Adanar was a male Senior Trooper in the Brotherhood of Darkness army during the New Sith Wars against the Galactic Republic. He joined the Sith army in 1003 BBY, on the same day as Dessel, a Human who later became his friend. After basic training, Adanar was placed in the Gloom Walkers unit. He first saw combat in the Battle of Kashyyyk and later fought in the Battle of Hsskhor, a confrontation that left him emotionally scarred and traumatized. Over the next year, Adanar fought in scores of battles on many worlds. In 1002 BBY, he participated in the Battle of Phaseera, where Dessel mutinied by knocking out their commander, Lieutenant Ulabore, and taking control of the unit. Adanar readily supported Dessel's action.