Whether united under the leadership of a mighty warlock or having fought to a standstill after years of conflict, orc and human communities, sometimes form alliances. When these alliances are sealed by marriages, half-orcs are born. Some half-orcs rise to become proud leaders of orc communities. Some venture into the world to prove their worth. Many of these become adventurers, achieving greatness for their mighty deeds.
Please refer to the Players Handbook for further details on the race of Half-Orc