Agnes Tachyon, one of the most intriguing characters in Umamusume: Pretty Derby, embodies the fusion of intellect and speed. She is known as the “Mad Scientist” among Trainers, she approaches racing as an experiment in every stride, breath, and heartbeat meticulously analyzed in pursuit of perfection. Her personality reflects her methodical yet unpredictable nature, which is analytical and curious, yet capable of explosive bursts of brilliance on the racetrack. This duality makes her both a fascinating character to follow in the story and a strategically rewarding horse girl to train in gameplay.
In gameplay terms, Agnes Tachyon stands out as a Speed type specialist with a strong affinity for Medium distance races. Her growth bonuses and skill set favor aggressive pace control, smooth acceleration, and sustained top end speed as all crucial traits for a Chaser style runner. Unlike pure endurance types, she excels at maintaining a high velocity through technical track segments such as corners and straightaways, where proper skill activation can decide victory. Mastering her requires balancing speed training with stamina management and careful support-card synergy to ensure she performs consistently across different race conditions.
What truly sets Agnes Tachyon apart from other speed units is her emphasis on research and adaptability. Her support events, skill paths, and training bonuses encourage experimentation and the more the player refines her build, the stronger and more stable she becomes. This reflects her character’s lore: a perfectionist who views every race as data to be analyzed and improved upon. With the right strategy, support lineup, and stat distribution, she transforms from a curious scientist into a relentless racer capable of dominating the track.[1]
Umamusume Agnes Tachyon Build GuideMultiple databases list her as a Speed-biased unit; when leveled, her Speed & Wit growths are notably strong and Speed is her primary stat bonus. Build to maximize Speed first. [1]
Speed - 800+
Stamina - 400+
Power - 400+
Guts - 200+ is fine with enough stamina and recovery
Primary: high-value Speed support cards (SSR/regular speed cards that give lots of Speed + useful yellow/white skills). Use 1–2 Speed supports and fill remaining slots with Stamina/Wit or utility support.
Agnes Tachyon (support card): there are Agnes support card(s) with effects like race bonus / friendship bonus / energy recovery — these can synergize with her training if you want more skill points, mood/bond control, and race stat gains. If you have her SR/SSR support card(s), they can be used as a niche pick (check the card’s exact bonuses at max level).
Other useful supports: widely-cited picks include top-tier speed cards (depending on current meta lists) and cards that provide stamina or recovery events. See tier lists for up-to-date top picks.
Early (weeks 1–6): prioritize Speed training and pick a mix of Stamina trainings that give useful stats or event benefits. Secure early friendship/skill points. Avoid burning too many stamina points early.
Mid (weeks 7–15): add Stamina trainings when you plan the race schedule; secure the surge/acceleration skill slots; aim to hit your first major race with good base Speed and enough stamina to finish. Use races for extra stat/skill gains when you can.
Late (final stretch): push for final speed caps, get recovery/finish skills, use rest when needed to avoid burning out. Choose long-distance or mid-distance races, depending on the career route you picked.[1]
