to the extragalactic planet Peridea, where they would remain in exile.
In the years following Imperial Grand Admiral Thrawn's disappearance, both the Emperor and Vader were killed at the Battle of Endor, the Empire was decisively beaten at the Battle of Jakku, and the Alliance to Restore the Republic was reorganized into the New Republic. In spite of his vanishing and unconfirmed death at Lothal years prior, former Jedi Ahsoka Tano started hearing whispers of Thrawn's return and began searching for the last missing Grand Admiral in 9 ABY, which led her to face Thrawn's protégée Morgan Elsbeth. Eventually with the help of Elsbeth and the Great Mothers, Thrawn would escape Peridea, though unbeknownst to him, so did Ezra Bridger. Free from his exile, Thrawn and the Great Mothers traveled to the Nightsister homeworld of Dathomir. Even in his absence, Thrawn's talents benefited the New Order. His knowledge of the Unknown Regions proved essential to loyalists that retreated from the known galaxy, helping them survive in unexplored space where they eventually formed the First Order, a major part of Emperor Palpatine's Contingency plan.
This is a PCB for a custom personality chip and is designed to be used with droids from the Droid Depot at Galaxy's Edge.