Japanese Name: Kero / CerberusSeiyuu: Hisakawa Aya (Kero) / Onosaka Masaya (Cerberus)
English Name: Kero / Keroberos
Voice Actor/Actress: Matt Hill (tv series), Wendee Lee (second movie Kero), Dave Wittenberg (second movie Keroberos), Richard Epcar (?), Richard Newman (?)
First Appearance: 1. Sakura and the Mysterious Magic Book (Japanese), 1. Sakura's Rival (American), 1. One Fateful Day (British/Canadian)
Description: Cerberus is one of Kinomoto Sakura's guardians and the one who had chosen her to collect the Clow Cards. He was created by Clow Read, along with Yue. He uses Western magic and his symbol is the sun. Sakura uses the nickname, "Kero", for her guardian and he doesn't mind it. Kero's two favourite things are food and video games. But when he's serious, he really cares for his mistress and wants to protect her. He often fights with Li Syaoran and Li Meiling. Still, he's a very powerful guardian and can guide Sakura when she needs him. He is not as cold as his fellow guardian but, rather, the opposite. He is probably closer to Sakura than anyone else, always her confidante and with her through thick and thin. More often than naught, Kero can cause Sakura quite a bit of trouble when he doesn't listen to her.