Dean Winchester with Chevrolet Impala 1967

What do yellow, red, white and black all have in common?

All fan of the Televisione series Supernatural know the answer to this question. It’s the few different eye colours associated with demons in the show. In religion and mythology, occultism and folklore, a demon is a Supernatural being that is generally described as a malevolent spirit.

First seen in the season four episode, Phantom Traveler, demons continue to play a major role throughout the entire five seasons and probably will until end of the new season. The most essential aspects that relate to Dean and Sam Winchester began in 1973...