Erstin Deez

Erstin Deez was a Sergeant in the Imperial Royal Guards and later, being the Champion of the Sovereign Protectors. He was also the short-term teacher of Carnor Jax. Deez was known for getting Emperor Palpatine and his apprentice, Darth Vader out of the Imperial-class Star Destroyer Perilous, on the skirmish on Ryloth. After the Skirmish, Erstin Deez was made an Imperial Sovereign Protector, and also made the title of Champion of the Imperial Sovereign Protectors.

Skirmish on Ryloth
Deez accompanied the Emperor and his apprentice Darth Vader on a visit to the planet Ryloth. When the Perilous was attacked and destroyed above Ryloth by the rebellious Free Ryloth movement, Deez evacuated with the Emperor and Vader in a shuttle, but their craft crash-landed on Ryloth, leaving them stranded in the wilderness. Deez, Vader, Palpatine and a captain of the Royal Guard, made their way across the terrain searching for civilization, encountering a nest of native lyleks which they destroyed at the cost of the captain's life. They then came upon a Twi'lek village, where they were welcomed and rested before being attacked by Free Ryloth movement members. The trio fought off the attackers, aided by Imperial reinforcements who soon arrived to collect them.

Imperial Reign
Erstin Deez became the Champion of the Imperial Sovereign Protectors after the past skirmish on Ryloth. He trained Carnor Jax, into being the elite of the Royal Guards. However, Deez caught that Jax wasn't too much of a student and that Kir Kanos is still better than him.