Shadows: found in Plains of Hevok and the Bluffs of Zden
    Shadows are shadowy, undead creatures that drain strength from their victims with their chilling touch.
    Shadows are 90% undetectable in all but the brightest of surroundings, as they normally appear to be nothing more than their name would suggest.  In bright light, they can be clearly seen.

Skeleton: One of the Eight Races of the game.
Also, NPC's are Skeleton Kings found in the Bluffs of Zden
Bone Lords and Bone Warriors found in Tamia Deeps
    All skeletons are magically animated undead monsters, created as guardians or warriors by powerful evil wizards and priests.
    Skeletons appear to have no ligaments or musculature which would allow movement.  Instead, the bones are magically joined together during the casting of an animate dead spell.  Skeletons have no eyes or internal organs.
    Skeletons can be made from the bones of humans and demi-humans, animals of human size or smaller, or giant humanoids like bugbears and giants.

Spectre: found in the Barrows of Zden
    Spectres are powerful undead that haunt the most desolate and deserted of places.  They hate all life and light.
    Spectres appear as semitransparent beings and are often mistaken for haunts or ghosts.  Unlike most undead, spectres retain the semblance and manner of dress of their former life and can be recognized by old friends or through paintings of the persons they used to be.

Troglodyte: found in Greenmist Forest
    Troglodytes are a warlike race of carnivorous reptilian humanoids that dwell in natural subterranean caverns and in the cracks and crevices of mountains.  They hate man above all other creatures and often launch bloody raids on human communities in search of food and steel.
    Troglodytes stand about 6 feet tall, are covered in roughened leathery scales, and have a toothy lizard-like head.  Males are easily distinguished from females by the fin-like crest that runs across their heads and down their necks.  Coloration for both sexes varies due to the troglodyte's chameleon-like ability to change skin tone, but grayish brown is most common.  Most troglodytes wear little more than a leather weapons belt, with perhaps a small bag of semi-fresh meat.  Leaders adorn their belts with pieces of steel, a sign of power in troglodyte culture.

Troll: found in Greyknife Peaks, Valley of the Giants, Orc Caves, Dark Forest, and Serpentine Mountains
    Trolls are horrid carnivores found in all climes, from arctic wastelands to tropical jungles.  Most creatures avoid these beast, since trolls know no fear and attack unceasingly when hungry.  Their frame appears thin and frail, but trolls possess surprising strength.  Their arms and legs are long and ungainly.  The legs end in great three-toed feet, the arms in wide, powerful hands with sharpened claws.  The trolls' rubbery hide is colored a moss green, mottled green and gray, or putrid gray.  A writhing hairlike mass grows out of their skulls and is usually greenish black or iron gray in color.  Their dull, sunken black eyes possess 90-foot infravision.  Females are easily distinguished from males; they are both larger and more powerful than their male counterparts.
    Trolls walk upright but hunched forward with sagging shoulders.  The trolls' gait is uneven and, when running, the arms dangle free and drag along the ground.  For all this seeming awkwardness, trolls are very agile.  They are masterful climbers and can scale even sheer bluffs with an 80% chance of success.  Trolls have a poor hearing, but their sense of smell is superior.