Draugr

The draugr or draug (Old Norse: draugr, plural draugar; modern Icelandic: draugur, Faroese: dreygur and Danish, Swedish, and Norwegian: draug), also called aptrganga or aptrgangr, literally "again-walker" (Icelandic: afturganga) is an undead creature from Norse mythology and recurring enemies that infested Northard, rising due to power of Helheim. Called "death" internally.

Single Player
While Draugrs can be found at random tiles, they mainly respawn at Draugr Tombs, a defiled burial ground that must be colonized in order to prevent more of them from rising.

Story Mode
Brand and Rig first encounter a draugr upon their early days at Northgard before meeting Halvard, leader of Heidrun Clan. The latter is surprised as he already heard about legends that surrounding draugrs, but skeptical to the point of being dismissive about it until their said encounter.