Sergeant Kreel, designated Agent 5241, was an undercover stormtrooper and SCAR trooper of the Galactic Empire, serving in the 501st Legion under the direct command of Darth Vader. He operated as the gamemaster in Grakkus the Hutt’s arena on Nar Shaddaa. He was tasked with training new candidates to fight in the arena, including Luke Skywalker. During Skywalker’s arena fight with Kongo the Disemboweler, Agent 5241 contacted the Empire to inform them that Skywalker was on Nar Shaddaa. After his mission on Nar Shaddaa was complete, Kreel was given command of an elite group of SCAR troopers, designated Task Force 99.