R2-X9
this astromech droid was part of the droid pool which worked at the Mon Calamari shipyards, during the height of the Galactic Civil War. It was R2-X9 which discovered Ral Shawgrim's escape from the facility, when an unauthorized shuttle blasted away from the shipyards. Thanks to R2-X9, the plans for the T-65 starfighter which were carried by Shawgrim were recovered.