Some mechanical constructs or magical monstrosities are so bizarre or unusual that they have rules entirely unique to themselves. Such troop types might well use some of the rules elements from other, more common troop types, or else have entirely distinct rules that do not appear anywhere else. Where this happens, the unit entry in the relevant Warhammer army book will contain all the special rules and information you need to get your unique unit into the fray!
Source: Warhammer Fantasy: 8th Edition
Unique UnitsURL Copied!