The first can be found atop a large floating tower located to the right of the prison. The second is found south of the last keeper in an open ruin and the last is found within the courtyard of a medium sized fort south of the prison. Once all three are killed, they do not respawn.
They usually carry a filled black soul gem that the Dragonborn can take from their ashes upon death. They can also drop dragonbone weapons, but not their armor. However, if the Dragonborn is at a low level, their weapons may not be lootable.
|Creatures and Enemies (The Elder Scrolls V: Dawnguard)|
|Named Creatures||Arvak • Bran • CuSith • The Forgemaster • Garmr • Naaslaarum • Sceolang • The Reaper • Voslaarum|
|Docile Creatures||Ancestor Moth • Armored Troll • Armored Frost Troll • Bone Hawk • Frost Giant |
Husky • Shellbug • Vale Deer • Soul Wisp
|Hostile Creatures||Ancient Frost Atronach • Chaurus Hunter • Chaurus Hunter Fledgling • Death Hound |
Falmer Warmonger • Feral Falmer • Frozen Chaurus • Frozen Falmer • Gargoyle (Brute • Sentinel)
Legendary Dragon • Revered Dragon • Spriggan Earth Mother • Vale Sabre Cat
|Undead||Boneman • Keeper • Mistman • Wrathman • Nightlord Vampire • Nightmaster Vampire|