fabulist

noun
1
a person who invents or tells fables(= traditional moral stories)
افسانه‌پرداز, قصه‌گو, افسانه‌گو
2
a person who tells lies, especially in the form of long and unlikely stories
افسانه‌پرداز, داستان‌باف, دروغپرداز
He was a fabulist, a liar who made up extravagant stories about being a famous film director.