Orc is a proper name for one of the characters in the complex mythology of William Blake. A fallen figure, Orc is the embodiment of rebellion, and stands opposed to Urizen, the embodiment of tradition.
In Blake's illuminated book America a Prophecy, Orc is described by his mythic opponent, "Albion's Angel" as the "Lover of Wild Rebellion, and transgressor of God's Law". He symbolizes the spirit of rebellion and freedom, which provoked the French Revolution.