Halloween is inspires imitation, not of villains, and goblins, but of heroic virtue.
The tradition started from the ancient Celtic holiday of 'Samhain' where people used to light bonfires for warding off ghosts.
The Celts thought that the spirits of the dead returned to earth the night before New Year.
The Celts also dressed in animal heads and skins.
Halloween has retained these traditions of singing, dancing, feasting, exchange of ghost stories, dressing up in costumes etc