Also known as, "Ayabe". Shes portrayed as a quiet, stoic, and gloomy Umamusume who actively avoids social interaction and prefers solitude, often coming across as distant or even abrasive to others. She is defined by a heavy sense of survivor guilt stemming from the fact that she was the surviving twin of a pair, leading her to view her racing career as a means to atone for her sister’s Unborn death. She is deeply self-flagellating, believing she does not deserve happiness or success unless it is dedicated entirely to her deceased sibling, which causes her to push away potential friends and maintain emotional barriers, Despite her cold exterior, she is highly intelligent, proud, and intellectually aloof, with a strong obsession with becoming the "brightest star" through rigorous training. While she appears cold and unfriendly, she possesses a hidden warmth and care for few such as her roommate Curren-chan and classmates Narita Top Road, though she struggles to express this affection openly. Her demeanor is so intense that she is sometimes regarded as "dangerous" if left alone for too long, a trait that contrasts with her genuine desire to connect, which is subtly revealed through her quirks like rating fuzzy slippers by their fluffiness, And she has pink eyes. She naturally wears a blue ear cover on her right Ear. Her primary racewear, known as "Starry Nocturne", features a blue dress with gold trim, ornaments, and belts at the front, along with two golden zipper pulls. Her blue skirt displays black stripes separating streaks of blue, with two star-shaped ornaments hanging from it. A white necktie bearing a star design hangs over her chest, while her left shoulder sports a navy blue cloth-like pauldron with gold trim.

She is an earnest, polite, and diligent honor student who serves as the class president in the Umamusume: Pretty Derby franchise. She is defined by her relentless perseverance and desire to meet the expectations of her fans and trainers, often putting others' needs before her own. Ultimately, she embodies quiet persistence and sportsmanship, earning admiration for her hard work even when she faces setbacks or finishes just off the podium. Her racewear features a pink base with purple zigzag patterns, reflecting her real-life horse’s silks. The outfit consists of a sleeveless two-tone top adorned with three golden diamond-shaped buttons and a jeweled pink gemstone ribbon at the neck.

She is fundamentally characterized as a "little devil" type sweet, clever, and playful, but with a mischievous edge. She is cheerful, loves attention, and bases almost every decision on what she perceives as the "cutest" option. Despite this lighthearted exterior, she is surprisingly mature, wise, and capable of offering sound advice to peers in distress. Shes surprisingly mature for her style, And is extremely polite and gives off a really kind vibe. defined by a striking contrast between her outward "cute" persona and her inner calculated perfectionism. She presents herself as a carefree, social media-obsessed idol, yet possesses a sharp, manipulative intelligence and an unyielding drive for excellence. Shes visually defined by her ash-gray hair, purple eyes, and a distinctive "little devil" aesthetic that incorporates black and red accents. Her design directly reflects her real-life counterpart, a gray mare whose coat darkened to near-black in youth and whitened with age.

She is a timid, pessimistic, and clumsy horse girl who struggles with low self-esteem, often feeling that things never go right for her. She is characterized by her drooping ears, nervous demeanor, and a strong desire to change herself and become more positive. Despite her anxiety and frequent mistakes, she possesses immense grit and determination, refusing to give up even when she consistently finishes in second place. She admires T.M. Opera O for her confidence and views her as a role model and rival, while looking up to Admire Vega as another inspiration. Doto is gentle and kind, particularly fond of animals (earning her the nickname "King of the Goats" in real life due to her retirement farm interactions)

Also known as, "Opera O". She is bold, energetic, and narcissistic character who refers to herself as the "strongest and fastest genius Uma Musume in the world." She talks in a theatrical, Fancy, Formal, and operatic manner, often declaring herself the "star of this play" and viewing life as a grand performance, She speaks with fancy words. Despite her extreme self-absorption, she is kind and supportive, never putting others down. Instead, she believes it is her duty to "enlighten" those who do not recognize their own beauty and strength, actively praising her rivals and friends like Meisho Doto, Narita Top road, And Admire Vega(Ayabe). Her confidence is so complete that she interprets all feedback as praise, and she possesses high emotional intelligence that allows her to lift up others even while competing fiercely for victory.