Thrasalisk

Thrasalisks are a crossbreed of dragon and basilisk, born from the magical experiments of a mad wizard. The creature's venom is extremely toxic, capable of killing the strongest of men with a mere drop.

Trojleen

Trojleens began as an offshoot of simple forest gnomes who came into contact with a strange meteorite which crashed into their secluded village. The strange energies from the extraterrestrial rock mutated the poor gnomes into a terrible, demented state. Despite their apparent mindlessness, Trojleens still main a modicum of an organized life, living in villages, protecting young, etc. They will fearlessly attack any creature which enters their territory, and have been known to gang up and tackle those many times their size.

Forest Troll

Forest Trolls are a breed of troll that prefer to live in the deep, dank forests, where the canopy doesn't allow through too much sunlight. It has been rumored that if such creatures are exposed to full sunlight they may turn to stone. During the day such creatures usually seek shelter in caves, bury themselves in the ground, or conceal themselves with thick shrubbery, though at night they venture forth to pick off the lone traveler or raid nearby settlements.

Dragon Men

Dragon men are a race of ancient human-dragon hybrids, created by the ancient Dragon lords to be used as higher minions. In times past the Dragon men acted as generals and lieutenants overseeing the battles between vast armies as the Dragon lords warred among themselves. In the cataclysm brought about by the constant battle this race of hybrids nearly perished. They have survived by isolating themselves in various hidden places of the world, waiting for the time when their slumbering lords may yet rise again and renew the conflict.

Wivre Dragon

Wivre Dragons (or Wyrens) are usually smaller, with two legs, wings, and a barbed tail. Wyrens usually do not possess a breath weapon, but instead use a very toxic venom. They are nowhere near as intelligent as proper dragons, lacking all but the most base of animal instincts.

Slig

In Frank Herbert's Dune novels, a Slig is a slug/pig hybrid created by the Bene Tleilaxu. They are bred for their meat (described as "The sweetest meat this side of heaven,") and for their ability to feed on and control garbage. The Tleilaxu themselves do not eat Slig meat, which they regard according to their strict religious practices as "unclean."

Sea Dragons

Dragons adapted to life in the open ocean. Like dolphins or whales, sea dragons are air breathing creatures and must periodically surface. Ancient adults are capable of remaining underwater for hours at a time. Sea Dragons are generally solitary creatures, and will have a lair in deep underwater caves with trapped air pockets.

Green Dragon

Green Dragons are forest dwellers. They will usually make their lairs in damp, sheltered places, such as caves, gullies, or ravines. Green dragons expel a poisonous, venomous gas, although there are breeds which breathe fire as well.

Cainaline Dragon

Cainaline Dragons are have a long, winding body type, are warm blooded, and are covered in hair. The older the specimen is, the longer it grows. Cainalines are natural magic users. Most adults develop the ability to fly by harnessing the Earth's ambient magical energy. Cainalines will usually focus their innate magical abilities towards the pursuit of one (usually positive) emotion or concept, such as love, vigor, happiness, wisdom, or Luck. They are generally good natured and friendly towards humans, although "evil" Cainalines are known to exist.

Felidade Dragon

A type of dragon with an erect body type and feathered wings. Felidades walk with a feline-like gait when upon the ground. They are homeothermic (warm blooded,) and have a relatively high metabolism. They generally grow to a maximum size of 10 feet at the shoulder. Felidades are highly intelligent (as are most dragons) and maintain a highly ridged social structure amongst themselves. They are very honorable, and will enlist in the service of those to whom they owe debts.

Blue Dragon

Blue dragons tend to live in sandy, arid environments, such as deserts or brush land. They are carnivorous, and like to feast upon horses, camels, or other dragons. Blue dragons have a lightning breath weapon. They are notorious for casting illusions to trick weary desert travelers.

Black Dragon

Black Dragons are generally evil, and live in marshes and wet caves. The creature's venom is strong and acidic.

Trogoblyn

Trogoblyns are large, malformed, cave-man Goblins. They are generally larger, meaner, and stupider than normal goblins, more prone to resort to brute force and violence. Their smaller cousins tend to use them as cannon fodder.

Hobgoblins

Hobgoblins originated in European folklore as household spirits (which probably evolved from a form of ancient ancestor worship,) and played a similar role to goblins, brownies, pixies, etc. They were generally not seen as "evil," but would play tricks if not given the proper respect.

In modern fantasy fiction, Hobgoblins are a larger, stronger, brutish form of goblin. They are usually a greenish color, have features of various animals (claws, pig noses, etc.) and are mostly beholden to some figure of greater evil.

Smashgibber

A large, mutant giant, created by a mad wizard's experiments. Smashgibbers are mindless hulks with no wills of their own. They are trained to attack intruders on sight, and can only be stopped by death or their master's command. They are used primarily as guards, grunts, and cannon fodder.

Red Dragon

Large, fire breathing dragons, perhaps the most savage of their breed. Red dragons come in a variety of shapes and sizes, including winged and ground dwelling versions. They all however share certain characteristics in common - high intelligence, ability to breathe fire, hording of treasure. Elders of the species also develop highly advanced magical abilities, including transformation and illusion casting.

Orcs

Orcs were originally envisioned by J.R.R. Tolkien in his celebrated Lord of the Rings trilogy. Tolkien may have derived the word from "Orke," which in old English described a giant, ogre, or troll. In fantasy fiction, Orcs are usually large, strong, barbaric humanoids with traits of various animals (fangs, snouts, pointed ears, etc.) Tolkien's orcs were the bastardized twisted spawn of tortured Elves. They tend to be cleaver but generally less intelligent than human beings, usually in service to a more powerful evil force (wizard, demon, etc.) and always attack en masse.

Goblin

Goblins were originally household spirits in European Pagan belief. "Goblins" went by many different names - Hob, hobgoblin, brownie, nixie, tomte, etc. Generally, such "faire folk" were helpful around the house unelss offended, by which they would then perform pranks and mischief. Such a belief in household spirits may have evolved from ancient ancestor worship.

Modern fantasy fiction has recreated the Goblin into a small, pig-like, gruntish humaniod of limited intelligence. Generally they tend to swarm by the thousands, are the antithisis of Dwarves, and tend to fall under the command of beings more powerful than themselves (wizards, demons, etc.)

Lindworm

The Lindworm was a specific type of dragon, classified by two legs, no wings, and a long snake-like body. Some speculate that it merely refers to a stage in a dragon's growth cycle where extra wings or legs have not yet developed. Belief in Lindworms was prevalent all throughout Europe, where they were sighted in village wells and other water sources. Marco Pollo reported seeing Lindworms on the Asian steppes.