Name: Cerberus
Dubbed Name: Keroberos
Master: Sakura Kinomoto
Birthday: Secret
Symbol: Sun
Aspect: Light
Eyes: Gold
Body: Orange-Gold
Magic: Western
Favorite Food: Sweet Stuff
Favorite Thing: Anything Noisy and Fun
Least Favorite: Anything Sad and Lonely
Temporary Form: Kero

Facts:
He sits on Syaoran in Cardcaptor Sakura: The Sealed Card.

Storyline Role: Guardian of the Clow Cards and Sakura
Cerberus used to be the guardian of Clow Reed, but now he is the guardian of Sakura, his new master. Cerberus makes his first appearance in Episode 45 after Sakura captures the Earthy Card. In order for Kero to be in this form, he needed Sakura to capture the Firey and Earthy Card. Cerberus helps Sakura in the third season, but he is in his temporary form, Kero, most of the time.