In Norse mythology, Jörmungandr, or "Midgarðsormr" was a sea serpent so long that it encircled the entire world, Midgard. Some stories report of sailors mistaking its back for a chain of islands. Sea serpents also appear frequently in later Scandinavian folklore, particularly in that of Norway.
Draugr (Norse mythology): Undead Vikings who possess superhuman strength, the ability to swell and increase their size or shapeshift at will, and reek of decay. They delight in violently slaughtering and sometimes consuming their victims, usually people who have trespassed on the graves or burial mounds the draugr guards, although sometimes they roam and rampage, killing animals and humans alike. From Tor.com
In Norse mythology, Sleipnir (Old Norse “slippy”or “the slipper”) is an eight-legged horse. Sleipnir is Odin’s steed, and is the child of Loki and Svaðilfari. He is described as the best of all horses, and is sometimes ridden to the location of Hel.
In Norse mythology, Fenrir (Old Norse: "fen-dweller"), Fenrisúlfr (Old Norse: "Fenris wolf"), Hróðvitnir (Old Norse: "fame-wolf"), or Vánagandr (Old Norse: "the monster of the river Ván") is a monstrous wolf. In both the Poetic Edda and Prose Edda, Fenrir is the father of the wolves Sköll and Hati Hróðvitnisson, is a son of Loki, and is foretold to kill the God Odin during the events of Ragnarök, but will in turn be killed by Odin's son, Víðarr.
✯ Huginn and Muninn: In Norse mythology, Huginn (meaning “thought”) and Muninn (meaning “memory” or “mind”) are a pair of ravens that fly all over the world, Midgard, and bring the god Odin information. [x] ✯
Ratatoskr on Yggdrasil (source unknown). The Vikings regarded gossip as a low and churlish form of skullduggery reserved for thralls, slaves, churls and other such hoi-polloi. It seems appropriate that the embodiment of gossip and slander in their mythology was an annoying chattering squirrel. Wayne Ferrabee