Lythelus was a priest of Nocturnal, whose place of worship was located at the Twilight Sepulcher. He was one amongst many other priests. He was assigned as a mentor to Nystrom, who deceived him into believing he wanted to become his pupil and worship Nocturnal. Lythelus inadvertently told him in riddles the trials one would have to face in order to get to the Inner Sanctum of the Twilight Sepulcher, where Nystrom and his companion Anders thought the treasure of the temple was located.
- The Elder Scrolls V: Skyrim (Mentioned only)