Together, the three formed a triumvirate with Traya at its head and her other apprentice, Darth Sion, as the third. He accepted her offer and came under her apprenticeship at her Dark Jedi academy, choosing to wield the dark side of the Force as his weapon, and over time became one of three concurrent Dark Lords of the Sith. In his pain he became a wound in the Force and was found by a seeker of such things, Darth Traya, who told him that she could teach him to feed his hunger. The experience of the mass shadows made him 'hunger' for Force energy, and the affliction began to ravage his body. He lost everything during the Mandalorian Wars, surviving the activation of the Mass Shadow Generator at the Battle of Malachor V.

Darth Nihilus was a Force-sensitive Human male who lived during the Dark Wars.