Orcs were a race first bred by Morgoth, which mostly lived in mountain caves and disliked sunlight. Many of them lived in the Misty Mountains while others lived in Mordor. They are also known as goblins. The Orcs were not created, since "evil cannot create, only corrupt" in Tolkien's philosophical perspective. One version of their origin, widely known in part due to its use in Peter Jackson's films, postulates that they were Elves who were corrupted and whose appearance was changed over time. However, Tolkien also wrote other accounts of their origin.