But these categories may overlap in some instances. Creeps are hostile wandering units who may be spread out in the gameworld or may reside in a neutral town. They drop items and gold when killed. Some may be hireable as well. These units may provide much needed clues or hints, or they may trigger entire game events.
Merchants are units with whom the player trades.
Critters are animal units that the player may select, and kill. And finally Ambient Life is made up of roaming animals that make the world more complete. These animals cannot be selected or killed. An assortment of weapons are carried by different Centaurs. Trox - Profile Nothing is known about these units that were spotted in a screenshot with Beach Terrain.