This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Xhindi (Albanian)
Xhindis are usually depicted as invisible spirits, somewhat analogues to elves in Albanian folklore. Their arrival is signaled by the creaking of doors and flickering of lights. Their intentions may be benevolent or malevolent thus they are sometimes represented as kind and helpful while sometimes they appear as oppressive.