Noun: arrogator 'er-u,gey-tu(r) [N. Amer], 'a-ru,gey-tu(r) [Brit]- A person who through conceit makes pretentious claims to rights or advantages that he or she is not entitled to or to qualities that he or she does not possess
"The arrogator boasted about connections to royalty that he didn't actually have"
Type of: actor, doer, worker