A Slayer, in the television series Buffy the Vampire Slayer and Angel (both created by Joss Whedon), is a young female bestowed with mystical powers that originate from the essence of a pure-demon, which gives her superhuman senses, strength, agility, resilience and speed in the fight against forces of darkness. She occasionally receives prophetic dreams in the few hours that she sleeps. While, in the series, they are commonly referred to as "Vampire Slayers", even by Watchers and vampires themselves, the Slayer may operate as a defender against any and all supernatural threats.