
Oreus (or Oreios) is one of my favourite creatures from Greek mythology purely because of his background story.
Oreus’s mother was a Goddess by the name of Polyphonte. She scorned Aphrodite so as punishment, Aphrodite put a curse on her making her fall in love with a bear. She then had two children with the bear, Agrius and Oreus.

Both brothers were powerful, ferocious, half man, half bear giants who killed anything that crossed their path. This upset Zeus and so he ordered a curse to be placed upon them. The curse turned them into birds. Agrius became a vulture and Oreus became the Eagle Owl.