The Shadow Legion is a division within the Imperial Legion. It consists of the Imperial Legion Battlemages, and was recorded to have used the Battlespire for training, prior to its destruction. The Legion is further located at the Arcane University, where the Battlemages serve as guards. During the events of Skyrim, two battlemages can be spotted at Helgen, fighting against Alduin. An ex-legion Battlemage, Madena, can be found in Dawnstar.
- It is unknown if the Shadow Legion is considered a separate Legion.