Firvulag are mythical creatures from Jewish folklore, often depicted as mischievous and sometimes malevolent beings. They are known for their trickery and are said to inhabit remote areas, causing trouble for unsuspecting travelers. In stories, Firvulag are often compared to other mythical beings, such as goblins or sprites. They are characterized by their playful nature, but their antics can lead to chaos, making them both fascinating and fearsome figures in folklore.