Cerberus is one of the main characters of Clamp's manga and anime series Cardcaptor Sakura. His name is more commonly known in its romanized version, Keroberos, which is also often shortened to Kero-chan or just Kero.
In the Japanese version, he is voiced in his more common "hidden" form by Aya Hisakawa who also voiced Yuki Sohma, Retsu Unohana and Masaya Onosaka in his "true" form who also voices Zhao Yun, Zhuge Liang, Issac Dian, and Vash the Stampede.
In the English version, he was voiced in the series by Matt Hill (borrowed form) and Richard Newman (true form), Wendee Lee (borrowed form) and Dave Wittenberg (true form) in the second movie and currently, Mikaela Krantz (borrowed form) and Christopher R. Sabat (true form) in Cardcaptor Sakura: Clear Card. The former two of which also played Sailor Mercury and Vash the Stampede and the latter of which also played Kurogane, Piccolo and Alex Louis Armstrong.
In his borrowed form, Keroberos resembles a bear or rather a stuffed animal or a plush toy with yellow-orange fur, big ears, and small white wings. However, his true form is that of a huge, tawny mane-less lion, with enormous angelic white wings and chest plate of beaten metal, studded with rubies.
By nature, Keroberos is bossy, demanding, and gluttonous, but he also genuinely cares about Sakura and believes that she will become the next Master of the Clow as he acts as her guide to gather the Cards. He is responsible for giving Sakura the Sealing Wand, having appointed her to be the one to recapture the Cards she unknowingly released.
Kero's hobbies include playing video games and eating snacks and sweets (he loves sweets more than almost anything), even though, drawing his power from the sun, he generates his own energy, and does not need to eat to survive but unlike Yue, he enjoys the finer things in life.
He has a particular fondness for cake, cookies, and chocolates. In the anime, he was also intoxicated by a box of brandy chocolates, causing him to become drunk. Despite his fondness for sweets and other food items, he is not often above sharing, provided there is enough left for him (except in episode 10, season 3 when he intoxicated Spinner Sun by unknowingly forcing a doughnut into Spinner Sun's mouth, resulting in the creature gaining a sugar high before proceeding to run all over Reidington Elementary, causing havoc).
Keroberos also enjoys being filmed by Sakura's best friend, Tomoyo Daidouji and, unlike his Mistress, relishes the costume accessories he is asked to wear for these recordings. Even though he has been a willing servant all his life, Keroberos can be somewhat of an egomaniac, obsessing over his "coolness", and is seen bragging about himself after watching most of Madison's recordings.
Despite his sometimes erratic behavior, Keroberos is remarkably intelligent. He is knowledgeable not only on the Clow Cards but also on all forms of mysticism, with a knack for reading magical auras. At one point this leads him astray when Layla Mckenzie tricks him by using her strong moon-aspected aura to cover up Yue's, preventing Keroberos from realizing Yue's false form. In addition to this, Keroberos is also not quite as carefree and without inhibitions as he seems at first glance.
CLAMP describes Keroberos' "favorite thing" as "loud fun", and his least favorite as "being sad or lonely". Keroberos doesn't like wallowing in life's sad and depressing facts, which could possibly why he takes up so many indulgent pastimes like food and video games to distract himself from them. This does not, however, mean that he is immune to these realities, as is shown in the first arc of the series when he is seen frequently musing about his fears concerning the rapidly approaching Final Judgement to the point of obsession. His lack of communication regarding the Final Judgement nearly causes Sakura to fail as she is unaware that Yue can turn the power of any Clow Card under his jurisdiction back at her, but thanks to Layla, Sakura is eventually able to defeat Yue and become the new Master of the Clow Cards, while also gaining a new Staff in the process. As with Layla's Bell of the Moon, her Sealing Staff changes from its original structure to resemble that of a single star.
Powers and Abilities
Sensing: Keroberos has the ability to sense the Clow Cards and magical presences. While he can usually determine their exact attributes through this Sensing ability, it has been proven that interference from powers far superior to his can hinder his Sensing, as seen when Eriol Hiiragizawa( 1/2 of the reincarnation of Clow Reed) could effectively conceal his exact whereabouts and identity from both Keroberos and Yue until he personally revealed who he really was. Basic Plushy Powers: While in his plushy form, Keroberos is still able to fly, but cannot use any of his magical abilities aside from his (weakened) abilities of Sensing, spreading tiny fireballs (as seen at the end of episode 35) and breathing fire (as seen in episode 45 when fighting the Earthy).
Clow Cards: In his true form, he has jurisdiction over all things fire and earth, the elements which draw their power from him.
Energy Barriers: Keroberos is able to summon protective energy barriers to protect himself and others from both physical and magical attacks.
Fire Breath: As fire is one of the elements under his control, Keroberos is able to shoot balls of fire from his mouth.
His powers are based on the Sun and his power comes from Western magic. Half of the deck are under his protection, and these are the only cards that can effectively be used against Yue. The Elements he controls are The Firey (his aggressive element) and The Earthy (the slightly more passive Element under his jurisdiction). Here is a complete list (please note it is said The Light is the first card under him but the rest of the order is unknown):
- The Light
- The Fire
- The Earth
- The Glow
- The Dream
- The Big
- The Little
- The Create
- The Sweet
- The Power
- The Thunder
- The Fight
- The Sword
- The Arrow
- The Shot
- The Through
- The Twin
- The Maze
- The Flower
- The Shield
- The Sand
- The Libra
- The Lock
- The Loop
- Apparently, Kero spent 30 years asleep in the Clow Card Book before Sakura released him.
- Due to Kero not having a place to stay since being released from the Clow Book, Sakura eventually made him a small little "home" of his complete with a bed of his own in her bottom desk drawer where he happily lives to this day. Interestingly, the drawer where Kero "lives" is just above the drawer where Sakura keeps the Clow Card Book.
- His third English voice actress, Wendee Lee (borrowed form), who also voiced T.K. Takaishi in Digimon Adventure, Neji Hyūga (young) in Naruto, Shura Kirigakure and Rin Okumura (young) in Blue Exorcist, Yoruichi Shihōin, Tatsuki Arisawa, Aaroniero Arruruerie and Menoly Mallia in Bleach, Karen Kasumi in X, MarineAngemon and Mako in Digimon Tamers, Miu Iruma in Danganronpa V3: Killing Harmony, Faye Valentine in Cowboy Behop, Basara Toujou (child) in The Testament of Sister New Devil, Bulma in Dragon Ball Z, Akane Owari in Super Danganronpa 2: Goodbye Despair, Lyndis and Princess Veronica in Fire Emblem: Heroes, Trish in Devil May Cry 5, Sonia Strumm in Mega Man Star Force, Female Robin in Fire Emblem: Awakening, Haruhi Suzumiya in The Melancholy of Haruhi Suzumiya, Fuuka Yamagishi in Person 3, Lady Zhen, Two Qiaos, and Empress Zhang in Dynasty Warriors, Konata Izumi in Lucky Star, Alpha 6 in Power Rangers: In Space, Bearmon and Swanmon in Digimon Frontier, Blanc in Hyperdimension Neptunia, Umi Ryuuzaki and Princess Emeraude in Magic Knight Rayearth, Sakura Shinguji in Sakura Wars, Angel in The Big O, Kei in Akira, Lizzie Hearts and Evil Queen in Ever After High, Chai Xianghua in Soulcalibur, Otamamon and Minomon in Digimon Adventure 02, Myōjin Yahiko in Rurouni Kenshin, Kiva Andru in Megas XLR, Tina Foster in Ai Yori Aoshi, Kagero in Ninja Scroll, Kiriko Masaki in Tenchi Muyo! GXP: Galaxy Police Transporter, Rushuna Tendo in Grenadier, Alyssa Ashcroft in Resident Evil: Outbreak, Rumi Hidaka in Perfect Blue, Kokomon in Digimon: The Movie, Svetlana Belikova in Resident Evil: Damnation, Kasane Kujiragi in Durarara!!, Valentine in Guilty Gear, Sekhmet and Black Dahlia in Skullgirls, Nefera de Nile in Monster High, Redeye in Power Rangers Time Force, Stag Beetle, Scorpina and Witchblade in Mighty Morphin Power Rangers, Impursonator in Power Rangers Zeo, Aribeth de Tylmarande in Neverwinter Nights, Kagato Jurai in Tenchi Muyo!, Lisa Hamilton in Dead or Alive 5, Chisato Hasegawa in The Testament of Sister New Devil, Athena Cykes in Phoenix Wright: Ace Attorney - Dual Destinies, Amida Arca and Masahiro Altland (young) in Mobile Suit Gundam IRON-BLOODED ORPHANS, Lisa Lisa in JoJo's Bizarre Adventure, Jin Kisaragi (young) in BlazBlue: Alter Memory, Kycilia Zabi in Mobile Suit Gundam: The Origin, Angela Balzac in Expelled from Paradise, Ayane in Dead or Alive: Dimensions, Shizuka Hio in Vampire Knight, Dokuro Mitsukai in Bludgeoning Angel Dokuro-Chan, Wonder Woman in Superman: Red Son, Centurion Aqua in Tales of Symphonia: Dawn of the New World, Kujin in Tribes of the East, Rozalin in Disgaea 2: Cursed Memories, Prunella Deegan in Arthur's Missing Pal, Inahime and Oichi in Samurai Warriors, BlackRose in .Hack, Kaolla Su in Love Hina, Urd in The Adventures of Mini-Goddess, Ryoko Mitsurugi in Samurai Girl: Real Bout High School, Lovestar in Mon Colle Knights, Christina Mackenzie in Mobile Suit Gundam 0080: War in the Pocket, Ciel in Lunar Legend Tsukihime, Mitsuka Yoshimine in DearS and Yui Hongo in Fushigi Yugi.
- His fourth English voice actress, Dave Wittenberg (true form), who also voiced Kakashi Hatake in Naruto,
- His fifth English voice actress, Mikaela Krantz (false form), who also voiced Momiji Sohma in the remake of Fruits Basket and Doll in Black Butler: Book of Circus.
- His sixth English voice actor, Christopher R. Sabat (true form), who also voiced Kurogane in Tsubasa: Reservoir Chronicle, Giroro in Sgt Frog, Ayame Sohma in Fruits Basket, Mondo Owada in Danganronpa: The Animation and Alex Louis Armstrong in Fullmetal Alchemist/Brotherhood, Piccolo, Vegeta, Shenron, Yamcha, Guru, Jeice, Burter, Nappa, Raditz, Recoome, King Piccolo, Hatchiyack, King Vegeta and Zarbon in Dragon Ball Z, All Might in My Hero Academia, Roronoa Zoro in One Piece, Elfman Strauss in Fairy Tail, William Rush in Time Crisis 4, Inferno Cop in Inferno Cop, Ddraig in High School DXD, Batou in Ghost in the Shell: Arise, Shep in Lumberjack Man, Yakumo Oomori in Tokyo Ghoul, VIRM in Darling In The FranXX, Arthur Watts in RWBY, Garland in Final Fantasy, Assistant Black and Colonel Silver in Dragon Ball, Azzurro Vanel in Black Butler, Vaccine Man in One Punch Man, Ushio Gasai in Mirai Nikki, Sakuya Togane in Psycho Pass, Yugo Tennouji in Steins;Gate, Syn Shenron in Dragon Ball GT and Rom in Show by Rock!!.