Costume in the morality plays

A devil's costume (13th century). Scaly, like the serpent that tempted Eve, winged like the classical Furies, the devil has two faces, one where the mouth is also the anus, and the devil's tail/tale a second tongue.

In The Castle of Perseverance, see the direction to "he that shall play Belial [a devil]." (Look on the bottom right hand side of the illustration.)