Darth Fang at the second battle of Hoth
Darth Fang was a Trandoshan who became a Sith Lord briefly after Darth Vader's death. He was a hunter at first but was chased of Kashykk by the Wookiees. His ship crashed on Korriban. He then opened a Sith tomb. He trained himself using the holocrons of the Sith Lords.
Darth Fang then took control of the remnants of the Empire, and attacked the New Republic fortress on Hoth. During the attack an AT-AT fell next to him causing the floor to fall out from underneath him. He awoke in a cave with boxes of a black liquid, he experimented with it on the Stormtroopers that had fallen as well. After several attempts he created a Zombie that would follow his every command.