Glámr

Glámr is the most famous individual walking corpse in the Icelandic sagas. A Swedish shepherd killed at Yule on a haunted farm, he returns as a huge, blackened revenant that terrorises the valley until the outlaw-hero Grettir wrestles him down and cuts off his head. He wins in death anyway: his dying curse leaves Grettir afraid of the dark for the rest of his life. The episode is the classic saga statement of the idea that an encounter with the dead leaves permanent damage.123