Yogar Lyste was an Imperial officer stationed on Lothal. He oversaw inventory and distribution of supplies and weapons for the Empire on the Outer Rim planet, and had an encounter with a small band of rebels that dared to steal Imperial cargo.

Formerly Supply Master, Lyste was promoted to Lieutenant within the Imperial ranks during his time onLothal. Lyste was one of the first Imperials on the planet to encounter theGhost crew. Later, he was charged with hosting PrincessLeia Organa during a relief mission to theEmpire-occupied planet, which would become a great embarrassment for the officer. Leia, secretly working for the rebellion, tricked Lyste and his forces into losing her three cruisers to the Ghost crew. He even lost track of his shuttle, which was destroyed during the operation. Despite his newfound rank, Lyste could still be outsmarted.

As the rebellion grew, so did its tactics -- including the use of spies.Grand Admiral Thrawn became convinced that a rebel spy, code name Fulcrum, was in his midst. He was right; Fulcrum wasAgent Kallus, and he had been secretly helping the rebellion from within the Empire. As the hunt for Fulcrum intensified, Kallus set up Lyste to take the fall. The ISB Agent used Lyste's security device, along with subtle manipulation, to implicate the lieutenant as the traitor. It seemed to work...but Thrawn secretly knew the truth.
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