An orc (also spelled ork) is a fictional humanoid creature that is part of a fantasy race akin to goblins. While the overall concept of orcs draws on a variety of pre-existing mythology, the main conception of the creatures stems from the fantasy writings of J. R. R. Tolkien, in particular The Lord of the Rings. In Tolkien's works, orcs are a brutish, aggressive, repulsive and generally malevolent species, existing in stark contrast with the benevolent Elvish race and generally serving an evil power. Tolkien's concept of orcs has subsequently been adapted and imported into other works of fantasy fiction as well as role-playing and strategy games (such as Dungeons & Dragons, Warhammer, and Warcraft), broadening the recognition of the creatures in popular culture.