In Estonian mythology, Vanatühi ("Old empty one", or alternatively, Vanapagan, "Old devil") is a/the devil or god of the underworld, a giant farmer who is more stupid than malevolent. He is outwitted by his servant Kaval Ants (Crafty Hans).[1] He is also the worst enemy of Toell the Great, hero of Oesel, who is decapitated during a battle with Vanatühi's forces.[2] Vanatühi sometimes wears a hat of nails (Estonian: Küüntest kübar) that makes him invisible. Once, Vanatühi stole the magic whistle belonging to the god of lightning, Pikne.