Arex

Arex was a Jedi Training Droid utilized by the Jedi Order since the time of the Old Republic to aid in protecting and training individual Jedi who took the Barash vow and retreated to the River Moon of Al'doleem. During the Clone Wars, Arex looked over and aiding in training Jedi Master Kirak Infil'a when he took the Barash vow and continued to aid the old Jedi Master up until his destruction at the hands of the Sith Lord Darth Vader after order 66.

"I have spent time with many Jedi here, over the years, and I would like to believe I have absorbed some small piece of their wisdom."
-Arex to Kirak Infil'a