Raven is a character created by Marv Wolfman and George Perez. She is the daughter of the demon Trigon and the benevolent witch Arella. She decided to use her magical powers to fight the forces of evil as a superheroine, thus joining the Teen Titans. She channels her magical powers by yelling "AZARATH METRION ZINTOS!". She is Beast Boy's girlfriend. Trigon is her arch-nemesis.