TIE Advanced x1
the original series of prototypes for the TIE Advanced, the x1 was the most successful of the TIE prototypes built by Sienar Fleet Systems, and although it did not make it to production, many of its advancements did. The x1 had a custom-built fuselage which features enhanced armor plating, and expanded rear deck, and matching bent wings. It wasn't as maneuverable as the other TIE Fighter designs, but speed was slightly faster. Like most TIE ships, the x1 lacked a life-support system, but it did have modest shield generators and a hyperdrive. The x1 saw limited production. Darth Vader received one of the first x1 ships, while others went to elite squadrons for testing. SFS could not bring the fighter's cost down, so the Empire opted not to purchase the x1 in quantity. Instead, the Empire chose the TIE Interceptor, which incorporated many of the x1's advances but on the basis TIE Fighter frame and at a much cheaper cost. In the decades after the fall of the Empire at Endor and the negotiation of peace between the New Republic and the Imperial remnants, these ships were decommissioned. Lando Calrissian picked up a number of them for use in the Lando's Folly asteroid field.