Be wary, as finding a Thrall ensures that a Vampire will be nearby. Based on their armor and their ability to wield weapons and, occasionally, magic, it can be theorized that they are former bandits or adventurers. Even though the thralls seem to have no free will, they appear to have retained some measure of greed. For instance, in Laid to Rest, the Dragonborn may see and hear a vampire thrall searching bodies.
In the new Dawnguard expansion, if the Dragonborn decides to become a Vampire Lord, more insight into how thralls can be made is revealed. In Prophet, the Dragonborn is tasked with creating a thrall from a Moth Priest to force him to read an Elder Scroll.
- The animation for creating a Vampire Thrall (as potentially seen in Dawnguard) is the standard feeding animation.