Date destroyed: Between 3 ABY and 4 ABY, Executor
Model: Jedi training droid
Class: Training droid
Sensor color: Orange, later red
Plating color: Gray
Brawling Parry: 4D
Melee Combat: 4D
Melee Parry: 4D
Jedi Lore: 3D
Droid Programming/Repair: 3D
Lightsaber Repair: 4D
Humanoid Body (two arms, two legs)
Additional Arms (two arms attached to back of torso)
Two visual and auditory sensors - human range
Remote Control Function - Can still control severed body parts as long as they remain within close range of his droid brain.
Description: Arex was a Jedi training droid who spent many years with Jedi on Al'doleem, a moon in the galaxy's Mid Rim. During the early stages of the Great Jedi Purge, Arex was present on the moon with Jedi Master Kirak Infil'a and was tasked by Infil'a with preparing the mountains defenses when something dark was approaching. When Infil'a confirmed it was a Sith, the droid ran to intercept him, but before it could, Vader tooks its weapon and threw the droid off the mountain. After Vader was thrown off the mountain by Infil'a, he landed near the droid, who had survived. Arex then told Vader that he was defeated, but Vader responded by crushing the droid, and using its parts to repair himself. Arex ultimately survived, and between 3 ABY and 4 ABY, was among a number of droids assembled by the Droid Crush Pirates of Bestoon to take out Vader. When they confronted Vader on Ringo Vinda, Arex believed that because Vader had many of their parts installed on them, they could be able to communicate with them if they got close enough to the Sith. They attempted to carry it out, but then began to attack the droids attacking Vader, with ZED-6-7 revealing that it had been a setup all along. The destroyed droids were then rebuilt and began to follow the Sith.