The undead swarm is very simply organized, consisting only of manipulators and the manipulated. The Lamiae and Merrows themselves created the undead, but have no misgivings about expending them in order to survive or accomplish a goal.
The undead can only follow the simplest instructions, and thus present very little threat when alone. In battle, however, the undead are so numerous that losses are of no concern, and storm tactics tend to prevail over sophisticated strategies.
These artificially created beastmen (chimeras) command the undead swarm in battle. Although their numbers are few, the Lamiae are extremely cunning, and often confound the Imperial Army with feint attacks and other deceptive strategies. Lamiae always send their troops before them in battle as they decimate their opponents from afar with powerful magic and archery.
A close relation of the Lamiae, the Merrow is a type of amphibious chimera. Although they reside in the Cyan Deep, Merrows occasionally respond to the Lamiae's requests and venture to the scene of battle accompanied by hordes of undead raised from watery graves. Merrows can also use their enchanting voices to draw in even the most experienced sailors.
Although qutrub only have a few shreds of their will remaining, they have pledged their undying loyalty to the Lamiae. Still afflicted by the desires of the living and possessing surprising strength, the qutrub are often utilized in raids on Al Zahbi. Their short swords can be used to devastating effect.
These undead skeletons are completely controlled by the curse of the Lamiae. Draugar possess no emotion and feel no pain. They merely fight until they can no longer move, but are capable of little more than the most basic behavior. Their ranks are easily replenished, so draugar are often used as a stalling tactic.
These hulking mechanoids are unique amongst the legions of the Undead Swarm as they are the only inorganic weapons in the Swarm's arsenal. These strange contraptions can fall apart as they fight, often discarding whole limbs during combat.