The Chairwoman of Tracen Academy! Behind her grand manner of speech and behavior lies a powerful will to support every Horse Girl. She earns the respect and gratitude of the students through her generous support, sometimes even spending her own personal fortune. ...However, she is frequently scolded by the Chairwoman's Secretary.

The Secretary to the Chairwoman of Tracen Academy. A kind supporter for Trainers, students, and the Chairwoman alike. Driven by the desire to provide a comfortable school life, she handles a wide range of tasks from paperwork to managing bulletin boards. She occasionally catches curfew breakers; her leg strength is as top-tier as her administrative skills.

An event producer who serves as the initiator and manager of the Grand Live Rebuilding Project. She possesses an extraordinary passion for the Grand Live and is running herself ragged to make the project a reality. It seems she was once a student at Tracen Academy and a Horse Girl who staked her youth on racing, but...?

An entity formed by an AI with the mindset of "Bravery." She holds the belief that each Horse Girl's unique weapon—their individuality—should be respected and cherished. She has a free-spirited and almost innocent personality, but contrary to surface impressions, she never loses her composure, combining approachability with the dignity of the Three Goddesses.

An entity formed by an AI with the mindset of "Affection." She possesses the maternal tolerance characteristic of the Three Goddesses, loving all and watching over them kindly, often anticipating their worries before they speak. That said, she doesn't just spoil others; she sometimes speaks and acts in ways that test them, but this too is a form of love born from a wish for their growth.

An entity formed by an AI with the mindset of "Discipline." Based on the belief that strength is what carves out the future, she has a strict, soldier-like personality. However, everything stems from the pure desire of the Three Goddesses to help the Horse Girls, and she is deeply trusted by those who realize this.

The first-ever Triple Crown Horse Girl in history. Born to a high-ranking noble family in England and raised in Japan, she realized her mission early on. After brilliantly achieving her goal of "creating a path of proud glory in the racing world," she retired after only one year of active competition. She is currently retired in her homeland, supporting the racing industry.

A pioneer of overseas racing who was the first from Japan to aim for the top of the Prix de l'Arc de Triomphe. She currently oversees the URA's Overseas Business Department. Many admire her as she flies around the world with diligence, chasing the dream of winning international races. She keeps a close eye on her relatives in the Symboli family.

A leading figure who sparked the first racing boom, loved and watched over by the entire nation as she grew. Currently, she continues to thrill fans as an idol. She is innocent and strong-hearted, having overcome any hardship with toughness. During her active days, she was an ironwoman also known as "Monster-chan."