Lady Midnight is a powerful, but mysterious entity who has been proliferating worshippers across Ahlim, particularly Rzeka. The Warriors of The West have heard much about her from a variety of sources, but her true identity and goals are still unclear. She is supposedly The First Warlock, a scholar of ancient House Valeng. She is also possibly Calamity, who almost destroyed Rzeka centuries ago.
What is known is that she has the alliance of many dangerous figures, such as The Crimson Matron, The Demonlords Orcus and Zuggtmoy, and mortals like Evangeliza. She is supposedly in opposition to Demogorgon and his demonic followers, but is certainly not an ally of The Annerians.