Encyclopedia of Mythical Creatures:
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Wilis

Creature Types: Ghost

Mythological/Cultural Origins: German, Slavic

Roles/Functions in Lore: Cursed Individual, Dancer

Literary Sources/Traditions: Ballet Giselle, Folklore

Historical/Legendary Time Periods: Medieval Origin, Nineteenth Century

Attributes/Powers: Luring travelers, Nocturnal dance

Alignments/Moral Standings: Ambiguous

Wilis are spectral beings in German and Slavic folklore, particularly in regions of Germany and Eastern Europe. In some traditions, a young woman who dies before her wedding, especially if she was fond of dancing, becomes a wili—a pale, ethereal ghost who dances at night. The wilis are said to lure travelers into deadly nocturnal dances. This motif appears in the ballet ‘Giselle,’ where wilis play a central role as supernatural dancers of the night.