R9-Y9 (or Arnine Wynine) was a R9-series astromech droid owned by Aiddat. He was given to the Jedi Master between 30 ABY and 35 ABY, because Aiddat's other droid, R7-Ch8, was not capable of serving in the advanced StealthX. Aiddat continued to use the R7 unit in other starfighters. However, eventually R9-Y9 was the only droid actively serving the Gran.