JAPANESE VOICE ACTOR: Aya Hisakawa
Keroberos, often called Kero-chan, is one of the Guardians of the Clow Cards and Sakura Kinomoto’s closest magical companion in Cardcaptor Sakura. In his small guardian form, Keroberos is voiced by Aya Hisakawa in the Japanese version of the anime. Her energetic and playful performance helped make Kero one of the franchise’s most beloved mascots.
When Keroberos transforms into his true beast form, the role is voiced by Masaya Onosaka, making Keroberos one of the few major characters in the series with separate voice actors for different forms.
Date of Birth
November 12, 1968.
About Aya
Aya Hisakawa is a Japanese voice actress and singer who has voiced numerous iconic anime characters since the 1990s. Her portrayal of Keroberos balanced comedy, wisdom, and warmth, helping establish Kero as both a comic-relief character and an important mentor figure for Sakura.
Hometown
Kaizuka, Osaka Prefecture, Japan.
Career Highlights
- Keroberos (Kero) — Cardcaptor Sakura
- Ami Mizuno / Sailor Mercury — Sailor Moon
- Retsu Unohana — Bleach
- Skuld — Ah! My Goddess
- Yuri Tsukikage / Cure Moonlight — HeartCatch PreCure!
- Bulma — modern Dragon Ball productions
Full Current Filmography
The following reflects documented major credits and may not be exhaustive.
Television Anime
- Cardcaptor Sakura — Keroberos
- Cardcaptor Sakura: Clear Card — Keroberos
- Sailor Moon — Ami Mizuno / Sailor Mercury
- Bleach — Retsu Unohana
- Ah! My Goddess — Skuld
- HeartCatch PreCure! — Yuri Tsukikage / Cure Moonlight
- Dragon Ball Super — Bulma
Anime Films
- Cardcaptor Sakura: The Movie — Keroberos
- Cardcaptor Sakura Movie 2: The Sealed Card — Keroberos
- Various Sailor Moon and Bleach franchise films.
Video Games
- Cardcaptor Sakura game adaptations — Keroberos
- Dragon Ball game franchise — Bulma
- Numerous anime-related game projects.
Critical Reception
Aya Hisakawa’s performance is widely praised for giving Keroberos a distinctive personality filled with humor and charm. Fans often cite her Kansai-flavored delivery and comedic timing as key reasons Kero became one of the most memorable mascot characters in anime.
Our Sources
- Behind The Voice Actors — Cardcaptor Sakura Cast (https://www.behindthevoiceactors.com/tv-shows/Cardcaptor-Sakura/)
- Wikipedia — Aya Hisakawa (https://en.wikipedia.org/wiki/Aya_Hisakawa)
- Cardcaptor Sakura Wiki — Cerberus (https://ccsakura.fandom.com/wiki/Cerberus)
- AVAC — Cardcaptor Sakura Cast (https://avac.moe/anime.php?id=232)
ENGLISH VOICE ACTOR: Matt Hill
In the English-language Cardcaptors adaptation produced by Ocean Group, Keroberos is voiced by Matt Hill. His energetic performance helped introduce Kero to Western audiences and became the voice most associated with the character’s small form in English. Keroberos’s larger true form was voiced separately by Richard Newman.
Date of Birth
January 19, 1968.
About Matt
Matt Hill is a Canadian voice actor known for numerous roles in animation, anime dubbing, and video games. Throughout his career he has voiced both heroic and comedic characters, with Keroberos becoming one of his best-known anime performances.
Hometown
North Vancouver, British Columbia, Canada.
Career Highlights
- Keroberos (Kero) — Cardcaptors
- Raphael — Teenage Mutant Ninja Turtles (2003)
- Ed — Ed, Edd n Eddy
- Kevin Keene — Captain N: The Game Master
- Kicker Jones — Transformers: Energon
- Ironhide — Transformers: Armada
Full Current Filmography
The following reflects documented major credits and may not be exhaustive.
Television Animation
- Cardcaptors — Keroberos
- Ed, Edd n Eddy — Ed
- Transformers: Armada — Ironhide
- Transformers: Energon — Kicker Jones
- Captain N: The Game Master — Kevin Keene
- Dragon Ball Z (Ocean Dub) — Additional Voices
Anime Films
- Cardcaptor Sakura franchise English releases — Keroberos
- Various animated feature projects.
Video Games
- Multiple animation and anime-related game projects throughout his career.
Critical Reception
Matt Hill’s portrayal is remembered fondly by fans who grew up with Cardcaptors. His energetic delivery captured Kero’s mischievous personality while maintaining the character’s role as Sakura’s magical guide.
Our Sources
- Behind The Voice Actors — Cardcaptor Sakura Cast (https://www.behindthevoiceactors.com/tv-shows/Cardcaptor-Sakura/)
- Anime Voice-Over Wiki — Cardcaptor Sakura (https://animevoiceover.fandom.com/wiki/Cardcaptor_Sakura)
- Behind The Voice Actors — Keroberos (Large Form) (https://www.behindthevoiceactors.com/tv-shows/Cardcaptor-Sakura/Keroberos-Kerberos-Large-form/)
Social Media
No verified official public social media profiles were consistently documented from available sources.
