The Dark Lord

"The first vampire came from Molag Bal. She.....was not a willing subject. But she was still the first." - Serana

Taking over the Volkihar Clan was the first step in the Dragonborn's road to rule Tamriel as a Vampire Lord. With Harkon dead, the remaining Vampires submitted and pledged their loyalty to their new lord, the Dovahkiin. Various feral vampires living within the caverns and underground sewers flocked to Castle Volkihar the moment they overheard the demise of the cunning Lord Harkon, many would soon become the first hand of the Dragonborn, acting on his behalf and rooting out all mortal kind.