Úlfhéðinn (plural Úlfhéðnar) is an Old Norse term for a warrior with attributes parallel to those of a berserker , but with a lupine aspect rather than ursine; both terms refer to a special type of warrior capable of performing feats far beyond the abilities of normal people. Historically, this was attributed to possession by the spirit of an animal. Úlfhéðnar are mentioned in Vatnsdœla saga, Haraldskvæði and the Völsunga saga. The Ulfhednar were said to wear the pelt of a wolf upon their heads when they entered battle, similar to the berserkers use of bear pelts.

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