Mace was a Sith Warrior who served as an apprentice to the Sith Lord Tahm of the resurgent Empire. A bald and tan-skinned Human male, Mace made use of two orange-bladed lightsabers in combat, and was proficient in casting violet lightning at his opponents. Mace, his master, and his fellow apprentice Harp'r were killed on the Sundari Flatlands on Balmorra during the battle for the planet's freedom in 3642 BBY.