Heroes of High Favor: Half-Orcs (d20)
They are the orphans of savage wars¸ drifting back into the territories of yet-unconquered people¸ a reminder of the constant struggle against the forces of chaos. Shunned by humanity¸ the half-orcs have learned to survive on their own¸ through savage barbarism: What is not freely given must be taken by force. The half-orc does not seek pity nor compassion¸ but fear and respect.
Each Heroes of High Favor book contains a toolkit of additional feats¸ skills¸ concepts¸ and prestige classes to explore your race's favored class. Half-Orcs features background information and role-playing tips for ten unique half-orc prestige classes¸ as well as new feats and new uses for old skills specific to barbarians. New Craftsmanship rules detail savage weapons and armor as well as quick-and-dirty "shoddy craftsmanship¸" so you can arm your horde in a hurry. New Handle Animal rules allow comprehensive (yet simple) cross-breeding of fantastic guardian beasts¸ and you'll find additional uses for your Intimidate and Wilderness Lore skills as well.
Heroes of High Favor: Half-Orcs is the definitive sourcebook for half-orc characters of every kind.