}}

These creatures are what [[Dark Vessel]]s transform into, if they successfully summon a demon into their own bodies. Activated Vessels are mutated, half-demonic things who fight furiously and move very quickly. It's a good idea to kill off the Dark Vessels before they can activate, if at all possible.

List any "character" monster, such as King Leoric for skeletons and the Butcher for Overlords.

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== Background ==