Better Monstrous Humanoids

This class of Chaotic humanoids band together in clans and tribes. They are generally scavengers and pillagers who live off the spoils of nearby human villages too weak to defend themselves. 

Monster Type	Number Appearing	Armor Class	Move in Inches	Hit Dice
Kobolds	30-300	7	9	½
Goblins	30-300	6	9	½
Orcs	30-300	6	9	1
Hobgoblins	20-200	5	9	1 + 2
Gnolls	20-200	5	12	2

Kobolds

Kobolds are small hairy creatures with that walk on two leg. They have sharp claws and keen senses. Kobolds live underground in tightly-knit family groups, scavenging and hunting for food. They rarely have treasure of their own, but are often found in the service of more powerful creatures. They are easily bullied and cling to stronger creatures for protection.

Goblins

Goblins are small humanoids with large fangs and green skin. They are incredibly ugly and have foul breath. They are cunning craftsmen and delight in trapping, torture, and looting. They are especially fond of magic charms. They love to seed discord and enjoy the taste of man flesh. Goblins hate dwarves and gnomes and will attack them on sight. Sometimes, goblins will keep wolves as pets.

Orcs

Orcs are larger than goblins and walk upright. They are built like athletic men with pig-like faces. They delight in war and carry scimitars and short bows. Orcs organize themselves into tribes. Infighting is common between clans. Orcs live in caves guarded by sentries or villages protected by palisade walls. They use traps and siege weapons and often sell their services as mercenaries to high-level highers and magic-users or dragons. When encountered in the wilderness, there is a 50% chance that the orcs will be escorting a train of wagons from one Chaotic outpost to another. The wagons contain 200-1200 Gold Pieces of supplies.

Hobgoblins

These large goblins are warlike and organized. They walk upright and have rough reddish skin, and wolfish features. Hobgoblins run their villages like highly regimented military forts. Unlike orcs, hobgoblin clans are headed not by the strongest warrior, but by the most tactically gifted one. Also, unlike other humanoid, hobgoblins do not dislike sunlight and often venture out on raids during full daylight. Hobgoblins favor pole arms, swords, and short bows as weapons.

Gnolls

Gnolls are wild and vicious humanoids with the face of dogs and thick fuzzy fur. They tend towards larger weapons, usually axes. Gnolls raid towns and travelers because they disdain the notion of  meaningful work and physical labor. Fortunately for their victims, gnolls are very disorganized and travel is loose bands; their raiding parties generally spend as much time arguing and fighting among themselves as they do pillaging.