This is a build guide for Grass Wonder (Stone-Piercing Blue) in Umamusume: Pretty Derby. Find out how to build Grass Wonder, her preferred tracks, distances, and style, as well as her basic character information, here!
| Grass Wonder Related Guides | |
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List of Contents
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(2★) |
Moderately increase velocity with a strong turn of foot when passing another runner toward the back on the final straight. |
|---|---|
|
(3★+) |
Increase velocity with a strong turn of foot when passing another runner toward the back on the final straight. |
| 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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Grass Wonder has an A aptitude on the Late Surger running style. It is best to use this running style when running on races as this is her best style. Additionally, she has Innate and Potential skills that activate when she is running as a Late Surger, further making this her best running style.
To increase the amount of skills you immediately have access to on Grass Wonder, it is recommended to max out her Potential level. However, if you do not have the Monies or materials to do so, you can hold back on increasing her potentials.
Since Grass Wonder has 3 Medium Races during her career, we recommend using Legacy that has Medium Sparks if you want to win every race in her career since she only has B aptitude on this distance.
Legacy and Sparks Guide: Inheritance Explained
| 900 | 800 | 600 | 300 | 400 |
As Grass Wonder excels in Mile and Long races, with a specialty in being a Pace Chaser or Late Surger, it is recommended that you increase her Speed and Power to allow her to easily accelerate and overtake opponents. Increase her Stamina and Wit as well when possible.
It is important to note that if you cannot reach the stats recommended above, you can instead aim for a similar stat distribution. You can then compensate for the missing stats using skills. Additionally, if you are only planning on clearing a career run with Grass Wonder then you can aim for lower stat numbers, as the stats above are a baseline for Team Trials.
For Grass Wonder, a deck of 3 Speed, 2 Stamina, and 1 Wit works well, although you can swap the Wit card for Power if you would like, although Grass Wonder's +10% Power growth can help increase her Power even without a card.
These cards will help Grass Wonder level her needed Stats (especially with Rainbow/Friendship Training), as well as provide some needed skills like Swinging Maestro and Go with the Flow.
| Alternate Cards | ||
|---|---|---|
Eishin Flash (5:00 a.m.-Right on Schedule) Rarity: SR Type: Speed Strong Late Surger skills |
Manhattan Cafe (My Solo Drawn to Raindrop Drums) Rarity: SR Type: Stamina Long skills and decent green skills |
Marvelous Sunday (A Marvelous ☆ Plan) Rarity: SR Type: Wit General-purpose speed skills and debuffs |
Hishi Amazon (Reach to the Top!) Rarity: SR Type: Power Good for Pace Chasers and End Closers |
Agnes Tachyon (Experimental Studies on Subject A) Rarity: SR Type: Wit Great Medium speed skills and debuffs |
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If you do not have the cards from the recommended deck, you can replace them with a similar stat card that provides skills that Grass Wonder needs. These can be SSR cards, or even SR cards. Above are some of the SR cards that you can use in place of SSR Support cards.
| Recommended | |
|---|---|
| 9★ Stamina 9★ Power |
|
| 3★ Pace Chaser 3★ Late Surger 3★ Medium |
Grass Wonder will need Stamina and Power sparks as her races are mostly Medium and Long races. Prioritize getting Medium sparks to get it from B to A, which will help in clearing her career.
Afterward, get Pace Chaser or Late Surger sparks for her running style, although Late Surger may be ideal as her skill needs her to be toward the back to activate.
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.
| Recommended Skills | ||
|---|---|---|
Gourmand
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Swinging Maestro
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Go with the Flow
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Corner Adept ◯
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Straightaway Acceleration
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Homestretch Haste
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Grass Wonder can be a Pace Chaser or Late Surger, so getting maneuvering and speed skills are a must. A good maneuvering skill you can get is Go with the Flow.
For speed, consider getting Homestretch Haste and Straightaway Acceleration to help in the final spurt, as well as Corner Adept for the mid-race speed boosts. Lastly, get Swinging Maestro and Gourmand for good stamina recovery.
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 Grass Wonder can activate said skills in a race.
| Choice | Outcome |
|---|---|
|
Choice 1
(Give her a sneaky sign.) |
・ 20 Wit ・ Fast Learner (Random) |
|
Choice 2
(Cheer her on.) |
・ 10 Stamina ・ 10 Guts ・ Fast Learner (Random) |
| Choice | Outcome |
|---|---|
|
Choice 1
(There has to be more to it than that.) |
・ 10 Stamina ・ 10 Guts |
|
Choice 2
(It could mean "Green Tea" too, couldn't it?) |
・ 20 Power |
| Choice | Outcome |
|---|---|
|
Choice 1
(Be careful not to provoke them, okay?) |
・ 20 Speed |
|
Choice 2
(Go get 'em!) |
・ 20 Stamina |
| Choice | Outcome |
|---|---|
|
Choice 1
(Why don't you two dress up now, then?) |
・ 5 Speed ・ 5 Guts |
|
Choice 2
(How about we hold a race in kimonos?) |
・ 5 Stamina ・ 5 Wit |
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 10 Guts |
| Choice 2 | ・ 10 Stamina |
| Choice | Outcome |
|---|---|
|
Choice 1
(Do you think I can pull if off?) |
・ 5 Guts ・ 5 Wit |
|
Choice 2
(Let's choose some to decorate my office.) |
・ 5 Speed ・ 5 Stamina |
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 10 Power |
| Choice 2 | ・ 10 Wit |
| Choice 3 | ・ 10 Speed |
| Choice | Outcome |
|---|---|
|
Choice 1
(Because of the language barrier?) |
・ 5 Power ・ 5 Wit |
|
Choice 2
(Was it culture shock?) |
・ 10 Speed |
| Choice | Outcome |
|---|---|
|
Choice 1
(Be careful.) |
・ 5 Wit ・ 15 Skill Pts |
|
Choice 2
(Make the first move!) |
・ 10 Speed |
| Choice | Outcome |
|---|---|
|
Choice 1
(You need more strength.) |
・ 10 Power |
|
Choice 2
(What if you were more expressive?) |
・ 10 Guts |
| Choice | Outcome |
|---|---|
|
Choice 1
(Gotta beat the sale rush!) |
・ 5 Speed ・ 5 Stamina |
|
Choice 2
(Let's get the household supplies.) |
・ 5 Energy ・ 5 Wit |
| Choice | Outcome |
|---|---|
|
Choice 1
(Random)
(If you clear your mind, even fire will feel cool!) |
・ -1 Mood ・ 30 Guts ・ 1,500,000 CC +1 Skill Hint |
|
Choice 1
(Random)
(If you clear your mind, even fire will feel cool!) |
・ -10 Energy ・ 30 Guts ・ 1,500,000 CC +1 Skill Hint |
|
Choice 2
(Random)
(There are traditional ways to beath the heat!) |
・ -1 Mood ・ 30 Wit ・ Be Still +1 Skill Hint |
|
Choice 2
(Random)
(There are traditional ways to beath the heat!) |
・ -10 Energy ・ 30 Wit ・ Be Still +1 Skill Hint |
| Choice | Outcome |
|---|---|
|
Choice 1
(You know, gluttony is considered a sin.) |
・ 10 Energy ・ 5 Skill Pts |
|
Choice 2
(Success)
(You can't train well on an empty stomach.) |
・ 30 Energy ・ 10 Skill Pts |
|
Choice 2
(Fail)
(You can't train well on an empty stomach.) |
・ 30 Energy ・ -5 Speed ・ 5 Power ・ 10 Skill Pts ・ Slow Metabolism |
| Choice | Outcome |
|---|---|
|
Choice 1
(I'll take you up on that.) |
・ 10 Speed ・ 5 Wit |
|
Choice 2
(I'll take over as game master so you play, Grass.) |
・ Competitive Spirit ◯ Skill Hint |
| Choice | Outcome |
|---|---|
|
Choice 1
(How about a game of beach flags?) |
・ 10 Power |
|
Choice 2
(How about a battle of endurance?) |
・ 10 Guts |
| Choice | Outcome |
|---|---|
|
Choice 1
(Passing along my racing knowledge!) |
・ 10 Wit |
|
Choice 2
(Focusing physical conditioning!) |
・ 20 Energy |
|
Choice 3
(Helping you hone your skills.) |
・ 20 Skill Pts |
| Choice | Outcome |
|---|---|
|
Choice 1
(Pray for Grass's health.) |
・ 30 Energy |
|
Choice 2
(Pray that Grass becomes stronger.) |
・ 5 All Stats |
|
Choice 3
(Pray that Grass sharpens her running form.) |
・ 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
(Let's head back and do some laps.) |
・ -5 Energy ・ Last trained stat +5 ・ 5 Friendship with Director |
|
Choice 2
(Obeservation is a part of your training.) |
・ 5 Energy |
| Choice | Outcome |
|---|---|
|
Choice 1
(It's my fault for not paying closer attention.) |
・ -1 Mood ・ Last trained stat -5 ・ Practice Poor (random) |
|
Choice 2
(Success)
(Get some rest for now-there's always tomorrow.) |
・ Practice Perfect ◯ |
|
Choice 2
(Fail)
(Get some rest for now-there's always tomorrow.) |
・ -1 Mood ・ Last trained stat -10 ・ Practice Poor (random) |
| Choice | Outcome |
|---|---|
|
Choice 1
(You should rest for today, okay?) |
・ -25 Energy ・ 25 Skill Pts ・ Random Stat +4 |
|
Choice 2
(Success)
(We can talk on the way back.) |
・ -15 Energy ・ 25 Skill Pts ・ Random Stat +4 |
|
Choice 2
(Fail)
(We can talk on the way back.) |
・ -35 Energy ・ 25 Skill Pts ・ Random Stat +4 |
| Choice | Outcome |
|---|---|
|
Choice 1
(You should rest for today, okay?) |
・ -25 Energy ・ 20 Skill Pts ・ Random Stat +3 |
|
Choice 2
(Success)
(We can talk on the way back.) |
・ -15 Energy ・ 20 Skill Pts ・ Random Stat +3 |
|
Choice 2
(Fail)
(We can talk on the way back.) |
・ -35 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice | Outcome |
|---|---|
|
Choice 1
(You should rest for today, okay?) |
・ -25 Energy ・ 20 Skill Pts ・ Random Stat +3 |
|
Choice 2
(Success)
(We can talk on the way back.) |
・ -15 Energy ・ 20 Skill Pts ・ Random Stat +3 |
|
Choice 2
(Fail)
(We can talk on the way back.) |
・ -35 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice | Outcome |
|---|---|
|
Choice 1
(You should rest for today, okay?) |
・ -25 Energy ・ 10 Skill Pts |
|
Choice 2
(Success)
(We can talk on the way back.) |
・ -15 Energy ・ 10 Skill Pts |
|
Choice 2
(Fail)
(We can talk on the way back.) |
・ -35 Energy ・ 10 Skill Pts |
| Choice | Outcome |
|---|---|
|
Choice 1
(You did great.) |
・ -20 Energy ・ 45 Skill Pts ・ Random Stat +8 |
|
Choice 2
(Success)
(Push through to the top next time.) |
・ -10 Energy ・ 45 Skill Pts ・ Random Stat +8 |
|
Choice 2
(Fail)
(Push through to the top next time.) |
・ -30 Energy ・ 45 Skill Pts ・ Random Stat +8 |
| Choice | Outcome |
|---|---|
|
Choice 1
(You did great.) |
・ -20 Energy ・ 35 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Success)
(Push through to the top next time.) |
・ -10 Energy ・ 35 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Fail)
(Push through to the top next time.) |
・ -30 Energy ・ 35 Skill Pts ・ Random Stat +5 |
| Choice | Outcome |
|---|---|
|
Choice 1
(You did great.) |
・ -20 Energy ・ 35 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Success)
(Push through to the top next time.) |
・ -10 Energy ・ 35 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Fail)
(Push through to the top next time.) |
・ -30 Energy ・ 35 Skill Pts ・ Random Stat +5 |
| Choice | Outcome |
|---|---|
|
Choice 1
(You did great.) |
・ -20 Energy ・ 30 Skill Pts ・ Random Stat +3 |
|
Choice 2
(Success)
(Push through to the top next time.) |
・ -10 Energy ・ 30 Skill Pts ・ Random Stat +3 |
|
Choice 2
(Fail)
(Push through to the top next time.) |
・ -30 Energy ・ 30 Skill Pts ・ Random Stat +3 |
| Choice | Outcome |
|---|---|
|
Choice 1
(Even so. I'm glad you won!) |
・ -15 Energy ・ 45 Skill Pts ・ Random Stat +10 |
|
Choice 2
(Success)
(Let's train even harder!) |
・ -5 Energy ・ 45 Skill Pts ・ Random Stat +10 |
|
Choice 2
(Fail)
(Let's train even harder!) |
・ -20 Energy ・ 45 Skill Pts ・ Random Stat +10 |
| Choice | Outcome |
|---|---|
|
Choice 1
(Even so. I'm glad you won!) |
・ -15 Energy ・ 35 Skill Pts ・ Random Stat +8 |
|
Choice 2
(Success)
(Let's train even harder!) |
・ -5 Energy ・ 35 Skill Pts ・ Random Stat +8 |
|
Choice 2
(Fail)
(Let's train even harder!) |
・ -20 Energy ・ 35 Skill Pts ・ Random Stat +8 |
| Choice | Outcome |
|---|---|
|
Choice 1
(Even so. I'm glad you won!) |
・ -15 Energy ・ 35 Skill Pts ・ Random Stat +8 |
|
Choice 2
(Success)
(Let's train even harder!) |
・ -5 Energy ・ 35 Skill Pts ・ Random Stat +8 |
|
Choice 2
(Fail)
(Let's train even harder!) |
・ -20 Energy ・ 35 Skill Pts ・ Random Stat +8 |
| Choice | Outcome |
|---|---|
|
Choice 1
(Even so. I'm glad you won!) |
・ -15 Energy ・ 30 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Success)
(Let's train even harder!) |
・ -5 Energy ・ 30 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Fail)
(Let's train even harder!) |
・ -20 Energy ・ 30 Skill Pts ・ Random Stat +5 |
| Condition | Win the Satsuki Sho, Japanese Derby, and Kikuka Sho |
|---|---|
| Event Time | Classic Year Late Oct |
| Event Rewards |
・ Speed +15 ・ Power +15 ・ Wit +15 ・ Up-Tempo+1 |
| Race(s) to Win | |
|
Satsuki Sho
| 2000m (Medium)
Early April, Classic Year Japanese Derby (Tokyo Yushun) | 2400m (Medium) Late May, Classic Year Kikuka Sho | 3000m (Long) Late Oct, Classic Year |
|
| Goal | Race/Goal |
|---|---|
| Run in Junior Make Debut | Junior Make Debut |
| Place top 5 in Asahi Hai F.S, |
Asahi Hai Futurity Stakes
(Mile - 1600m) Junior Year Early Dec |
| Place top 5 in Japenese Derby |
Japanese Derby (Tokyo Yushun)
(Medium - 2400m) Classic Year Late May |
| Place top 5 in Japan C. |
Japan Cup
(Medium - 2400m) Classic Year Late Nov |
| Place top 3 in Arima Kinen |
Arima Kinen
(Long - 2500m) Classic Year Late Dec |
| Place top 3 in Takarazuka Kinen |
Takarazuka Kinen
(Medium - 2200m) Senior Year Late Jun |
| Place 1st in Mainichi Okan |
Mainichi Okan
(Mile - 1800m) Senior Year Early Oct |
| Place 1st in Arima Kinen |
Arima Kinen
(Long - 2500m) Senior Year Late Dec |
Grass Wonder"Noble and gallant, I march on... towards my ambitions." | Voice Actress | Rena Maeda |
|---|---|---|
| Height | 152cm / 4'11" | |
| Weight | No change | |
| Birthday | Feb 18 | |
| Three Sizes | B 77 | W 53 | H 84 | |
| Though born in America, her parents' love of Japanese culture influenced her to also love all things to do with the country—to the point of being called the spitting image of the ideal Japanese beauty. She speaks in a friendly manner and is easy to get along with, but her will is firm. Her determination to win is second to none. She shares a room with her close friend, El Condor Pasa. | ||
| Uniform | Racewear | Alternate 1 |
|---|---|---|
![]() |
Stone-Piercing Blue |
Saintly Jade Cleric |

| Height and Weight | Voice Actors | Three Sizes | List of Birthdays |
| 3-Star Characters | 2-Star Characters | 1-Star Characters |
Good day! Thank you for using our guides. Thank you for bringing this to our attention! We have updated the guide to reflect that Late Surger is the recommended style for Grass Wonder. We hope you continue using our guides!
Grass Wonder (Stone-Piercing Blue) Build Guide and Character Info



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Why recommend Gourmand, a Pace Chaser-specific skill, when you say to run her as a Late Surger? At least put a disclaimer saying that on the skills section.