Boss

"There were no survivors on Devaron. Everyone was killed, including Master Halsey and his padawan."

- Boss, reporting Halsey's and Knox's deaths to the Jedi

Boss, also known as RC-1138 or Delta-38, was a clone commando who served in the Clone Wars. He was the leader of the Delta Squad and participated in many battles on several different planets.

Witches of the Mist
After a catastrophic battle on Devaron, Boss and his squad searched the Eedit Temple for survivors. After finding the corpses of Jedi Master, Halsey and his padawan, Knox, Boss, and Delta Squad brought their bodies in a casket back to the Jedi Temple on Coruscant for a proper memorial service. Upon landing, Boss, flanked by his squad, stepped out of the shuttle to meet Jedi Masters Obi-Wan Kenobi, Adi Gallia, Plo Koon, and Saesee Tiin. Boss informed them that there were no Republic survivors from the battle on Devaron, leading the quartet to ponder who was responsible for Knox and Halsey's murder.

Armor and Equipment
Like other clone commandos, Boss wore Katarn-class armor, which was designed for better performance in battle. His armor was custom painted with orange markings. Boss was known to carry a DC-17m Repeating Blaster Rifle and a pair of DC-17 Hand Blasters.

The Clone Wars

 * "Witches of the Mist"

Video games

 * Star Wars: Clone Wars Adventures