Ghasts
These undead corpses will soon become wights as their bodies decompose and the resultant gas and pus build up within their bowels.  Noxious pus oozes out of their pores and a single touch will render most units paralyzed. 

Strengths:  They are immune to paralysis and will usually win a one-on-one battle with most melee units.  They're the fastest of all the undead units, but that's kinda like being the worldest tallest midget.

Weaknesses:  They are still slower than most of your units and so you can run and turn every so often to pick them off.

Vitality:  2.195
Damage per hit:  .25 - .395
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