In the mirror universe, L'Haan was a female Vulcan. In the 23rd century, she worked as a law enforcement officer on Vulcan, serving the Terran Empire. In 2286, she joined the Vulcan Resistance through a chain of mind-melds sharing the vision of the primary universe. She immediately sought out sympathizers with whom she could share the vision. Three days after being recruited, she approached V'Nem, a professor of the Vulcan Science Academy. She briefly touched his mind, and realized that V'Nem was really a Romulan spy. She was forced to kill V'Nem, but was vindicated due to her position as an officer of the law. (TOS - Mirror Universe novel: The Sorrows of Empire)