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Fire Emblem Heroes (FEH)
Gromell Builds and Best IVs
★ Latest Banners - New Heroes: Harmonized CYL Ike, Lyn
☆ New Units - Harmonized Brave Ike, Harmonized Brave Lyn, Vanitas
☆ Free Units - N/A
This is a ranking page for the hero Gromell - Bolt Axe General from the game Fire Emblem Heroes (FEH). Read on to learn the best IVs (Individual Values), best builds (Inherit Skill), weapon refinement, stats at Lv 40, and more for Gromell.
List of Contents
Gromell Rating and Basic Information
| Overall Rating | 9.0/10 |
|---|---|
| Reroll Ranking (excluding Inherit Skill) |
- (▶Reroll Ranking) |
| Ranking (including Inherit Skill) |
A (▶FEH Tier List) |
Gromell - Bolt Axe General: Basic Information
| Color / Weapon Type / Move Type | |
|---|---|
| Rarity | |
| What Kind of Character Are They? | ・Bolt Axe has built-in adaptive damage and Distant Counter, deals 10 damage to allies and foes within 3Rx3C at start of turns 1-3, inflicts Atk/Def-5 and an Exposure effect to foes within 3Rx3C, inflicts Atk/Def penalty on foe and grants Gromell true damage and true DR during combat, and enables Range：2 Style. |
Gromell Skills at 5★
|
Might: 16 Range: 1 Grants Def+3. Calculates damage using the lower of foe's Def or Res. Unit can counterattack regardless of foe's range. At the start of turns 1-3, deals 10 damage to foes and allies within 3 columns centered on unit, excluding unit. For foes within 3 rows or 3 columns centered on unit, inflicts Atk/Def-5 on foe, foe suffers +X damage (X = the greater of total damage dealt to foe or total damage dealt to foe's target as of start of combat; excluding area-of-effect Specials; excluding damage dealt to Røkkr), and foe suffers guaranteed follow-up attacks during combat. At start of combat, if unit's HP ≥ 25%, inflicts penalty on foe's Atk/Def = 20% of unit's Def at start of combat, deals damage = 20% of unit's Def (including area-of-effect Specials), and reduces damage from foe's attacks by 20% of unit's Def during combat (excluding area- of-effect Specials). Unit can use the following 【Style】: Range：2 Style |
|
Cooldown Count = 4 Boosts damage dealt by 80% of unit’s Def. |
|
If unit’s HP ≤ 80% at start of combat, grants Atk/Def +7 during combat. |
|
If unit initiates combat, neutralizes effects that prevent unit's follow-up attacks and neutralizes unit's penalties to Atk/Spd during combat. |
Style Effect
| Range：2 Style |
|---|
| Unit can attack foes 2 spaces away (unit cannot attack adjacent foes). Cannot move through spaces within 2 spaces of foe that has triggered the Bulwark effect (does not apply if unit has a Pass skill). Unit suffers a counterattack if any of the following conditions are met: foe is armored with Range = 1, foe can counterattack regardless of unit's range, or foe's Range is the same as the distance between unit and foe. After-combat movement effects do not occur. Skill effect's Range is treated as 1. This Style can only be used if unit has Range = 1. This Style is disabled when unit has another 【Style】. After combat where this 【Style】 is used, removes this status. 【Style】 Change Style using the Style button at the bottom of the screen. A unit's Style is only active when that unit is taking an action. When unit is equipped with a skill that has a Style, unit will not be able to use skills like Duo Skills or Harmonized Skills. Style use is disabled when unit is deployed using Pair Up or when unit is equipped with multiple skills that have a Style. |
Gromell Best IVs
Recommended IVs
| Stat | Superboon/Superbane | IV Recommendation |
|---|---|---|
| HP (18) |
|
★★★☆☆ |
| Atk (10) |
|
★★★★★ |
| Spd (8) |
|
★★★☆☆ |
| Def (10) |
|
★★★★★ |
| Res (10) |
|
★★★☆☆ |
◯ = Stat gains +4 with a superboon, ✕= Stat goes down by -4 with a superbane, - = No assets or flaws
| See the IV Checker for All Units | Trait Fruits—How to Change IVs |
When using an Ascendant Floret, we recommend getting the next superboon if it fits the hero. If not, consider what stat your hero needs most.
Neutral IVs by default!
As a hero obtainable only through Grand Hero Battle, Gromell will always have neutral IVs by default. The only way to access IVs for this unit is through using Trait Fruits.
+Def / -Spd
The best IVs for Gromell are +Def and -Spd. Def is Gromell's most important stat at base 49, raised to base 53 with a superboon. Def is also the basis for Bolt Axe's checks, making it the ideal stat to boost with boons.
Gromell's base 30 Spd, while not terrible, is in the middling terrirory where investing in it won't help against fast foes, and leaving it alone or lowering it won't change matchups against slow foes. Thus, it is the safest bane to take.
Gromell Best Builds
Bruiser Gromell
| HOT | |
|---|---|
 ：
Bolt Axe
|
|
| Updated on 10/20/2025 | |
How to Use, Explanation
This build focuses on Gromell's Atk/Def stats, turning him into a sturdy unit that can function on both offense and defense. Brutal Tempest allows Gromell to position better for Soaring Echo.
Gromell Stats
Stat Rankings
| Neutral Stats at Lv. 40 (5★) | ||
|---|---|---|
| 200 | ||
| HP | 
42 |
Rank: 298/1322 |
| Atk | 
47 |
Rank: 65/1322 |
| Spd | 
30 |
Rank: 900/1322 |
| Def | 
49 |
Rank: 3/1322 |
| Res | 
32 |
Rank: 367/1322 |
Stat Values
Lv 40+10 Stats (5★)
| HP | Atk | Spd | Def | Res | Total | |
|---|---|---|---|---|---|---|
| +10 Merges W/ Skill Bonuses | 47 | 68 | 34 | 57 | 36 | 242 | Lv.40 +10 | 47 | 52 | 34 | 54 | 36 | 223 |
| HP | Atk | Spd | Def | Res | Total | |
|---|---|---|---|---|---|---|
| +HP Lv.40 +10 | 49 | 51 | 34 | 53 | 36 | 223 |
| +Atk Lv.40 +10 | 46 | 54 | 34 | 53 | 36 | 223 |
| +Spd Lv.40 +10 | 46 | 51 | 37 | 53 | 36 | 223 |
| +Def Lv.40 +10 | 46 | 51 | 34 | 57 | 36 | 224 |
| +Res Lv.40 +10 | 46 | 51 | 34 | 53 | 39 | 223 |
Stats at Lv 40
| HP | Atk | Spd | Def | Res | Total | |
|---|---|---|---|---|---|---|
| 5★- Adjusted for Skills | 42 | 63 | 30 | 52 | 32 | 219 |
| 5★ Lv.40 | 42 | 47 | 30 | 49 | 32 | 200 |
| 4★ Lv.40 | 39 | 45 | 27 | 47 | 29 | 187 |
| 3★ Lv.40 | 38 | 42 | 26 | 44 | 28 | 178 |
Initial Stats (with Skills)
| HP | Atk | Spd | Def | Res | Total | |
|---|---|---|---|---|---|---|
| 5★ Lv.1 | 18 | 26 | 8 | 13 | 10 | 75 |
| 4★ Lv.1 | 17 | 21 | 7 | 10 | 9 | 64 |
| 3★ Lv.1 | 17 | 15 | 7 | 9 | 9 | 57 |
Stat Comparison of Similar Heroes
| Hero |
HP |
Atk |
Spd |
Def |
Res |
Total |
|---|---|---|---|---|---|---|
| 40 | 48 | 46 | 45 | 21 | 200 | |
 Gromell
|
42 | 47 | 30 | 49 | 32 | 200 |
| 41 | 49 | 18 | 46 | 40 | 194 | |
| 41 | 42 | 18 | 37 | 34 | 172 | |
| 40 | 36 | 37 | 35 | 19 | 167 | |
| 45 | 38 | 25 | 34 | 19 | 161 | |
| 45 | 37 | 25 | 36 | 18 | 161 | |
| 42 | 29 | 29 | 32 | 26 | 158 | |
| 37 | 30 | 32 | 28 | 31 | 158 | |
| 43 | 34 | 26 | 35 | 19 | 157 | |
| 46 | 29 | 23 | 37 | 22 | 157 | |
| 46 | 38 | 25 | 32 | 16 | 157 |
Note: Stats bonuses from skills are not taken into account.
Gromell Roles, Strengths, and Weaknesses
Gromell Roles
Gromell is a close physical attacker (range = 1). Therefore, when not accounting for the Weapon Triangle, the amount of damage he deals will be equivalent to his Atk minus the foe's Def stat.
Gromell Strengths
Bolt Axe has built-in Distant Counter, Adaptive Damage, and Range: 2 Style
Gromell's exclusive weapon Bolt Axe has built-in adaptive damage and Distant Counter, allowing him to excel as a tank unit by retaliating against all foes while targeting their weaker defensive stat.
At the start of turns 1-3, Bolt Axe deals 10 damage to foes and allies within 3 columns centered on Gromell. This non-combat damage cannot be reduced and is a great way to soften enemies before combat, or even reduce their HP to be unable to meet certain thresholds.
However, it damaging allies as well can be detrimental, especially on turn 1 where Gromell is near his allies. To counteract this, bring a healing skill like Breath of Life 4 onto your team.
For all foes within 3 rows and 3 columns, Bolt Axe inflicts various penalties on them, giving them Atk/Def-5, having them take additional damage in combat and forcing them to suffer guaranteed follow-up attacks. This effect applying in a wide area allows Gromell to support his team even from far away, especially since you will be separating Gromell from his allies to avoid the non-combat damage effect.
In combat, Bolt Axe inflicts another Atk/Def penalty on his foe equal to 20% of his Def and grants Gromell bonus true damage and true damage reduction equal to 20% of his Def.
Finally, Bolt Axe grants Gromell access to Range：2 Style, allowing him to transition between being melee and ranged.
All in all, Bolt Axe is an incredibly stacked weapon. It being available on a free-to-play unit like Gromell is great for free-to-play or low spending players, giving them a hero they can easily merge up and remain competitive in PvP game modes.
Gromell Weaknesses
Weak to Bows
As a flying unit, Gromell takes 1.5x damage from bows and weapons effective on flying units. Be sure to keep them out of the range of archers and leave them to other units.
Should you Unlock Potential?
| Should You Unlock Potential for this Hero? |
|
|---|
We Recommend You Unlock Potential for Gromell - Bolt Axe General!
We can say with confidence that you should use Unlock Potential to bring Gromell - Bolt Axe General from 4 Stars to 5 Stars. Gromell - Bolt Axe General is a very useful versatile flying attacker, so we recommend you Unlock Potential for Gromell - Bolt Axe General if your team lacks a strong versatile flying attacker.
Gromell - List of Skills
Weapons
| Skill Name | Might | Range | Effect | Learned At |
|---|---|---|---|---|
| 6 | 1 | No Effect | 3★ | |
| 8 | 1 | No Effect | 3★ | |
| 11 | 1 | No Effect | 3★ | |
| 16 | 1 | Grants Def+3. Calculates damage using the lower of foe's Def or Res. Unit can counterattack regardless of foe's range. At the start of turns 1-3, deals 10 damage to foes and allies within 3 columns centered on unit, excluding unit. For foes within 3 rows or 3 columns centered on unit, inflicts Atk/Def-5 on foe, foe suffers +X damage (X = the greater of total damage dealt to foe or total damage dealt to foe's target as of start of combat; excluding area-of-effect Specials; excluding damage dealt to Røkkr), and foe suffers guaranteed follow-up attacks during combat. At start of combat, if unit's HP ≥ 25%, inflicts penalty on foe's Atk/Def = 20% of unit's Def at start of combat, deals damage = 20% of unit's Def (including area-of-effect Specials), and reduces damage from foe's attacks by 20% of unit's Def during combat (excluding area- of-effect Specials). Unit can use the following 【Style】: Range：2 Style |
5★ |
Assists
| This Hero has no Assist skills that can be learned. |
Specials
| Skill Name | Effect | Learned At |
|---|---|---|
| (Cooldown Count = 4) Boosts damage dealt by 50% of unit’s Def. | 3★ | |
| (Cooldown Count = 4) Boosts damage dealt by 80% of unit’s Def. | 4★ |
Passives
| Skill Name | Effect | Learned At |
|---|---|---|
| If unit’s HP ≤ 80% at start of combat, grants Atk/Def +3 during combat. | 3★ | |
| If unit’s HP ≤ 80% at start of combat, grants Atk/Def +5 during combat. | 3★ | |
| If unit’s HP ≤ 80% at start of combat, grants Atk/Def +7 during combat. | 4★ | |
| At the start of combat, if unit's HP = 100% and unit initiates combat, neutralizes effects that prevent unit's follow-up attacks and neutralizes unit's penalties to Atk/Spd during combat. | 3★ | |
| At the start of combat, if unit's HP ≥ 50% and unit initiates combat, neutralizes effects that prevent unit's follow-up attacks and neutralizes unit's penalties to Atk/Spd during combat. | 4★ | |
| If unit initiates combat, neutralizes effects that prevent unit's follow-up attacks and neutralizes unit's penalties to Atk/Spd during combat. | 5★ |
Gromell as a Source Hero
| Value of Skills | ★★★☆☆ |
|---|
Gromell has Brazen Atk/Def 3 and Flow Force 3 as inheritable options.
Unless you need Flow Force 3 fodder, we recommend merging Gromell instead, as he is quite a powerful free-to-play unit.
| List of Source Heroes | The Best Fodder Units |
Community Feedback
How would you rate Gromell?
If you have feedback about this hero page, let us know in the comments section below!
How to Get Gromell / Illustrations / Voice Actor / Quotes
How to Get Gromell
Obtain through a Grand Hero Battle
Gromell is a Hero who, for a limited time, can be obtained through completing a Grand Hero Battle for the first time. They do not appear in regular summons. After the event has ended, they can be obtained by using Heroic Grails.
Voice Actor and Illustrator Information
| Voice Actor (English) |
Adin Rudd |
|---|---|
| Illustrator | maCo / Trys Inc. |
| Appears In |
Illustration
 |
 |
 |
 |
FEH: Related Guides
See All Green Heroes
▶︎Return to the Green Heroes Page
All Types of Green Weapons
| Close-Range | Ranged |
|---|---|
 Axe |
 Green Tome |
 Green Breath |
 Green Dagger |
 Green Beast |
 Green Bow |
Comment
2 
twztid13 about 1 month
Wow, still no suggested builds for this hero....? Is the site dying, or is the person who usually does the updates just on vacation? Usually, this information is available on day 2 or so after release.
Author
Gromell Builds and Best IVs
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It sucks that the inheritance rating is only usually either 3, 4 or 5 stars (I've only ever seen either 3 or 5 stars, but I'm sure there's a 4 star somewhere) instead of using the full rating scale. This should be a 3 star if the entire scale is used, because flow force is rare & good on a free unit. In the 3 to 5 star scale, it should be 4 stars, tho, for that reason, IMO.