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Ember, Heat Defender operator | Arknights: Endfield

Order of Steel Oath

Ember

Build guide · Arknights: Endfield

6-star
HeatDefenderGreat SwordSub DPS

English voice: Rhiannon Moushall

The best Ember build in Arknights: Endfield (Version 1.6) is Thunderberge with LYNX. Updated

Key facts

Ember is a 6-star Heat Defender operator from Order of Steel Oath, wielding a Great Sword. Sub DPS / Support / Sustain build, skill scalings, promotion…

Rarity
6★
Attribute
Heat
Class
Defender
Weapon type
Great Sword
Faction
Order of Steel Oath
Released
Version 1.0 · 2026-01-22
Best weapon
Thunderberge
Core set
LYNX
Tier list
T1

Arknights: Endfield 6★ Heat Defender Sub DPS

Ember build summary

Updated November 6, 2026

Thunderberge tops the weapon ranking for Ember at P0, ahead of Finishing Call, Former Finery and Seeker of Dark Lung. That order is prydwen.gg's, measured in play and condensed to a sentence each; every row of it sits under Weapons below.

Run LYNX on Ember.

Skill priority is COMBO SKILL > ULTIMATE = BASIC ATTACK > BATTLE SKILL. The Ultimate costs 100 Ultimate Energy, which is what an Ultimate Gain Efficiency target has to clear.

Ember stands in for Ardelia in the Mi Fu team, alongside Mi Fu, Chen Qianyu and Pogranichnik.

Role
Sub DPS / Support / Sustain
Best weapon
Thunderberge
Gear set
LYNX
Skill priority
COMBO SKILL > ULTIMATE = BASIC ATTACK > BATTLE SKILL
Ultimate Energy cost
100 Ultimate Energy
Key promotion material
8× Cosmagaric
Last updated
November 6, 2026
Full Ember build: weapons, gear and teams

Skills

Ember Sword Art of Assault, Basic Attack icon | Arknights: Endfield
Basic

Sword Art of Assault

BASIC ATTACK: An attack with up to 4 sequences that deals Physical DMG. As the controlled operator, Final Strike also deals 25 Stagger. DIVE ATTACK: Basic attack performed in mid-air becomes a dive attack that deals Physical DMG to nearby enemies. FINISHER: Basic attack performed near a Staggered enemy becomes a finisher that deals massive Physical DMG and recovers some SP.

Skill level

BATK SEQ 1 Multiplier
86%
BATK SEQ 2 Multiplier
120%
BATK SEQ 3 Multiplier
149%
BATK SEQ 4 Multiplier
184%
Finisher ATK Multiplier
900%
Dive ATK Multiplier
180%
All 12 levels
Scaling123456789101112
BATK SEQ 1 Multiplier38%42%46%50%54%57%61%65%69%74%79%86%
BATK SEQ 2 Multiplier54%59%64%70%75%80%86%91%96%103%111%120%
BATK SEQ 3 Multiplier66%73%80%86%93%99%106%113%119%128%138%149%
BATK SEQ 4 Multiplier82%90%98%106%114%122%131%139%147%157%169%184%
Finisher ATK Multiplier400%440%480%520%560%600%640%680%720%770%830%900%
Dive ATK Multiplier80%88%96%104%112%120%128%136%144%154%166%180%
Ember Forward March, Battle Skill icon | Arknights: Endfield
Skill

Forward March

  • 100 SP

A leap followed by a heavy slam that deals Heat DMG, Knock Down and Stagger to all enemies in a fan-shaped area. If Ember takes DMG from enemies during casting, the slam deals more Stagger upon hit.

Skill level

SP Cost
100
DMG Multiplier
390%
Stagger
10
Additional Stagger Dealt When Hit
10
All 12 levels
Scaling123456789101112
SP Cost100100100100100100100100100100100100
DMG Multiplier173%191%208%225%243%260%277%295%312%334%360%390%
Stagger101010101010101010101010
Additional Stagger Dealt When Hit101010101010101010101010
Ember Frontline Support, Combo Skill icon | Arknights: Endfield
Combo

Frontline Support

  • 19s cooldown

Leaps at the target enemy and unleashes a heavy slam that deals Physical DMG and Knock Down while giving HP treatment to the controlled operator. The attribute of Will increases the amount of HP treatment. Trigger: When the controlled operator is attacked.

Skill level

Cooldown
18
DMG Multiplier
230%
Stagger
10
Base Treatment
675
Treatment Increase per Will
1.58
Ultimate Energy Gain
10
All 12 levels
Scaling123456789101112
Cooldown191919191919191919191918
DMG Multiplier102%112%122%133%143%153%163%173%184%196%212%230%
Stagger101010101010101010101010
Base Treatment300360420480510540570600630645660675
Treatment Increase per Will0.70.840.981.121.191.261.331.41.471.511.541.58
Ultimate Energy Gain101010101010101010101010
Ember Re-Ignited Oath, Ultimate icon | Arknights: Endfield
Ultimate

Re-Ignited Oath

  • 100 Ultimate Energy

Slams the ground to deal Heat DMG to nearby enemies, while granting every teammate a Shield based on Ember's Max HP.

Skill level

Ultimate Energy Cost
100
DMG Multiplier
650%
Stagger
25
Shield Conversion Ratio (HP)
25%
Shield Duration (s)
10
All 12 levels
Scaling123456789101112
Ultimate Energy Cost100100100100100100100100100100100100
DMG Multiplier289%318%347%376%404%433%462%491%520%556%599%650%
Stagger252525252525252525252525
Shield Conversion Ratio (HP)18%18%18%20%20%20%22%22%22%25%25%25%
Shield Duration (s)101010101010101010101010

Talents

  1. Ember Forged, talent icon | Arknights: EndfieldElite 1

    Forged

    1. Elite 1

      Operator Strength +10.

    2. Elite 2

      Operator Strength +15.

    3. Elite 3

      Operator Strength +15.

    4. Elite 4

      Operator Strength +20.

  2. Ember Inflamed for the Assault, talent icon | Arknights: EndfieldElite 1

    Inflamed for the Assault

    1. Elite 1

      When casting the battle skill Forward March and the combo skill Frontline Support, Ember gains 30% Protection and is less likely to be interrupted.

    2. Elite 2

      When casting the battle skill Forward March and the combo skill Frontline Support, Ember gains 50% Protection and is less likely to be interrupted.

  3. Ember Pay the Ferric Price, talent icon | Arknights: EndfieldElite 2

    Pay the Ferric Price

    1. Elite 2

      When Ember receives DMG from the enemy, she gains ATK +6% for 7s. This effect can reach 3 stacks.

    2. Elite 3

      When Ember receives DMG from the enemy, she gains ATK +9% for 7s. This effect can reach 3 stacks.

  4. Ember Outfitting, talent icon | Arknights: EndfieldElite 1

    Outfitting

    1. Elite 1

      Activate this to let the operator equip blue quality gear

    2. Elite 2

      Activate this to let the operator equip purple quality gear

    3. Elite 3

      Activate this to let the operator equip gold quality gear

Stat talent

Strength
60

Forged at full unlock, summed across every tier. Elite rank gates the tiers as it gates the talents above.

Potentials

  1. Ember P1 Nomadic Fort, Potential | Arknights: EndfieldP1

    Nomadic Fort

    Talent Inflamed for the Assault improved: Protection effect +20%; hitting an enemy extends the duration by 1.5s.

  2. Ember P2 Steel-Hardened Veteran, Potential | Arknights: EndfieldP2

    Steel-Hardened Veteran

    Strength +20, Will +20

  3. Ember P3 Indomitable Front, Potential | Arknights: EndfieldP3

    Indomitable Front

    Combo skill Frontline Support improved: Restores the HP of another teammate with the lowest percentage HP at 50% of the base effect.

  4. Ember P4 Undying Embers, Potential | Arknights: EndfieldP4

    Undying Embers

    Ultimate Re-Ignited Oath improved: Ultimate Energy cost -15%.

  5. Ember P5 The Steel Oath, Potential | Arknights: EndfieldP5

    The Steel Oath

    Ultimate Re-Ignited Oath improved: Shield effect is multiplied by 1.2; while this Shield is active, the wielder gains ATK +10%.

Full bill

Level 90 and every skill at 12

814,900

T-Creds 15 material lines

Elite 4 and level 90

126,100

T-Creds 7 materials · 4 steps

All 4 skills at 12

688,800

T-Creds 4× the single-skill bill

Elite promotion

  1. Elite 1
    Pink Bolete, promotion material | Arknights: EndfieldPink Bolete ×3
    Protodisk, promotion material | Arknights: EndfieldProtodisk ×8

    1,600T-Creds

  2. Elite 2
    Red Bolete, promotion material | Arknights: EndfieldRed Bolete ×5
    Protodisk, promotion material | Arknights: EndfieldProtodisk ×25

    6,500T-Creds

  3. Elite 3
    Protoset, promotion material | Arknights: EndfieldProtoset ×24
    Ruby Bolete, promotion material | Arknights: EndfieldRuby Bolete ×5

    18,000T-Creds

  4. Elite 4
    Cosmagaric, promotion material | Arknights: EndfieldCosmagaric ×8
    D96 Steel Sample 4, promotion material | Arknights: EndfieldD96 Steel Sample 4 ×20
    Protoset, promotion material | Arknights: EndfieldProtoset ×36

    100,000T-Creds

Total to level 90

126,100 T-Creds

Cosmagaric, promotion material | Arknights: EndfieldCosmagaric ×8
D96 Steel Sample 4, promotion material | Arknights: EndfieldD96 Steel Sample 4 ×20
Pink Bolete, promotion material | Arknights: EndfieldPink Bolete ×3
Protoset, promotion material | Arknights: EndfieldProtoset ×60
Red Bolete, promotion material | Arknights: EndfieldRed Bolete ×5
Ruby Bolete, promotion material | Arknights: EndfieldRuby Bolete ×5
Protodisk, promotion material | Arknights: EndfieldProtodisk ×33

Skill materials

  1. → 2
    Kalkodendra, promotion material | Arknights: EndfieldKalkodendra ×1
    Protoprism, promotion material | Arknights: EndfieldProtoprism ×6

    1,000T-Creds

  2. → 3
    Kalkodendra, promotion material | Arknights: EndfieldKalkodendra ×2
    Protoprism, promotion material | Arknights: EndfieldProtoprism ×12

    2,700T-Creds

  3. → 4
    Chrysodendra, promotion material | Arknights: EndfieldChrysodendra ×1
    Protoprism, promotion material | Arknights: EndfieldProtoprism ×16

    3,200T-Creds

  4. → 5
    Chrysodendra, promotion material | Arknights: EndfieldChrysodendra ×1
    Protoprism, promotion material | Arknights: EndfieldProtoprism ×21

    4,200T-Creds

  5. → 6
    Chrysodendra, promotion material | Arknights: EndfieldChrysodendra ×2
    Protoprism, promotion material | Arknights: EndfieldProtoprism ×27

    5,400T-Creds

  6. → 7
    Protohedron, promotion material | Arknights: EndfieldProtohedron ×6
    Vitrodendra, promotion material | Arknights: EndfieldVitrodendra ×1

    8,200T-Creds

  7. → 8
    Protohedron, promotion material | Arknights: EndfieldProtohedron ×8
    Vitrodendra, promotion material | Arknights: EndfieldVitrodendra ×1

    10,500T-Creds

  8. → 9
    Protohedron, promotion material | Arknights: EndfieldProtohedron ×15
    Vitrodendra, promotion material | Arknights: EndfieldVitrodendra ×2

    18,000T-Creds

  9. → 10
    Blighted Jadeleaf, promotion material | Arknights: EndfieldBlighted Jadeleaf ×3
    Mark of Perseverance, promotion material | Arknights: EndfieldMark of Perseverance ×1
    Quadrant Fitting Fluid, promotion material | Arknights: EndfieldQuadrant Fitting Fluid ×6
    Protohedron, promotion material | Arknights: EndfieldProtohedron ×15

    24,000T-Creds

  10. → 11
    Blighted Jadeleaf, promotion material | Arknights: EndfieldBlighted Jadeleaf ×6
    Mark of Perseverance, promotion material | Arknights: EndfieldMark of Perseverance ×2
    Quadrant Fitting Fluid, promotion material | Arknights: EndfieldQuadrant Fitting Fluid ×16
    Protohedron, promotion material | Arknights: EndfieldProtohedron ×24

    30,000T-Creds

  11. → 12
    Blighted Jadeleaf, promotion material | Arknights: EndfieldBlighted Jadeleaf ×12
    Mark of Perseverance, promotion material | Arknights: EndfieldMark of Perseverance ×3
    Quadrant Fitting Fluid, promotion material | Arknights: EndfieldQuadrant Fitting Fluid ×36
    Protohedron, promotion material | Arknights: EndfieldProtohedron ×50

    65,000T-Creds

One skill at 12

172,200 T-Creds

Blighted Jadeleaf, promotion material | Arknights: EndfieldBlighted Jadeleaf ×21
Mark of Perseverance, promotion material | Arknights: EndfieldMark of Perseverance ×6
Quadrant Fitting Fluid, promotion material | Arknights: EndfieldQuadrant Fitting Fluid ×58
Chrysodendra, promotion material | Arknights: EndfieldChrysodendra ×4
Kalkodendra, promotion material | Arknights: EndfieldKalkodendra ×3
Protohedron, promotion material | Arknights: EndfieldProtohedron ×118
Vitrodendra, promotion material | Arknights: EndfieldVitrodendra ×4
Protoprism, promotion material | Arknights: EndfieldProtoprism ×82

All 4 skills at 12

688,800 T-Creds

Blighted Jadeleaf, promotion material | Arknights: EndfieldBlighted Jadeleaf ×84
Mark of Perseverance, promotion material | Arknights: EndfieldMark of Perseverance ×24
Quadrant Fitting Fluid, promotion material | Arknights: EndfieldQuadrant Fitting Fluid ×232
Chrysodendra, promotion material | Arknights: EndfieldChrysodendra ×16
Kalkodendra, promotion material | Arknights: EndfieldKalkodendra ×12
Protohedron, promotion material | Arknights: EndfieldProtohedron ×472
Vitrodendra, promotion material | Arknights: EndfieldVitrodendra ×16
Protoprism, promotion material | Arknights: EndfieldProtoprism ×328

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