- "I am Lok Durd of the Separatist Alliance!"
- ―Lok Durd introducing himself to the Lurmens
During the war, he created an experimental defoliator, an artillery radiation weapon that could theoretically completely wipe out any organic matter while leaving machinery unharmed. Durd planned to do an experiment of the weapon on the planet of Maridun upon his discovery of a small Lurmen colony there. After landing on the planet and setting up a base camp, Durd tested the defoliator on a pair of battle droids successfully. He then tried to use the weapon on the colony to impress Count Dooku, the leader of the Separatist movement.
However, he was interrupted by Jedi Knight Anakin Skywalker, his Togruta apprentice Ahsoka Tano, and Twi'lek Jedi Knight Aayla Secura, who had crash landed on the planet prior to Durd's arrival. Using shield generators they had captured from the Separatist base camp, the Jedi were able to block Durd's defoliator by surrounding the Lurmen village with a deflector shield, and Durd was captured by Anakin following a brief battle. Lok Durd was also present when Senator Amidala and Senator Clovis came to Cato Neimoidia.