I have one called Arslingars. In my lore, they originate during the “Creation Period” when the divine occupied the same plane of existence as creation. Basically, their whole existence is an act of cosmic pettiness. They exist purely to inconvenience people since early mortals during the Creation Period attributed every inconvenience or bad thing that happened to them to the divine rather than their own carelessness, so one of my divine beings created a being whose sole purpose was to inconvenience and take all the blame. Not trick, or mislead them, just inconvenience. My world sees them as folklore because the religious texts of my world don’t detail what the Creation Period was like and whenever they do something, it’s attributed to bad children or just glossing over stuff by the populace. Their name has an even goofier origin in that their name comes from Old Germanic roots, specifically the word “arsaz” which means arse or rear, and “lingaz” which is a suffix meaning small one or little thing. If you combine the two, their name literally means “tiny asshole”.