Agnes Tachyon is weird. If you’ve spent any time in the world of Uma Musume Pretty Derby, you know she’s not your typical horse girl. She’s a mad scientist with a glowing test tube and a penchant for "experimenting" on her trainer. But behind the tea-sipping and the lab coat lies one of the most mechanically interesting characters in the game. Honestly, she’s a powerhouse if you stop treating her like a generic runner.
Most players pick her up because she’s easy to get—she's a 2-star initial rarity, meaning almost everyone has her. But then they hit a wall. They try to build her for speed, they ignore her unique recovery mechanics, and they wonder why she’s gasping for air at the 2000m mark in an Arima Kinen run. This Uma Musume Agnes Tachyon guide is going to break down why she’s actually a surgical tool for mid-distance tracks and how you can stop failing her URA or Grand Masters scenarios.
Why Everyone Messes Up the Agnes Tachyon Build
It’s the stamina. It’s always the stamina.
Tachyon has a base growth rate of 20% in Speed and 10% in Guts. On paper, that looks like a green light to just hammer the Speed training button until your finger bleeds. Don't do that. Because her unique skill, U761, is a recovery ability, people get lazy. They think, "Oh, she heals herself, I can skimp on the blue icons."
Wrong.
Her unique skill triggers when she’s tired in the latter half of the race. If you haven't built a sufficient stamina base, she’ll trigger the heal too late to recover her positioning. You’re essentially trying to jump-start a car that’s already fallen off a cliff. To make her viable for CM (Champions Meeting) or high-level PVP, you need to treat her like a mid-distance specialist who occasionally pretends to be a long-distance runner.
📖 Related: The Problem With Roblox Bypassed Audios 2025: Why They Still Won't Go Away
She excels in the Leader (先行, Senko) position. While you can force her into a Betweener role, you’re throwing away her natural synergy. She needs to be near the front of the pack to trigger the vision and positioning skills that make her dangerous.
Understanding the Kit: It’s All About Logic
Tachyon’s skills aren't just random buffs; they are a sequence. Look at Restraint (束縛). It’s a debuff. It slows down the girls behind her. This is flavor-accurate because she’s literally "experimenting" on the field.
If you're looking at her awakening levels, Level 3 is the sweet spot for budget players. That’s where you get Speedster. This skill is non-negotiable. It’s an acceleration boost that triggers on corners during the final leg of the race. Since Tachyon usually lacks high-end natural acceleration compared to someone like Oguri Cap, Speedster is your bread and butter. If you haven't awakened her to at least Level 3, you're playing at a disadvantage. Level 5 gives you Life Management, which is... fine, but honestly, Speedster is the star of the show.
The Support Card Problem
You can’t just throw SSRs at Tachyon and hope for the best. Well, you can, but you won't win.
For a solid mid-distance build, you’re looking for a 3-2-1 or a 4-2 distribution. That’s 3 Speed cards, 2 Stamina cards, and 1 Friend/Group card (like Mejiro Ramonu or the current meta-relevant scenario card).
👉 See also: All Might Crystals Echoes of Wisdom: Why This Quest Item Is Driving Zelda Fans Wild
- The Speed Staples: Kitasan Black (SSR) is the obvious choice for the "Arc Maestro" access, but if you’re running Tachyon, you might want to look at Agnes Tachyon’s own SSR card—wait, no, you can’t use that on herself. Classic mistake. Instead, grab Maruzensky (SSR) for the "Top Runner" skill if you're pushing for a higher-position Leader build.
- The Stamina Factor: Super Creek (SSR) is still the queen here. You need Maestro of the Depths. Even with Tachyon’s built-in heal, having Maestro ensures she doesn't "burn out" during the mid-game transition.
I’ve seen people try to run her with full Intelligence (Wisdom) builds. It's a vibe, sure. She’s a scientist. It feels right. But unless you’re hitting at least 800 Stamina for a 2400m race, all that Intelligence just means she’ll be very smart about why she's losing.
Inheriting the Right Genes
This is where the Uma Musume Agnes Tachyon guide gets technical. Inheritance isn't just about stars; it's about compatibility.
Tachyon has great compatibility with Daiwa Scarlet and Vodka. It’s the classic rivalry. If you use Daiwa Scarlet as a parent, you’re often getting a nice boost to your starting stats and a higher chance of skill hint inheritance.
Focus on Stamina 9-star blue factors from your parents. Why? Because your training turns should be spent on Speed and Intelligence to take advantage of her 20% Speed growth. If you get your Stamina from inheritance, you don't have to waste as many turns in the gym, allowing you to maximize her Speed and Power.
Also, look for Red Factors that boost her Distance rating to "S". A 10% speed modifier for being Rank S in Mid-Distance is often the difference between a podium finish and a "Better Luck Next Time" screen.
✨ Don't miss: The Combat Hatchet Helldivers 2 Dilemma: Is It Actually Better Than the G-50?
The Race Schedule
Don’t just follow the targets. If you want a high-rank Tachyon, you need fans. You need G1 wins.
- Satsuki Sho: This is her home turf. 2000m. She should crush this.
- Japan Derby: 2400m. This is the first real test. If you haven't grabbed a recovery skill by now, you might struggle.
- Arima Kinen: This is the nightmare. 2500m at Nakayama. It’s technically "Long" distance, and Tachyon has a base B rating there. Use an inheritance factor to bump her Long Distance to A if you want to win this comfortably.
Real Talk: The "Tachyon Tech" Strategy
Here’s something most guides won't tell you: Tachyon is one of the best "debuff" carriers for team stadium.
Because her unique skill makes her very hard to disqualify via stamina depletion, you can actually load her up with "Red" skills (debuffs) like Speed Eater or Gaze. She stays in the pack, slows everyone else down, heals herself to stay relevant, and lets your primary ace (like a Mihono Bourbon or a Tokai Teio) take the win.
It’s a bit cruel. It’s very Agnes Tachyon.
Common Pitfalls to Avoid
- Ignoring Power: Speed is great, but if she gets boxed in during the final corner because her Power is 400, she’s done. Aim for at least 700-800 Power for Mid-Distance.
- Over-healing: Don't stack five gold recovery skills. Her unique + Maestro is usually enough. Anything more is a waste of Skill Points (PT) that could have gone into Speed buffs.
- Wrong Strategy: Never set her to "Runner" (逃げ). She doesn't have the kit for it. She will get overtaken in the last 200m every single time.
Actionable Steps for Your Next Run
Ready to build a better mad scientist? Follow this logic for your next training session:
- Prioritize Level 3 Awakening: Do not start a serious build without Speedster. It is her defining offensive tool.
- Select Stamina Parents: Aim for at least 6 to 9 stars in Stamina inheritance so you can ignore the Stamina training button for the first half of the year.
- The 1200/800/1000 Rule: For a competitive Mid-Distance Tachyon, aim for 1200 Speed, 800 Stamina, and 1000 Power. Anything extra goes into Intelligence.
- Bridge the Long Distance Gap: Use one Long Distance red factor during inheritance to turn her B into an A. This makes her Arima Kinen and potential long-distance CM appearances viable.
- Skill Priority: Unique Skill > Maestro of the Depths > Speedster > Mid-distance Straight/Corner.
Tachyon isn't just a meme or a tea enthusiast. She’s a high-floor, high-ceiling racer who rewards players who actually plan out their resource allocation. Stop guessing and start experimenting. After all, that’s exactly what she would do.