Orcs, also known as Oni, are a fictional sapient species featured in the novel The Apprentice Librarian.
Orcs are large humanoids with upturned noses and large bull-like horns. They came from the Western Plains of Arcadia in their drakkars, but were banned from all rivers by King Leonard's Crusade, and have since roamed the country, organized in small packs that barely tolerate each other. Orcs' craft is rough and imperfect, and they wear both the primitive clothes they make and clothing stolen from their victims. During the events of the novel, some orcs are recruited by the Dark Master as mooks.