Orc and human tribes sometimes form alliances, joining forces into a larger horde, much to the terror of civilized lands nearby. When these alliances are sealed by marriages, half-orcs are born. Some half-orcs rise to become proud chiefs of orc tribes, their human blood giving them an edge over their full-blooded orc rivals. Some venture into the world to prove their worth among more civilized cultures. Many of these become adventurers, achieving greatness for their mighty deeds and notoriety for their barbaric customs and savage fury.
Some are reserved, trying not to draw attention to themselves. A few show piety and good-heartedness as publicly as they can (whether or not such demonstrations are genuine). Some just try to be so tough that others simply avoid them.