This is a build guide for Agnes Tachyon (Tach-nology) in Umamusume: Pretty Derby. Find out how to build Agnes Tachyon, her preferred tracks, distances, and style, as well as her basic character information, here!
| Agnes Tachyon Related Guides | |
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List of Contents
| Agnes Tachyon (Tach-nology) | |||||||||||||||||||
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| Overall | Ease (TB) | T.Trials | CM11 | ||||||||||||||||
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| Track Aptitude | |||||||||||||||||||
| Turf: A | Dirt: G | ||||||||||||||||||
| Distance Aptitude | |||||||||||||||||||
| Sprint: G | Mile: D | Med: A | Long: B | ||||||||||||||||
| Pace Aptitude | |||||||||||||||||||
| Front: E | Pace: A | Late: B | End: F | ||||||||||||||||
| Stat Growth | |||||||||||||||||||
| SPD: 20% | STA: 0% | POW: 0% | GUT: 10% | WIT: 0% | |||||||||||||||
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(1★ to 2★) |
Moderately recover endurance and slightly increase velocity for a moderate duration when sitting off the pace on a corner in the second half of the race. |
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(3★+) |
Recover endurance and moderately increase velocity for a moderate duration when sitting off the pace on a corner in the second half of the race. |
Following the upcoming balance adjustments on November 11, 2025, Agnes Tachyon's Unique Skill will now also increase her speed when it activates.
The unique skill has been observed to activate and provide stamina recovery and a velocity boost when the following conditions are met:
Due to the position requirements, the skill will see the most consistent activation for users running the Pace Chaser style.
| All Innate Skills |
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| Skill Per Potential Level |
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| Potential 2: Potential 3: Potential 4: Potential 5: |
| All Career Event Skills |
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| Training Tips |
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When training Agnes Tachyon, use the brand new Trackblazer (MANT) scenario, as this will allow you to get higher stats than before. Try to get 30-33 wins during your career runs, although you can race more for more coins and items.
The quickest rotation to make for Agnes Tachyon would be Medium-Long since she already has Long B aptitude. But it is recommended that you improve both her Long and Mile aptitudes to A. Having good aptitude in Mile will make it easier for Agnes Tachyon to secure more racing opportunities earlier and access to getting more Trackblazer epithets.
Trackblazer (Make a New Track) Scenario Guide
Running Agnes Tachyon as a Pace Chaser is the best and most flexible choice since her unique skill is better suited to that style. The Pace Chaser strategy also allows her to use Race Planner at Potential Lvl. 5 for Medium and longer races.
As you have Innate Recovery skills, as well as a Recovery Unique Skill, you can prioritize Speed skills when choosing which skills to learn. You can get a second Recovery Skill like Swinging Maestro for her Long races, but this is not required.
Increasing Agnes Tachyon's Potential level gives you access to powerful skills such as Dominator and Race Planner. If you do not have the Monies or materials to do so, reaching Potential Level 3 is enough to gain access to Dominator. This is especially useful for debuff builds.
Whenever possible, try to get Agnes Tachyon's Medium aptitude to S for competitive play such as Team Trials. On top of raising her aptitudes for Tracklbazer, try to look for Legacies that provide Medium sparks to give you chances in getting S grade Medium aptitude in inspiration events.
In normal career outside of Trackblazer, one of Agnes Tachyon's hidden events will change her career goal from the Japanese Derby to the NHK Mile Cup if her Mood at the time is Normal or worse.
This presents a big risk of her losing her career if you did not improve her Mile aptitude. To avoid racing in the NHK Mile Cup, make sure to improve her Mood before Early April of her Classic Year.
| 1200 | 800 | 1000 | 500 | 600 |
Building Agnes Tachyon as a Medium Pace Chaser is the best practical choice, since she can make use Race Planner (Potential Lv. 5) which gives the most value in her kit. This build has her focus towards those aptitudes, so you'll have to make your own adjustments if you will be building her differently, such as making her a Late Surger for more effect out of Dominator (Potential Lvl. 3).
If you are only planning to clear a career run with Agnes Tachyon, then you can aim for lower stat numbers, as the stats above are for Team Trials.
Training Guide: Which Stats to Train?
For Agnes Tachyon's Support Cards, we recommend running a mixed deck of 2 Speed and 2 Wit cards. The rest can be 2 Race Bonus fillers. The filler cards can be for any stat as long as you have at least 50 Race Bonus. You can opt for Super Creek (Piece of Mind) if you're still struggling to build stamina, or make use an extra Wit card for a 3 Wit setup.
Due to the nature of the Trackblazer (MANT) Scenario, it is important to prioritize cards with high Race Bonus.
This deck consists mostly of SR cards, and are meant for players who do not have many SSR Support Cards. Despite the lower rarity, this deck can still hold up and perform well in the latest scenario. Take advantage of the game's borrowing feature to borrow a powerful MLB SSR, like Matikane Fukukitaru (Touching Sleeves Is Good Luck! ♪).
These cards will help Agnes Tachyon levelup her needed Stats (especially with Rainbow/Friendship Training), as well as provide some needed skills. Try to prioritize cards with a high Race Bonus, as you want at least 50% Race Bonus in your deck.
If you plan to run the Unity Cup, we recommend using either a Speed-Wit deck or a Speed-Power deck to help Agnes Tachyon get the stats she needs.
Unity Cup (Aoharu Hai) Scenario Guide
These stats are enough to clear the URA Finale easily, as it provides enough Speed, Stamina, and Power for all of Agnes Tachyon's career races, especially when partnered with the correct skills.
As for the deck, you can either run a 4 Speed, 2 Stamina deck, or a 3 Speed, 3 Power deck if you can get Stamina sparks. Tazuna Hayakawa can also be used as an alternative card in exchange for a Power card.
| Recommended | |
|---|---|
| 18★ Stamina | |
| 3★ Medium 1★ Long (Trackblazer) 7★ Mile (Trackblazer) |
We recommend Stamina sparks for Agnes Tachyon to help her at least meet her Stamina requirements, even if you don't perform Stamina training as much.
For pink aptitudes, you'll want Medium sparks if you want to improve her Medium to S for running competitively. For covering the comfortable Mile-Medium-Long rotation race rchedule in Trackblazer, you'll at least want 1★ Long and 7★ Mile to get them all to A.
You can use either your own Veterans, or borrow the ones from your friends. If you do not have Veterans with full sparks, you can go with whatever you have access to.
For Medium, only 1 gold recovery skill is usually needed when you have 800 Stamina and above.
When going for Team Trials, the bare minimum is going for skills that can easily activate like Pace Chaser and Medium Corners. But you'll also want some strong skills at least to bring her to 1st place, such as Professor of Curvature.
For gold recovery, her Potential Lvl. 5 Race Planner is generally good enough since she already has a unique recovery skill. For inherited Unique Skills, the least that can be recommended is Red Shift since it's easy to activate. For additional competitive uniques, we recommend Triumphant Pulse, Lights of Vaudeville, or Barcarole of Blessings.
If you cannot get the recommended skills, you can replace them with similar skills that you have access to. You will just need to make sure that Agnes Tachyon can activate said skills in a race.
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 20 Stamina |
| Choice 2 | ・ 20 Speed |
| Choice | Outcome |
|---|---|
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Choice 1
(Let's think of another way.) |
・ 20 Wit |
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Choice 2
(Let's throw in the towel.) |
・ 20 Power |
| Choice | Outcome |
|---|---|
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Choice 1
(I'll take it.) |
・ 10 Stamina ・ 10 Guts ・ Fast Learner (Random) |
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Choice 2
((I'd best leave her be...)) |
・ 20 Wit ・ Fast Learner (Random) |
| Choice | Outcome |
|---|---|
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Choice 1
(What if you try thanking it?) |
・ 5 Speed ・ 5 Power |
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Choice 2
(What if you try accepting the gift?) |
・ 10 Guts |
| Choice | Outcome |
|---|---|
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Choice 1
(Stop!) |
・ 5 Power ・ 5 Wit |
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Choice 2
(Let me sit down in it first!) |
・ 10 Stamina |
| Choice | Outcome |
|---|---|
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Choice 1
(Let's tell her there's been a misunderstanding.) |
・ 5 Power ・ 5 Guts |
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Choice 2
(We should tell her to reconsider.) |
・ 5 Speed ・ 5 Wit |
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 10 Guts |
| Choice 2 | ・ 10 Wit |
| Choice 3 | ・ 10 Power |
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 10 Wit |
| Choice 2 | ・ 10 Speed |
| Choice | Outcome |
|---|---|
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Choice 1
(Wait a sec, hang in there!) |
・ 10 Guts |
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Choice 2
(I'll prepare something right away) |
・ 5 Speed ・ 5 Power |
| Choice | Outcome |
|---|---|
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Choice 1
(How about increasing your perceptive skills?) |
・ 10 Stamina |
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Choice 2
(How about increasing your dynamic visual acuity?) |
・ 10 Speed |
| Choice | Outcome |
|---|---|
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Choice 1
(We'll pass.) |
・ 10 Energy ・ 5 Skill Pts |
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Choice 2
(Success)
(Can't let them go to waste, right?) |
・ 30 Energy ・ 10 Skill Pts |
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Choice 2
(Fail)
(Can't let them go to waste, right?) |
・ 30 Energy ・ -5 Speed ・ 5 Power ・ 10 Skill Pts ・ Slow Metabolism |
| Choice | Outcome |
|---|---|
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Choice 1
(Let your research results prove them wrong.) |
・ 10 Wit ・ 15 Skill Pts |
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Choice 2
(Show them what makes you amazing.) |
・ Corner Adept ◯ Skill Hint |
| Choice | Outcome |
|---|---|
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Choice 1
(After her!) |
・ -20 Energy ・ 15 Stamina ・ 10 Guts |
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Choice 2
(Oh, looks like she's dropped her treasured Umamusume scrapbook!) |
・ 5 Energy ・ 5 Wit |
| Choice | Outcome |
|---|---|
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Choice 1
(Strength training, please.) |
・ 10 Power |
|
Choice 2
(Beach running, please.) |
・ 10 Guts |
| Choice | Outcome |
|---|---|
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Choice 1
(Let's think about our strategy for the races!) |
・ 10 Wit |
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Choice 2
(Let's celebrate with some mochi!) |
・ 20 Energy |
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Choice 3
(Let's pray at the shrine for good luck!) |
・ 20 Skill Pts |
| Choice | Outcome |
|---|---|
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Choice 1
(Today's a holiday, we should take it easy.) |
・ 30 Energy |
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Choice 2
(Let's get fortune slips!) |
・ 5 All Stats |
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Choice 3
(Yeah, let's go back and train!) |
・ 35 Skill Pts |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ 10 Energy ・ -2 Mood ・ Last trained stat and two other random stat -10 ・ Practice Poor (random) |
| Choice 2 (Success) | ・ Practice Perfect ◯ |
| Choice 2 (Fail) |
・ -3 Mood ・ 3 Random stat -10 ・ Practice Poor |
| Choice | Outcome |
|---|---|
|
Choice 1
(Humor her a little, will you?) |
・ -5 Energy ・ Last trained stat +5 ・ 5 Friendship with Director |
|
Choice 2
(I'll go talk her out of it.) |
・ 5 Energy |
| Choice | Outcome |
|---|---|
|
Choice 1
(That's probably best.) |
・ -1 Mood ・ Last trained stat -5 ・ Practice Poor (random) |
|
Choice 2
(Success)
(I'm not going easy on you!) |
・ Practice Perfect ◯ |
|
Choice 2
(Fail)
(I'm not going easy on you!) |
・ -1 Mood ・ Last trained stat -10 ・ Practice Poor (random) |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -25 Energy ・ 25 Skill Pts ・ Random Stat +4 |
| Choice 2 (Fail) |
・ -35 Energy ・ 25 Skill Pts ・ Random Stat +4 |
| Choice 2 (Success) |
・ -15 Energy ・ 25 Skill Pts ・ Random Stat +4 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -25 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice 2 (Fail) |
・ -35 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice 2 (Success) |
・ -15 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -25 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice 2 (Fail) |
・ -35 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice 2 (Success) |
・ -15 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -25 Energy ・ 10 Skill Pts |
| Choice 2 (Fail) |
・ -35 Energy ・ 10 Skill Pts |
| Choice 2 (Success) |
・ -15 Energy ・ 10 Skill Pts |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -20 Energy ・ 45 Skill Pts ・ Random Stat +8 |
| Choice 2 (Fail) |
・ -30 Energy ・ 45 Skill Pts ・ Random Stat +8 |
| Choice 2 (Success) |
・ -10 Energy ・ 45 Skill Pts ・ Random Stat +8 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -20 Energy ・ 35 Skill Pts ・ Random Stat +5 |
| Choice 2 (Fail) |
・ -30 Energy ・ 35 Skill Pts ・ Random Stat +5 |
| Choice 2 (Success) |
・ -10 Energy ・ 35 Skill Pts ・ Random Stat +5 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -20 Energy ・ 35 Skill Pts ・ Random Stat +5 |
| Choice 2 (Fail) |
・ -30 Energy ・ 35 Skill Pts ・ Random Stat +5 |
| Choice 2 (Success) |
・ -10 Energy ・ 35 Skill Pts ・ Random Stat +5 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -20 Energy ・ 30 Skill Pts ・ Random Stat +3 |
| Choice 2 (Fail) |
・ -30 Energy ・ 30 Skill Pts ・ Random Stat +3 |
| Choice 2 (Success) |
・ -10 Energy ・ 30 Skill Pts ・ Random Stat +3 |
| Choice | Outcome |
|---|---|
|
Choice 1
(This is the result of your hard work, Tachyon.) |
・ -15 Energy ・ 45 Skill Pts ・ Random Stat +10 |
|
Choice 2
(Fail)
(This is another step forward for your research.) |
・ -20 Energy ・ 45 Skill Pts ・ Random Stat +10 |
|
Choice 2
(Success)
(This is another step forward for your research.) |
・ -5 Energy ・ 45 Skill Pts ・ Random Stat +10 |
| Choice | Outcome |
|---|---|
|
Choice 1
(This is the result of your hard work, Tachyon.) |
・ -15 Energy ・ 35 Skill Pts ・ Random Stat +8 |
|
Choice 2
(Fail)
(This is another step forward for your research.) |
・ -20 Energy ・ 35 Skill Pts ・ Random Stat +8 |
|
Choice 2
(Success)
(This is another step forward for your research.) |
・ -5 Energy ・ 35 Skill Pts ・ Random Stat +8 |
| Choice | Outcome |
|---|---|
|
Choice 1
(This is the result of your hard work, Tachyon.) |
・ -15 Energy ・ 35 Skill Pts ・ Random Stat +8 |
|
Choice 2
(Fail)
(This is another step forward for your research.) |
・ -20 Energy ・ 35 Skill Pts ・ Random Stat +8 |
|
Choice 2
(Success)
(This is another step forward for your research.) |
・ -5 Energy ・ 35 Skill Pts ・ Random Stat +8 |
| Choice | Outcome |
|---|---|
|
Choice 1
(This is the result of your hard work, Tachyon.) |
・ -15 Energy ・ 30 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Fail)
(This is another step forward for your research.) |
・ -20 Energy ・ 30 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Success)
(This is another step forward for your research.) |
・ -5 Energy ・ 30 Skill Pts ・ Random Stat +5 |
| Notes on Hidden Events |
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The Hidden Event rewards listed below are the base values, and can increase based on your Race Bonus. Hidden Events do not occur in the following scenarios: ・Trackblazer (Make a New Track) |
| Event Conditions | Event Effects |
|---|---|
| Report: A Clear Gaze Participate in the Satsuki Sho |
Mood is Good or better: Mood is Normal or worse: |
Agnes Tachyon has a hidden event whose results will depend on her Mood after participating in the Satsuki Sho. If her mood is Good or better, she will get additional Wit. If her mood, however, is Normal or worse, her next race will switch from the Japanese Derby to the NHK Mile Cup.
Make sure to improve Agnes Tachyon's Mood before then, as her D aptitude for Mile races may make it difficult to clear the goal.
| Event Conditions | Event Effects |
|---|---|
| The Triple Crown Champion That Was Win the Triple Crown (Satsuki Sho, Japanese Derby, Kikuka Sho) |
All Stats +3 Tactical Tweak +2 |
| Goal | Race/Goal |
|---|---|
| Run in Junior Make Debut | Junior Make Debut |
| Place top 5 in Yayoi Sho |
Yayoi Sho
(Medium - 2000m) Classic Year Early Mar |
| Place top 5 in Satsuki Sho |
Satsuki Sho
(Medium - 2000m) Classic Year Early Apr |
| Place top 5 in Japenese Derby |
Japanese Derby (Tokyo Yushun)
(Medium - 2400m) Classic Year Late May |
| Place top 3 in Kikuka Sho |
Kikuka Sho
(Long - 3000m) Classic Year Late Oct |
| Place top 3 in Osaka Hai |
Osaka Hai
(Medium - 2000m) Senior Year Late Mar |
| Place top 3 in Takarazuka Kinen |
Takarazuka Kinen
(Medium - 2200m) Senior Year Late Jun |
| Place 1st in Tenno Sho (Autumn) |
Tenno Sho (Autumn)
(Medium - 2000m) Senior Year Late Oct |
| Place 1st in Arima Kinen |
Arima Kinen
(Long - 2500m) Senior Year Late Dec |
Agnes Tachyon"Life is an experiment, and we its guinea pigs. You, me, the other Umamusume—everyone!" | Voice Actress | Sumire Uesaka |
|---|---|---|
| Height | 159cm / 5'2" | |
| Weight | Refused measurement | |
| Birthday | Apr 13 | |
| Three Sizes | B 83 | W 55 | H 81 | |
| Equal parts researcher and runner, Agnes Tachyon pursues the limits of speed with the power of science. She will stop at nothing to quench her pure thirst for knowledge, performing all manner of experiments on living subjects—unauthorized, dangerous experiments, at that. Her extreme tunnel vision means that without someone to support her, day-to-day necessities quickly fall to the wayside. | ||
| Uniform | Racewear |
|---|---|
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Tach-nology |

| Height and Weight | Voice Actors | Three Sizes | List of Birthdays |
| 3-Star Characters | 2-Star Characters | 1-Star Characters |
please bring back the old formatting for the deck list. choosing to only display general cards with no explanation (and no replacements???) does not teach people why the cards are ideal for each character. choosing to exclude the URA finale scenario is restricting to the player (especially if they are new and find the cup overwhelming) and makes me want to use a different website.
Agnes Tachyon (Tach-nology) Build Guide and Character Info

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It shows which are the best cards for normal training, not just for the Unity Cup