Mr. C.B. is a unique Umamusume with long black-brown hair and a white silk hat decorated with a "CB" badge. Her parents are a trainer and his former Umamusume trainee, and she grew up valuing freedom and fun over racing titles or recognition. Mr. C.B. lives alone, is known for her free-spirited nature, and befriends Maruzensky and Symboli Rudolf, but often teases Katsuragi Ace. She pursues what interests her, is stubborn about her beliefs, and disdains being confined or forced by others. Enjoying running more than anything, she’s honest about her feelings and sometimes struggles to fit in with others. Inspired by the real triple crown racehorse Mr. C.B., she expresses herself with poetry and is secretly fond of kabuki plays.
Mr. C.B. has long, outward-curling dark brown hair. She wears a mini white silk hat with a "CB" badge and stands 166 cm tall, making her one of the taller Umamusume. Her form gives an even greater sense of height.
Her race outfit "Clear Bliss" matches the historical horse owner's colors: a green tube top with yellow chevrons, a green-yellow-top with a bare midriff, a white and green long sleeve on the right arm, and green pants with a slit and gold belt. She wears heeled shoes.
Her second racing outfit, "Splendid Stage Star," is themed for New Year and includes eye-catching red, kabuki-inspired details, and a striking red eye shadow.
Her casual wear includes a brown denim jacket, green ribbon with a "CB" badge tied around her right ear, shorts, and a rhombus-shaped necklace.
Mr. C.B. is laid-back, independent, and acts according to her mood. She prioritizes enjoyment in life and on the racetrack, showing little interest in status, popularity, or traditions. Despite her carefree attitude, she’s extremely stubborn about her racing style and ideals. She dislikes order, lying, or pretending. Mr. C.B. stands up to awkward situations, can't hide her dissatisfaction, and often confronts problems directly—even if it causes trouble.
She avoids group conformity, shows no special interest in the prestigious triple crown, and doesn't care about praise or criticism from others. For these reasons, many say her personality is closest to that of a real horse. She loves running—more than most—and can suddenly start running in her school uniform or agree to pace alongside another trainer’s Umamusume without hesitation.
While she dislikes being bound by rules, she recognizes that her stubborn and clumsy approach sometimes causes friction, but isn't eager to change. Housework is not her strong suit.
Her personal motto is to follow whatever seems interesting.
Mr. C.B. is based on the legendary Japanese racehorse of the same name, who was the third ever to win Japan's triple crown. Her mother was a champion Umamusume, and her father was a famous trainer—who had to elope with her mother because their marriage was opposed by her mother's family.
She is an only child with a good relationship with her parents, who sometimes visit her now that she lives alone. She doesn't live in a dorm but on her own, similar to Maruzensky, though the reasons for their single living situations are a bit unclear.
Mr. C.B. debuted visually in the anime in 2018 and appeared in manga and games thereafter, finally becoming a full game character in 2023.
She is skilled at writing short poems (tanka), traveling solo, and playing poker. She has trouble with keeping orderly, lying, or pretending. She can touch her ears with her feet, and her choice of tail treatment changes often.
Her specialty in racing is closing from behind (late charge), and she is best on turf, especially middle and long distances.
Mr. C.B. is close friends with Maruzensky and Symboli Rudolf, and often playfully annoys Katsuragi Ace, her rival and best friend. She’s also connected to Daiichi Ruby from shared parties when they were younger. She’s friendly but doesn't often stick with groups.
She’s one of the few who can comfortably speak to Mejiro Ramonu, known for her intimidating presence.
- Mr. C.B.'s birthday is April 7.
- Her bust-waist-hips are 84-55-80 cm.
- Shoe size: 25.0 cm on both feet.
- She uses photos of sunrise she took while sleepy as her phone wallpaper.
- Her parents once eloped due to family opposition.
- She secretly dislikes elevators—a reference to the real horse’s breeder managing a famous elevator near Kegon Falls.
- She loves going to kabuki plays and can often be found there.
- Her race-related songs, like "Dream Gale," emphasize her passion for freedom.
Her story mode and character events often include food-related scenes, like eating hamburgers, taiyaki, or egg-on-rice, and highlight her free and easy personality.
The famous poet and playwright Shuji Terayama inspired many references in her character, including her love for tanka and poetic homage in her skills.
"There’s a wind you only feel in races. It’s light, clear... and totally free. I’m Mr. C.B. Nice to meet you."
"Once the race starts—it’s our world, right?"
"That’s why there’s nowhere we can’t go. We can soar everywhere."
"Here she comes—Mr. C.B. in front! The ground is bouncing, Mr. C.B.! Cheerful, exhilarating, painting the turf! This is the real Mr. C.B.—never tied down!"
Introduction and First Appearance
Mr. C.B. first appeared in Umamusume: Pretty Derby anime in Season 1, episode 2. She was later featured in the Cinderella Gray spin-off manga and became an official in-game character in 2023.
Manga
Cinderella Gray
Mr. C.B. appears watching the Japanese Derby with Symboli Rudolf and Maruzensky, analyzing the race. She is called one of the "Three Crowned Umamusume" who entered the "Zone." She returns later in the manga to advise Inari One, who shares her racing style. C.B. is noted for skipping classes, barely earning enough credits, and is shown running with donuts for fun.
She is friendly with Gold Hannibal, a surprise connection.
Uma-Musume-shi (Slice-of-Life Manga)
In episode 47, C.B. helps Daiichi Ruby distribute extra taiyaki snacks, suggesting giving them to other Umamusume at the academy.
Anime
TV Series
In the main anime:
- Season 1: Briefly introduced alongside Symboli Rudolf and Narita Brian as a triple crown Umamusume.
- Season 2: Seen watching the Derby with Rudolf and Maruzensky. She gives a thumbs-up to a junior Umamusume, Cedar Blade.
ROAD TO THE TOP
She briefly appears as a silhouette among legendary winners in Narita Top Road’s story.
Miscellaneous
She is referenced in other short anime series and cameos, sometimes humorously as a character on mahjong tiles.
Game
Umamusume: Pretty Derby App
Mr. C.B. becomes fully playable, with high stats as a closer and great skill compatibility for turf, mid, and long distances. She appears in stories featuring other Umamusume, sometimes as a major rival for important races like the Arima Kinen. She gets multiple special outfits, including a kabuki-inspired New Year’s costume.
She starts as an NPC, but becomes recruitable after the Rose Team storyline in "Hot-Blooded Wacky Grand Festival!" event.
Support Card
Her support card "Dear Mr. C.B." is valued for strong training effects and powerful skills. It is told from the perspective of a defeated rival in the Satsuki Sho (Japanese 2000 Guineas).
Mr. C.B. is based on a real racehorse of the same name, who won the Japanese triple crown in the 1980s. The horse was especially famous for dramatic late-race charges, a distinctive beautiful look, and an inspiring underdog story—being the first triple crown winner by a domestically bred stallion.
The historical Mr. C.B. was an only foal, and unlike other famous racehorses, left few descendants as a stud. The real horse is remembered for his beauty and performance, and for capturing the hearts of fans as an "idol horse."
- Name: Mr. C.B.
- Birthday: April 7
- Height: 166 cm
- Measurements: B84, W55, H80 cm
- Shoe size: 25.0 cm (both feet)
- Specialty: Short poems, solo travel, poker
- Weakness: Orderly lines, lying or excuses
- Living situation: Lives alone
- Favorite: Kabuki theater
- Family: Only child, parents sometimes visit
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