Both Odin and Loki are shape-shifters in Norse myth. Unusually, both take on female forms, and Loki in the form of a mare bore Sleipnir.

Odin took the form of different animals. He transformed himself into an eagle, a serpent, a fish. He also has two ravens that act as his mind traveling the universe. Munnin is the power of reflective thought while Hugnin is the power of the intellectual or cognitive ability. These birds are symbolic of the shaman as a seer.

It is thought that Loki was androgynous for he is able to conceive children, animals, and supernatural creatures. He had three offspring by a giantess named Angrboda: the wolf Fenrir, the Midgard serpent Jormungand, and Hel, who reigns over the realm of the dead.