Almost nothing is known about the man known only as Lo. What is known is part of Hark family legend.
A follower of dark paths of magic and martial arts, Lo made his way to the Night Forest school of martial arts, hidden in the heart of ancient China. He was seeking a powerful technique known only as Night's Stars Attack.
The students at the school refused to give him the information he sought, so he killed them, and challenged the school's master and founder, Hark Ah Lien. She defeated him in single combat, using the Night's Stars Attack to finish him off.