Dungeon Keeper 2Edit
The only undead creatures in Dungeon Keeper 2 are Skeletons and Vampires. Aside from their immunities, another feature of these creatures is the fact that they never get knocked unconscious, and therefore cannot be imprisoned or converted. It also means that one should be very careful when trying to train them in a Combat Pit. Skeletons simply shatter when they run out of health, and Vampires either disintegrate into a cloud of bats (if they are level 1 or defeated by a Monk), or resurrect one level lower in a Graveyard.