Eleanor's vessel

Eleanor became the vessel of a creature now known as Eleanor Visyak.

Background
In 1935, H.P. Lovecraft managed to open a doorway to Purgatory, thus freeing a benevolent or non-hostile creature that soon after took Eleanor as a vessel. Only Eleanor's son, Westborough, is aware of the possession, as he realized his mother had changed completely.

The real Eleanor remained as the creature's vessel for many years, until its death at the hands of Castiel and Crowley.

Appearances

 * Season 6
 * Like A Virgin (possessed by Eleanor Visyak)
 * Let It Bleed (possessed by Eleanor Visyak and photograph)
 * The Man Who Knew Too Much (possessed by Eleanor Visyak and corpse)