The Sun-Eaters are a clan of vampires who worship Sithis. They overran the Teeth of Sithis temple in Murkmire and killed most of the nisswo custodians that inhabited it, while keeping a few alive for sustenance and for other nefarious purposes.
The Disciple of Molag Bal wields hellfire as their weapon, striking down all who oppose them with their lords favoured weapon. They focus on all things fire related, as is fitting with the preoccupation of the lord they serve.