Anthropomorphic Personification
A creature created by imagination, often originally deriving from solar rituals but adapting to fit the times. Examples include Death, the Sandman, the Soul-Cake Duck, the Tooth Fairy...and the Hogfather.
"Says here 'Implied Creation Of Anthropomorphic Personification.' What's that mean?"
"Er...I think Hex has tried to work out the answer."
"Er...I think Hex has tried to work out the answer."