Half-orcs appear wherever orcs encounter humans. In particular, those tribes driven south into the lands now occupied by the Empire of Altan are now mostly dominated by the half-orcs, who have adapted much better to having little underground living space due to the high water table. The Scarborough quarter of Lindberg is also home to many orcs and half-orcs, barely tolerated by the other residents of the city.
Of first-generation half-orcs, most have orc fathers and human mothers. This is generally a result of men finding female orcs not terribly femininely attractive, while the orcs tend to see that men are less man than their own males. While bearing a child sired by a bulkier race may seem difficult, this is mitigated by the fact that orc children are born earlier in their development than humans, and this is in part passed on to half-orc infants as well.
Half-orcs are not much taller than humans on average, but they have a bit more variation in this area. This is a result of the variation in how much of the orc’s stooped posture is inherited by each individual. Some may be more hunched, others standing tall.
A half-orc’s human side gives him much greater versatility than his orc relatives. In particular, half-orcs are better suited to mentally oriented tasks, allowing them to find positions as shamans and even administrators in orc tribes. When living among humans, however, they offer no particular advantages other than being big and scary. Humans are actually much less accepting of those who carry the blood of what they consider monsters, while orcs see humans as merely weak and can accept anyone who proves himself better. Prejudices often cause half-orcs to stick to the shadows and to the streets at night, where they are less conspicuous to humans yet can see perfectly well themselves.