Revellers dressed in costume, Carnevale (Carnival), Piazza San Marco, Venice, Veneto, Italy, Europe

St. Michael weighing the souls, Portal of the Last Judgement, Western facade, Notre Dame de Paris Cathedral, Paris, France, Europe

The Devil on the Plougonven calvary, Plougonven, Finistere, Brittany, France, Europe

The Devil depicted in the Life of Jesus on the Plougonven calvary, Plougonven, Finistere, Brittany, France, Europe

Devil Sculpture, St Stephan Cathedral, Vienna, Austria

Asian woman wearing devil's horns

Krampus or devil mask, carved wooden mask

Carved wood mask (Perchten)

Carved wood mask (Perchten)

Carved wood mask (Perchten)

Carved wood mask (Perchten)

Carved wood mask (Perchten)

Krampus mask, devil costume in Ora, Alto Adige, Italy, Europe

Krampus mask, devil costume in Ora, Alto Adige, Italy, Europe

"True Devils" graffiti opposite the Theater-Halle 7, Gerolsteiner Ring, Munich, Bavaria, Germany, Europe, PublicGround

Cute French Bulldog dog wearing Halloween costume with red devil horns and tail

Krampus character, Perchtenlauf parade, Siezenheim, Salzburg, Austria, Europe

Krampus or devil mask, carved wooden mask

Krampus characters, Perchtenlauf parade, Siezenheim, Salzburg, Austria, Europe

Krampus masks, devil costumes in Ora, Alto Adige, Italy, Europe

Krampus mask, devil costume in Ora, Alto Adige, Italy, Europe

The devil in the Marienkirche church, sculpture by Rolf Goerl, 1999, Luebeck, Schleswig-Holstein, Germany, Europe

A sign for recently renamed U.S. Highway 666 stands alongside the road south of Cortez, Colo. Citizen and Native American groups petitioned the federal government to change the number of the road for fear the devilish connection contributed to accident and fatality rates on the highway.

Fontaine Saint-Michel, Paris, France