Red
Red Tome
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4 Star
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Spd/Res Solo 3
Spd Opening 3
：
：
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General-to-Be
Summer Nino
Young Robin (M)
Nabata Tormod
Hayato
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Rearmed Ophelia
Salem
Hugh
Pelleas
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Azelle
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Effective Weapon
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Exclusive Skill
All-Range Counter
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Spd/Res Solo 1
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Fire Emblem Heroes (FEH)
Erk 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 Erk - Studious Mage 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 Erk.
List of Contents
| New Heroes - Bond of Trust Featured Heroes | |||
|---|---|---|---|
 Erk[9.0/10] |
 Farina[8.5/10] |
 Pent[8.5/10] |
 Louise[9.0/10] |
Erk Rating and Basic Information
| Overall Rating | 9.0/10 |
|---|---|
| Reroll Ranking (excluding Inherit Skill) |
C (▶Reroll Ranking) |
| Ranking (including Inherit Skill) |
A (▶FEH Tier List) |
Erk - Studious Mage: Basic Information
| Color / Weapon Type / Move Type | |
|---|---|
| Rarity | |
| What Kind of Character Are They? | ・Refined General-to-Be grants Atk/Spd+6 and 【Null Follow-Up】 to Erk and all nearby allies while also granting 【Treachery】and 【Canto (1)】 to Erk and all nearby magic and staff allies at the start of each turn, grants Erk bonus stats, a 50% DR piercing effect, true damage equal to 20% of his Spd, 7 true DR on his foe's first attack, and neutralizes his foe's Spd/Res bonuses during combat, and has a built-in Flared effect dealing 7 pre-combat damage and applying 【Divine Vein (Flame)】. |
Erk Skills at 5★
|
Might: 14 Range: 2 At start of turn, if unit is within 2 spaces of an ally, grants Atk/Spd+6 and 【Null Follow-Up】 to unit and allies within 2 spaces of unit for 1 turn, and also, grants【Treachery】and Canto 1 to unit and magic and staff allies within 2 spaces of unit for 1 turn. If unit initiates combat or if unit is within 2 spaces of an ally, grants Atk/Spd/Def/Res+5 to unit and reduces the percentage of foe's non-Special "reduce damage by X%" skills by 50% during combat (excluding area-of-effect Specials). |
|
Cooldown Count = 2 Treats foe's Def/Res as if reduced by 30% during combat. |
|
If unit is not adjacent to an ally, grants Spd/Res+6 during combat. |
|
At start of turn, grants Spd+6 to ally with the highest Spd for 1 turn. (Excludes unit.) |
Erk Best IVs
Recommended IVs
| Stat | Superboon/Superbane | IV Recommendation |
|---|---|---|
| HP (19) |
|
★★★☆☆ |
| Atk (19) |
|
★★★★☆ |
| Spd (9) |
|
★★★★★ |
| Def (6) |
|
★★☆☆☆ |
| Res (8) |
|
★★☆☆☆ |
◯ = 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.
+Spd/-Def
The best IVs for Erk are +Spd and -Def. A higher Spd stat allows Erk to get a ton of follow-up attacks on his foes. Additionally, his Spd is a superboon so you should take advantage of that as much as possible. Taking a bane in Def doesn't change the result of most of his matchups, thus it is ideal.
+Spd for a +10 Merge
We recommend a +Spd IV when merging Erk to 10. This is for the same reasons as above. You can also take a +Atk IV if you plan on using support and buffs to supplement his Spd.
Erk Best Builds
Offensive Erk
| HOT | |
|---|---|
 ：
Glimmer
 ：
-
|
 ：
-
|
| Updated on 06/07/2025 | |
How to Use, Explanation
This build stacks pre-combat damage with refined General-to-Be, Flared Sparrow, and Occultist's Strike, while having Fatal Smoke 4 to prevent recovery.
Budget Erk
 ：
Smite
：
Moonbow
：
-
|
 ：
Fury 3
 ：
Fury 3
：
-
|
How to Use, Explanation
A budget build for Erk using the cheap Fury and Desperation build to attack consecutively and defeat his foe before they can counterattack.
Erk Best Weapon Refine
Effect of Erk's Refined Weapon
| Exclusive Weapon Effect from Refining (Special Effect Type) | |
|---|---|
| SP: 400 | |
| Might: 14 Range: 2 HP: At start of turn, if unit is within 2 spaces of an ally, grants Atk/Spd+6 and 【Null Follow-Up】 to unit and allies within 2 spaces of unit for 1 turn, and also, grants【Treachery】and Canto 1 to unit and magic and staff allies within 2 spaces of unit for 1 turn. If unit initiates combat or if unit is within 2 spaces of an ally, grants Atk/Spd/Def/Res+5 to unit and reduces the percentage of foe's non-Special "reduce damage by X%" skills by 50% during combat (excluding area-of-effect Specials). If unit initiates combat or is within 2 spaces of an ally, deals 7 damage to foe as combat begins (activates only when unit can attack in combat; effects that reduce damage "during combat" do not apply; will not reduce foe's HP below 1), grants Atk/Spd/Def/Res+5 to unit, neutralizes foe's bonuses to Spd/Res, deals damage = 20% of unit's Spd (excluding area- of-effect Specials), and reduces damage from foe's first attack by 7 during combat ("first attack" normally means only the first strike; for effects that grant "unit attacks twice," it means the first and second strikes). If unit initiates combat, applies 【Divine Vein (Flame)】 on 5 spaces in a line centered on foe's space (oriented left to right based on the direction unit is facing) for 1 turn after combat.  ：500  ：200 |
|
We recommend the Special Effect Refine for General-to-Be
Refined General-to-Be grants Atk/Spd+6 and 【Null Follow-Up】 to Erk and all nearby allies while also granting 【Treachery】and 【Canto (1)】 to Erk and all nearby magic and staff allies at the start of each turn.
In combat, refined General-to-Be grants Erk Atk/Spd/Def/Res+10, a 50% damage reduction piercing effect, true damage equal to 20% of his Spd, 7 true damage reduction on his foe's first attack, and neutralizes his foe's Spd/Res bonuses.
More importantly, refined General-to-Be deals 7 pre-combat damage as combat begins and applies 【Divine Vein (Flame)】 on 5 spaces in a line centered on foe's space after combat. This Flared effect is similar from skills like Flared Sparrow and is useful in shredding the HP of bulky units before combat begins, as the pre-combat damage cannot be reduced.
Erk Stats
Stat Rankings
| Neutral Stats at Lv. 40 (5★) | ||
|---|---|---|
| 165 | ||
| HP | 
45 |
Rank: 107/1317 |
| Atk | 
35 |
Rank: 736/1317 |
| Spd | 
39 |
Rank: 368/1317 |
| Def | 
19 |
Rank: 989/1317 |
| Res | 
27 |
Rank: 539/1317 |
Stat Values
Lv 40+10 Stats (5★)
| HP | Atk | Spd | Def | Res | Total | |
|---|---|---|---|---|---|---|
| +10 Merges W/ Skill Bonuses | 50 | 51 | 44 | 23 | 32 | 200 | Lv.40 +10 | 50 | 39 | 44 | 23 | 32 | 188 |
| HP | Atk | Spd | Def | Res | Total | |
|---|---|---|---|---|---|---|
| +HP Lv.40 +10 | 52 | 39 | 43 | 23 | 31 | 188 |
| +Atk Lv.40 +10 | 49 | 42 | 43 | 23 | 31 | 188 |
| +Spd Lv.40 +10 | 49 | 39 | 47 | 23 | 31 | 189 |
| +Def Lv.40 +10 | 49 | 39 | 43 | 26 | 31 | 188 |
| +Res Lv.40 +10 | 49 | 39 | 43 | 23 | 35 | 189 |
Stats at Lv 40
| HP | Atk | Spd | Def | Res | Total | |
|---|---|---|---|---|---|---|
| 5★- Adjusted for Skills | 45 | 47 | 39 | 19 | 27 | 177 |
| 5★ Lv.40 | 45 | 35 | 39 | 19 | 27 | 165 |
| 4★ Lv.40 | 42 | 32 | 37 | 17 | 26 | 154 |
Initial Stats (with Skills)
| HP | Atk | Spd | Def | Res | Total | |
|---|---|---|---|---|---|---|
| 5★ Lv.1 | 19 | 19 | 9 | 6 | 8 | 61 |
| 4★ Lv.1 | 18 | 14 | 9 | 5 | 8 | 54 |
Stat Comparison of Similar Heroes
| Hero |
HP |
Atk |
Spd |
Def |
Res |
Total |
|---|---|---|---|---|---|---|
| 38 | 46 | 48 | 24 | 32 | 188 | |
| 40 | 46 | 45 | 36 | 16 | 183 | |
| 40 | 43 | 45 | 25 | 30 | 183 | |
| 39 | 43 | 45 | 24 | 31 | 182 | |
| 38 | 41 | 46 | 20 | 32 | 177 | |
| 39 | 44 | 36 | 25 | 32 | 176 | |
| 41 | 38 | 36 | 18 | 38 | 171 | |
| 40 | 38 | 42 | 27 | 24 | 171 | |
| 43 | 40 | 36 | 21 | 31 | 171 | |
| 38 | 37 | 33 | 23 | 35 | 166 | |
| 38 | 36 | 35 | 21 | 36 | 166 | |
| 41 | 37 | 39 | 26 | 23 | 166 | |
|
Erk
|
45 | 35 | 39 | 19 | 27 | 165 |
| 36 | 42 | 40 | 19 | 28 | 165 | |
| 40 | 40 | 39 | 21 | 25 | 165 | |
| 38 | 30 | 34 | 27 | 23 | 152 | |
| 39 | 35 | 35 | 21 | 21 | 151 | |
| 37 | 33 | 34 | 20 | 26 | 150 | |
| 33 | 34 | 31 | 17 | 33 | 148 | |
| 39 | 32 | 34 | 23 | 20 | 148 | |
| 34 | 32 | 34 | 15 | 32 | 147 |
Note: Stats bonuses from skills are not taken into account.
Erk Roles, Strengths, and Weaknesses
Erk Roles
Erk is a ranged magic attacker (range = 2). Therefore, when not accounting for the Weapon Triangle, the amount of damage he deals will be equivalent to his Atk minus the foe's Res stat.
Erk Strengths
Refined General-to-Be has built-in Flared effect, grants Null Follow-Up, Treachery, and Canto to himself and allies
Refined General-to-Be grants Atk/Spd+6 and 【Null Follow-Up】 to Erk and all nearby allies while also granting 【Treachery】and 【Canto (1)】 to Erk and all nearby magic and staff allies at the start of each turn.
In combat, refined General-to-Be grants Erk Atk/Spd/Def/Res+10, a 50% damage reduction piercing effect, true damage equal to 20% of his Spd, 7 true damage reduction on his foe's first attack, and neutralizes his foe's Spd/Res bonuses.
More importantly, refined General-to-Be deals 7 pre-combat damage as combat begins and applies 【Divine Vein (Flame)】 on 5 spaces in a line centered on foe's space after combat. This Flared effect is similar from skills like Flared Sparrow and is useful in shredding the HP of bulky units before combat begins, as the pre-combat damage cannot be reduced.
Erk Weaknesses
Low Def and Res Make Him Fragile
Erk has low Def and Res, which makes him vulnerable against any unit that attacks him.
Make sure you watch out where he is positioned after he's done attacking, or use a dancer to make him retreat to safety!
Should you Unlock Potential?
| Should You Unlock Potential for this Hero? |
|
|---|
We Recommend You Unlock Potential for Erk - Studious Mage!
We recommend that you use Unlock Potential to bring Erk - Studious Mage from 4 Stars to 5 Stars. Erk - Studious Mage is a very useful red tome nuke, so we recommend you Unlock Potential for Erk - Studious Mage if your team lacks a strong red tome nuke.
Erk - List of Skills
Weapons
| Skill Name | Might | Range | Effect | Learned At |
|---|---|---|---|---|
| 4 | 2 | No Effect | 3★ | |
| 6 | 2 | No Effect | 3★ | |
| 8 | 2 | If unit initiates combat, inflicts Atk/Spd/Def/Res-4 on foe during combat. | 3★ | |
| 12 | 2 | If unit initiates combat, inflicts Atk/Spd/Def/Res-4 on foe during combat. | 5★ | |
| 14 | 2 | At start of turn, if unit is within 2 spaces of an ally, grants Atk/Spd+6 and 【Null Follow-Up】 to unit and allies within 2 spaces of unit for 1 turn, and also, grants【Treachery】and Canto 1 to unit and magic and staff allies within 2 spaces of unit for 1 turn. If unit initiates combat or if unit is within 2 spaces of an ally, grants Atk/Spd/Def/Res+5 to unit and reduces the percentage of foe's non-Special "reduce damage by X%" skills by 50% during combat (excluding area-of-effect Specials). |
5★ |
Assists
| This Hero has no Assist skills that can be learned. |
Specials
| Skill Name | Effect | Learned At |
|---|---|---|
| (Cooldown Count = 3) Resolve combat as if foe suffered Def/Res -30%. | 3★ | |
| (Cooldown Count = 2) Treats foe's Def/Res as if reduced by 30% during combat. | 4★ |
Passives
| Skill Name | Effect | Learned At |
|---|---|---|
| If unit is not adjacent to an ally, grants Spd/Res+2 during combat. | 3★ | |
| If unit is not adjacent to an ally, grants Spd/Res+4 during combat. | 4★ | |
| If unit is not adjacent to an ally, grants Spd/Res+6 during combat. | 5★ | |
| At start of turn, grants Spd+2 to ally with the highest Spd for 1 turn. (Excludes unit.) | 3★ | |
| At start of turn, grants Spd+4 to ally with the highest Spd for 1 turn. (Excludes unit.) | 3★ | |
| At start of turn, grants Spd+6 to ally with the highest Spd for 1 turn. (Excludes unit.) | 4★ |
Erk as a Source Hero
| Value of Skills | ★☆☆☆☆ |
|---|
Erk has Spd/Res Solo 3 and Spd Opening 3 as his inheritable passives.
We recommend merging Erk instead, as he is a strong unit with his weapon refine.
How to Get Erk / Illustrations / Voice Actor / Quotes
How to Get Erk
Obtain Through Regular Summon
Erk is a Hero who can be pulled from any summon.
Note: Not currently a featured hero in any Summon events.
Current Focuses and Which You Should Pull From
Voice Actor and Illustrator Information
| Voice Actor (English) |
Jason Frazier |
|---|---|
| Illustrator | NA |
| Appears In |
Illustration
 |
 |
 |
 |
FEH: Related Guides
New Heroes: Bond of Trust
| Heroes from New Heroes - Bond of Trust | |||
|---|---|---|---|
| Erk [9.0/10] |
Farina [8.5/10] |
Pent [8.5/10] |
Louise [9.0/10] |
See All Red Heroes
▶︎Return to the Red Heroes Page
All Types of Red Weapons
| Close-Range | Ranged |
|---|---|
 Sword |
 Red Tome |
 Red Breath |
 Red Dagger |
 Red Beast |
 Red Bow |
Author
Erk Builds and Best IVs
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Yeah is someone gonna update this? Most people know the movement restrictions but for newcomers this could be mind boggling.