(n.) A writer of fables; a fabulist; a dealer in untruths or falsehoods.

anecdotist creative artist fableist fabler fabulist fancier fantasist fantast fictionist imaginer inventor mythicizer mythifier mythopoet narrator novelettist novelist poet raconteur reciter recounter relator romancer romancist sagaman short-story writer spinner of yarns storier storyteller taleteller teller of tales word painter yarn spinner