Demons exist as manifestation of evil or unclean spirits. Iblis is the proper name of the devil representing the characteristics of evil. Baator is stylised as a plane of sinister evil and cruelty. One is Belial who is described as the King of Evil and Prince of Darkness. Trithereon is a foe of evil and oppression. Halloween imagery includes themes of death, evil, and mythical monsters. Legends often paint underground kobolds as evil creatures. Temptation or pains of conscience originates from a conflict between evil spirits and angels. Some sort of evil cosmic energies altered him. Either alone is productive of evil consequences. Is he willing to prevent evil, but not able? It was believed to work via "letting evil spirits escape". Repent and turn away from your evil ways. Ritual music is also used as protection against evil spirits. This caused Starfire to leave Earth in order to escape from the evil Raven.