Goblins

Goblins are small, black-hearted, selfish humanoids that lair in caves, abandoned mines, despoiled dungeons, and other dismal settings. Individually weak, goblins gather in large — sometimes overwhelming — numbers. They crave power and regularly abuse whatever authority they obtain.
Appearance Goblins were small goblinoids that many considered little more than a nuisance. They had flat faces, broad noses, pointed ears, and small, sharp fangs. Their foreheads sloped back, and their eyes varied in color from red to yellow. Their skin color ranged from yellow through any shade of orange to a deep red; usually, all members of the same tribe shared the same colored skin, though they also came in shades of green. Goblins were typically dressed in dark leathers soiled by poor hygiene and colored in a similar range of tones to their skin. Goblins usually stood between 3′4″‒3′8″ (1‒1.1 m) and weighed about 40‒55 lb (18‒25 kg) on average.
Personality Goblins, like other goblinoids, had a commonly short temper. Leaders among the race often came to power through betrayal or aggression, rather than by more peaceful means, or as clerics of the goblin gods. As such, members of the race were more easily provoked than individuals of most other races and often took sadistic pleasure in exacting revenge once crossed. Goblins who turned away from evil often found it difficult to overcome this short fuse and had a sense of greed that made it difficult for them to act altruistically. Those that did often made use of their ill-gained talents as rogues or fighters.
Though goblins had a poor reputation overall, not all goblins were dim-witted or evil. Some goblins have risen to become heroes, gaining enough renown to be accepted into the civilized world of other, more commonly good, races. Those goblins seeking this path may have found it difficult to overcome their temper and greed, as well as the cultural influence of their brethren, but those who did often found it could be more rewarding, in the long run at least, to serve good rather than to serve evil. Many goblins who left for life among other races were females, driven away by the rigidly structured role they were expected to play. Other expatriated goblins would try to recreate the circumstances of their culture, preying on the weaknesses of others in non-goblin communities.
Being bullied by bigger, stronger creatures has taught goblins to exploit what few advantages they have: sheer numbers and malicious ingenuity. The concept of a fair fight was meaningless in their society. They favored ambushes, overwhelming odds, dirty tricks, and any other edge they could devise. Goblins preferred to fight battles where the odds were in their favor and often fled or surrendered when outmatched.
Religion Maglubiyet  the Mighty One, the Lord of Depths and Darkness, is the greater god of goblinoids. Envisioned by most goblins as an eleven-foot-tall battle-scarred goblin with black skin and fire erupting from his eyes, he is worshiped not out of adoration but fear. Goblins believe that when they die in battle, their spirits join the ranks of Maglubiyet’s army on the plane of Acheron. This is a “privilege” that most goblins dread, fearing the Mighty One’s eternal tyranny even more than death.