|Light Novel||Overlord Volume 3|
|Anime||Overlord Episode 10|
True Vampires (真祖) are a powerful vampires originating from YGGDRASIL.
True Vampires are hideous creatures that are more repulsive looking than normal vampires. They have gaping jaws that stretch wide enough to form a semicircle, canines that reach past their chin, and crimson eyes glint with the color of blood. Their feet and hands are equipped with razor sharp claws that are over a dozen centimeters long.
True Vampires are vicious and use their monstrous proportions to their advantage. Using their lamprey-like mouths, they are capable of sucking a human of its blood dry within minutes until it becomes a mummified corpse. Possessing speed even beyond that of normal vampires, escape from a True Vampire is near impossible. They are capable of creating lesser vampires that has the intelligence that rivals a normal human being.
- Shalltear Bloodfallen is a True Vampire, but her appearance was altered to resemble a normal vampire.