Clow Reed is a fictional character in Clamp's anime and manga series Cardcaptors (aka Cardcaptor Sakura). He was known as the greatest magician of all time, drawing magic from both his half-European, half-Chinese heritage. He is the creator of the Clow Cards (also referred to as "The Clow"), a series of cards resembling tarot cards with various magical powers within them. Additionally, he is the creator of Card's two guardians Yue and Cerberus. The same Clow Reed also exists in the storyline of two other Clamp series, xxxHolic and Tsubasa: Reservoir Chronicle. All three series including Cardcaptors exist in the same multi-verse.