The Far-Seeing Head of Mimir,
Fiery Guardian of the Well of Wisdom,
Grim Guardian of the Dark Well of Wisdom,
All-Knowing Well of Fire,
the All-Wise, Fiery One,
the Fount of All Knowledge
Irises: Red (original color unrevealed)
Asgardian known as Mimir was the child of Buri and brother of Bor, father of Odin and the Asgardians.
Some legends note him as the son of Bestla (Odin's mother) or Bolthorn (Bestla's father), or even Bolthorn's brother (thus possibly Ymir's grandson.
He was given by Odin to the
Vanir as a peace hostage during the Aesir/Vanir War. For unknown reasons, the Vanir decapitated him and send his living, talking head back to Odin.
Odin who transformed him into a fiery being. Thereafter, Mimir existed mostly as a disembodied head that dwelled in the
Well of Wisdom in Asgard.
Odin sacrificed his right eye to Mimir for the wisdom to prevent
Ragnarök. Mimir was a virtually omniscient being with precognitive abilities. Thor often traveled to Hildstalf, to seek out the wisdom from the  Well of Mimir. Thor sacrificed both his eyes for insight on how to permanently stop Ragnarok.
Powers and Abilities
Omniscience and precognitive powers
Links and References
Like this? Let us know!