Grímnir

Grímnir is a name and epithet for the Norse god Odin. As Grímnir, Odin is often depicted as a wandering, aged, and sometimes disguised figure. This persona allows him to observe mortals and gather knowledge without revealing his true divine identity. The name itself is thought to be related to concepts of "hooded" or "masked," further emphasizing his secretive nature in this guise.

In the Eddic poem Grímnismál, Odin is famously challenged by the young king Geirrøðr while disguised as Grímnir. Geirrøðr, unaware of the god's true identity, subjects Grímnir to torture by placing him between two fires. Odin, enduring the ordeal, eventually reveals himself and curses Geirrøðr with his death. The poem also features Odin recounting various kennings and mythological lore, often attributed to his Grímnir persona. The name Grímnir highlights Odin's multifaceted nature as a god of wisdom, war, and magic, who also employs cunning and deception.