Trolls

Trolls, called trulent, are bestial giants driven by unrelenting hunger, occupying a niche between animal predators and the rest of giantkind. These rubber-skinned brutes prize strength, and they lust for slaughter and destruction, caring little for anything else. Secure in the knowledge that most creatures cannot inflict lasting injuries on them, they fight fearlessly. Despite these characteristics, trolls have the capacity to reason, and they can think beyond their next meal-although when one is at hand, they tend to concentrate on it to the exclusion of everything else. 

Trolls live in every climate on the surface and inhabit the Underdark as well. They typically operate within a 10-mile radius of their lairs, although those that live in subterranean areas are often more restricted in their excursions.

They are not overly territorial with creatures other than trolls, considering any creature willing to place itself within the reach of their claws and teeth a good thing. They often live semi-nomadic lives, moving on when they have depleted a nearby settlement of all its inhabitants and domesticated herds, and if wild fish and game are scarce. Unless driven away by powerful enemies, a troll will most likely return to its former haunts when food is plentiful again.

Trolls have no natural enemies, but some monsters prey on trolls like they would any other creature. Only a few of these actually give a troll cause to fear for its life: ankhegs, dragons, oozes, remorhazes, and purple worms. Any creature large enough to swallow a troll (whole or in pieces) and digest it with strong stomach acids encourages caution in a troll. Trolls are fearful of incorporeal undead as well, especially shadows. Most good races seek to kill or drive away trolls whenever they encounter them, as it is a fair assumption the trolls will eat them if given the chance.