Draugr
Draugr (ON draugr, Norw. draug, Sw. drög) is a corporeal undead revenant in Norse/Nordic folklore. Guards burial mound (haugbúi) and treasure with superhuman strength, shapeshifts (seal, bull, cat), curses intruders. Skin hel-blár ('death-blue') or nár-fölr ('corpse-pale'), reeks of decay. Kárr inn gamli in Grettis saga explicitly called draugr.