• Nickname: Kero
• Birthday: Secret
• Favorite food: Sweet things
• Least favorite food: Bitter things
• Favorite thing: Video game
• Favorite color: Red, orange
• Favorite TV show: Quiz shows
• Favorite flower: Sunflower
• Most wanted: A new video game
• Place of living: Right now at Sakura's
• Original shape: A giant winged-dog
• See also Kerberos / Cerberus

CLAMP picked the name "Cerberus." But Kerberos is closer to the nickname "Kero." Kero is the Guardian Beast (or Beast of Seal) of the book "The Clow." It duty is to watch over the Clow Cards to make sure they don't turn bad. However, it fell asleep... Without enough magic, Kero can't return to its true form, and stays like the shape of a stuffed animal until Sakura captures "The Earthy" and "The Firey." In Greek mythology, Cerberus, or Kerberos, is a three-headed dog with a serpent or dragon tail, which guards the entrance to the Underworld.

© CLAMP / Kodansha / NEP21