Savage, cruel, and lacking all conscience, ogres typically raid for three reasons: out of greed, for love of slaughter, or—worst of all—to procreate. Fortunate victims of ogre attacks are quickly killed, their bodies turned into morbid playthings. Those who survive such attacks, however, face much worse.
The result of an unfortunate union between an ogre and a humanoid, the ogrekin (or half-ogre) is cursed with horrific malformations due to its tragic ancestry. Shunned by both parents, ogrekin tend to form unstable clans of their own, often resorting to inbreeding to sustain the collective. While good-natured ogrekin are not entirely unheard of, they are few and far between.
[Text from Pathfinder #3: The Hook Mountain Massacre, ©2007 Paizo, pp 90-91; and Pathfinder Bestiary 2, ©2011 Paizo, p. 204]