Utgard Loki
In Norse mythology, Útgarða-Loki (Anglicized as Utgarda-Loki and in other ways) was the ruler of the castle Útgarðr in Jötunheimr. He was one of the Jötnar and his name means literally "Loki of the Outyards," to distinguish him from Loki, the companion of Thor.
Read more about Utgard Loki: Prose Edda, Gesta Danorum, Popular Culture