The two key elements of kercpa society are the defenders and the shamans.
Defenders: One in every 20 kercpas is an exceptional individual with 2 Hit Dice, For every 100 in a community, one is a leader of 3 or 4 Hit Dice. As the most skilled fighters, the defenders organize patrols, maintain the village's defenses, and lead the tribe in attack, retreat and, if necessary, evacuation. They take their duties, seriously and will not hesitate to sacrifice themselves for the tribe if the situation warrants.
The base THAC0s, and base saving throws of defenders increase with their Hit Dice; for example, a 3 HD defender has a THAC0 of 17 and the base saving throw of a 9 HD creature.
Through trade with pixies, any defender is 25% likely to have 1d4 sleep arrows (save vs. poison or sleep 1d6 hours). These will not be wasted on enemies that can be defeated by other means.
Shamans: All kercpa tribes are led by a shaman of 4th or 5th level. For every 50 kercpas in the tribe, there will be 1d2 lesser shamans of 1st to 3rd level. Shamans receive an additional 1d4 hit points for every level they possess beyond the first, and fight as if having an additional Hit Die for every two levels they possess. They can cast spells from the following spheres; all, animal, creation, divination, healing, plant, sun, and weather. Kercpa shamans are skilled herbalists and can treat numerous ailments. A typical kercpa healing potion restores 1d4+1 hit points, any kercpa traveling far outside the village is 75% likely to have one.
Kercpa shamans are responsible for preserving the tribe's health, providing advice and spiritual guidance, and presiding over ceremonies. In theory, the shamans govern all internal tribal matters, but in actuality kercpas are by nature cooperative, working together for the common good of the forest community. Internal and intertribal strife is unknown.
Most of the tribe's defenders are male, while most of the shamans are female. This is by no means the rule, and exceptions are not uncommon. The genders are in all ways equal (and difficult for outsiders to tell apart). Kercpas marry for life, and mates are fiercely protective of their young and of each other.
Some adult kercpas, as many as 5% dabble in magic, perhaps due to their close relationship with elves. These cast spells as wizards of up to 4th level. They rarely learn spells of an offensive nature, and never those involving fire.