Sirius Symboli is a standout Umamusume with star-like highlights in her bangs and a strong, confident attitude. She is known for her dedication to helping others and dreams of conquering the world stage. As both a charismatic leader and an ambitious competitor, she often finds herself supporting underdogs and taking in struggling students at Tracen Academy, even when it brings her into conflict with others. Her story explores themes of self-reliance, rivalry, and the challenges of guiding those who have been left behind. Sirius Symboli is closely tied to Nakayama Festa as her roommate and to Symboli Rudolf as a childhood friend and rival. Her background, design, and achievements in Umamusume: Pretty Derby make her a shining and memorable character.
Sirius Symboli has long, dark brown hair with a striking white star-shaped mesh in her bangs. She parts her hair into two sections at the back. Her eyes are red, and she wears a gold wavy earring on her right ear.
She stands 167 cm tall and wears shoes sized 25.0 cm on both feet.
Her measurements are B89, W55, H86.
Sirius Symboli’s race outfit is based on the real-life Symboli owner’s colors: a dark harness blazer over a black shirt, slacks, and black open-finger gloves, decorated with touches of red. Her right shoe is white—a nod to the horse Sirius Symboli’s unique leg coloring.
Her everyday outfit is a blue striped shirt with rolled-up sleeves, gray slit ankle pants, and red heeled loafers, all custom-made.
Sirius Symboli is an ambitious and confident girl who always aims for the top.
She is a bold leader, not afraid to stand out or speak her mind. She acts like an outsider but has a genuinely kind and caring nature, helping struggling students when others give up on them.
She’s stubborn and dislikes pointless discussions, flattery, and puns. Her strong self-reliance is rooted in her belief that everyone should choose their own path and take responsibility for it.
She sleeps with earplugs, and when irritated, she tends to crumple her tail.
Sirius Symboli is a member of the prestigious Symboli family and was given special education from a young age.
Despite her refined upbringing, she developed a rough and rebellious attitude, making her seem like an outlaw. However, she is actually very caring and often becomes a leader for students seen as delinquents or “failures.”
Her father changed her tutors daily, meaning she learned from many people.
She shares a room at Miho Dormitory with Nakayama Festa. The two share a love for competition and are often seen together, along with Gold Ship. All three have run in the Prix de l'Arc de Triomphe.
She is not a fan of small talk and only offers minimal courtesy to new group members.
She is good at savate (a French martial art) and training dogs.
Sirius Symboli holds a small aircraft pilot license and is a regular at several billiard halls both in Japan and abroad.
Her smartphone wallpaper is a quote from a poetry book.
She always stands up forcefully by kicking the floor before a race.
Sirius Symboli excels as a support character, offering strong charisma and leadership during training. She shines in mid-distance races, favoring the “leader” running style.
Her main strengths are in power and intelligence, letting her handle difficult situations and inspire others to join her in pursuing victory.
She’s also good at teaching studies to others, like Mr. C.B. and Katsuragi Ace.
Nakayama Festa
Nakayama Festa is Sirius Symboli’s roommate. They are kindred spirits, both enjoying risky bets and tense competitions.
Symboli Rudolf
Symboli Rudolf is her childhood friend and rival from the Symboli family. Their personalities often clash, especially over how to handle students with poor grades or records. Although called “oil and water,” they do not actually hate each other—they just see the world differently.
Other Students
She helps and leads students labeled as delinquents or underperformers, gathering them to train together and encouraging them to overcome their hardships.
She is also respected among her classmates and juniors, despite her rough reputation.
She sometimes teams up with students like Manhattan Cafe and even convinces lazy cadets, inspired by Tamamo Cross, to get back on track.
- Birthday: March 26
- Height: 167 cm
- Body measurements: B89, W55, H86
- Shoe size: 25.0 cm (both feet)
- Residence: Miho Dormitory
- Grade: High school division
- Good at: Savate and dog training
- Weak at: Pointless discussions, flattery, puns
- Needs earplugs to sleep
- Crumples tail when upset
- Learned from many different tutors because of her father’s orders
- Has a private rule that she offers only basic politeness to new group members
- Holds a pilot's license for small aircraft
- Regular at billiard halls, both in Japan and abroad
- Her pre-race ritual is standing up with a big stomp
“Stop talking nonsense! I’ll take the top spot in no time.”
“I am Sirius Symboli! No need for talk in races. Just watch. I’ll take the world and prove I’m the strongest!”
“Ha! This is the perfect timing! I praise you, god of races!”
Joining Tracen Academy
Sirius Symboli joins Tracen Academy after receiving special training since childhood. Although she has the manners of someone raised in a prestigious family, she often acts rough, using harsh language and taking the side of the outcasts.
She soon becomes a leader to students with a reputation for trouble—a group more misunderstood than truly bad, many struggling with personal problems or difficult family situations.
Conflict with the Student Council
As she gains influence, Sirius Symboli comes into open conflict with the student council, led by Symboli Rudolf and Air Groove. While Rudolf wants order, Sirius Symboli believes in fighting for fair chances—even if it means breaking rules, like taking over the training grounds for her group.
The council feels her methods are disruptive, and punishments for her followers get stricter, making it even harder for them to train. Despite this, Sirius Symboli stays their main hope.
Beliefs and Rivalries
Sirius Symboli believes firmly in self-determination. She regrets blaming others for her early defeats and now insists that her juniors always state what they want for themselves.
She never gives up on outcasts, often asking, “What do you want to do?” and helping them find their own answers.
Her rivalry with Symboli Rudolf is intense but not truly hateful—neither really dislikes the other, but their values just don’t match. They both wish to help their classmates, though in very different ways.
Manga and Anime Appearances
In Cinderella Gray, she’s shown as a bold billiards player, nicknamed “The Pioneer.” After winning the Japanese Derby, she battles internationally, earning fame for her solo journey.
She returns from overseas and faces off against Oguri Cap in major races like the Mainichi Okan and Japan Cup. Her personality is a bit softer in the manga but still full of guts.
In anime, Sirius Symboli debuts in the series Umayuru, often appearing beside her Symboli family rivals and Nakayama Festa.
In the Game
Sirius Symboli was first announced for the game before release, then appeared as a support card and later as a playable character. Her events often focus on clashing with the student council, taking in troubled students, and exploring how to create real opportunities for everyone.
She works with the trainer, whom she teasingly calls “puppy,” developing a special teacher-student bond built on mutual trust and earned respect.
She appears in several major game scenarios and even gets a theme song, “Legend-Changer,” which calls her the “Shining Sirius Star in the World.”
Sirius Symboli is based on the real-life racehorse Sirius Symboli, born in 1982. This horse was famous for winning the Japanese Derby, traveling to Europe to compete, and representing the Symboli family’s pride.
The real Sirius Symboli spent two years racing overseas, rarely out of the top finishers, and had a rivalry with Symboli Rudolf—their relationship filled with tension and respect.
After retiring, the horse lived a long and peaceful life, passing away at age 30, just like Symboli Rudolf did the year before.
- Birthday: March 26
- Height: 167 cm
- Measurements: B89 / W55 / H86
- Shoe Size: 25 cm both feet
- Residence: Miho Dormitory
- Good at: Savate, dog training
- Special license: Pilot for small aircraft
Sirius Symboli’s story is one of ambition, leadership, and helping those who have nowhere else to turn—proving that true strength isn’t just about winning races, but about lifting others up and never giving up hope.
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