What attribute is Ember?

Ember is a 6-star Heat operator of the Defender class, from Order of Steel Oath, wielding a Great Sword, released in version 1.0.

What stat does Ember scale on?

Ember's skills multiply ATK. That is read from the scaling rows on the Battle Skill and Ultimate, not from the skill description, so it reflects what the game actually multiplies rather than what the text mentions.

What is the best weapon for Ember?

Thunderberge is the closest fit on the data: it is a 6-star Great Sword with 495 base ATK at level 90, and its skills act on ATK. Industry 0.1 is the best 4-star alternative.

How much does it cost to max Ember's skills?

Taking one combat skill from level 1 to 12 costs 172,200 T-Creds and 21× Blighted Jadeleaf among other materials. The Materials tab lists every item per level.

What does Ember P1 do?

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

Ember, Heat Defender operator | Arknights: Endfield

All operators

Order of Steel Oath

Ember

Build guide · Arknights: Endfield

HeatDefenderGreat SwordSub DPS

English voice: Rhiannon Moushall

The best Ember build in Arknights: Endfield (Version 1.5) is Thunderberge with LYNX. Updated September 20, 2026

Key facts

The best Ember build in Arknights: Endfield (Version 1.5) is Thunderberge with LYNX. 6-star Heat Defender operator. Skills and Potentials are below.

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

Where these rankings come fromThe weapon order, gear sets and Potential verdicts on this tab are prydwen.gg’s, measured in play and condensed to a sentence each. Relative damage figures are ratios against the bottom of each ranking, not absolute numbers, and each one holds only for the Potential and team its row states. Everything else (base stats, skill text, material totals) is read from the game’s own data.

Weapons

5 ranked

BISThunderberge

Ranked first at P0

Ember's Signature stacks defensive stats that boost her Ultimate's shielding, and its Weapon Effect turns her Combo Skill heal into a 15-second Shield too, making it her best all-around survival weapon.

495

Base ATK · lv 90

50 at lv 1

Ranked first at P0

#2Finishing Call

Ranked #2 at P5

Finishing Call leans its passive into defense and sustain, mostly boosting Combo Skill healing, making it one of the top picks for maximizing Ember's healing output.

411

Base ATK · lv 90

42 at lv 1

Ranked #2 at P5

Finishing Call leans its passive into defense and sustain, mostly boosting Combo Skill healing, making it one of the top picks for maximizing Ember's healing output.

#3Former Finery

Ranked #3 at P0

Former Finery stacks heavy defensive passive stats plus healing, and its Weapon Effect adds an extra heal when Ember is hit while a protection-based Combo or Battle Skill is active, a small boost to her sustain.

495

Base ATK · lv 90

50 at lv 1

Ranked #3 at P0

#4Seeker of Dark Lung

Ranked #4 at P5

Ember can't use this weapon's Weapon Effect, but its passive stats, Energy Regen included, still make it worth running if you'd rather have more Ultimates in a fight than the defensive effects above.

411

Base ATK · lv 90

42 at lv 1

Ranked #4 at P5

Ember can't use this weapon's Weapon Effect, but its passive stats, Energy Regen included, still make it worth running if you'd rather have more Ultimates in a fight than the defensive effects above.

#5Industry 0.1

Ranked #5 at P5

Industry 0.1 is a last resort when none of the other options are available, carrying the right passive stats but at much lower values, leaving it well behind every other choice.

341

Base ATK · lv 90

34 at lv 1

Ranked #5 at P5

Industry 0.1 is a last resort when none of the other options are available, carrying the right passive stats but at much lower values, leaving it well behind every other choice.

Gear

1 sets

CoreLYNX

LYNX raises Ember's healing output and gives her and the team a strong defensive three-piece bonus plus extra energy for faster Ultimates, though maxing sustain isn't the only way to build her.

3PC3-piece set effect: Wearer's HP Treatment Efficiency +20%. After the wearer gives HP treatment to an allied target, that target also gains 15% DMG Reduction against all types of DMG for 10s. If the said treatment exceeds the target's Max HP, the target gains 30% DMG Reduction against all types of DMG. The aforementioned effects cannot stack.

Skill priority

Off Field

#1
COMBO SKILL
Max first
#2
ULTIMATE = BASIC ATTACK
Then
#3
BATTLE SKILL
Next

Best Potentials

3 worth pulling

P1Nomadic Fortworth pulling
P2Steel-Hardened Veteran
P3Indomitable Frontworth pulling
P4Undying Embers
P5The Steel Oathworth pulling

P1Top pick
Nomadic Fort
This Potential raises Ember's Protection effect from 50% to 70% and lets it linger briefly after a Combo or Battle Skill hit, helping her survive in teams chasing her Battle Skill's extra Stagger, but it does little elsewhere.
In game
Talent Inflamed for the Assault improved: Protection effect +20%; hitting an enemy extends the duration by 1.5s.
P3
Indomitable Front
This Potential lets Ember's Combo Skill heal extend beyond the main field operator, also healing the team's lowest-HP operator for 50% of that amount, a major upgrade to how well she can sustain the team.
In game
Combo skill Frontline Support improved: Restores the HP of another teammate with the lowest percentage HP at 50% of the base effect.
P5
The Steel Oath
This Potential multiplies Ember's Ultimate shield amount by 1.2 and adds a small ATK% boost on top.
In game
Ultimate Re-Ignited Oath improved: Shield effect is multiplied by 1.2; while this shield is active, the wielder gains ATK +10%.

Every Potential Ember has, in full, is on the Kit tab. This is only which of them are worth the pulls.

Teams

3 teams

Mi Fu team

Physical · Vulnerable and CrushStands in for Ardelia

Mi Fu groups and Crushes in the same rotation, so Physical finally has an answer to multi-enemy stages without giving up its burst. Chen Qianyu builds the Vulnerable stacks fast enough that the squad rarely waits on them, and the fourth slot flexes between Pogranichnik’s SP and Ardelia’s healing depending on what the stage needs.

Mi FuMain DPS · Crush
Chen QianyuLift · Stagger
PogranichnikVanguard · SP and Breach
ArdeliaSupporter · HP treatmentor Ember

Da Pan team

Physical · Lift into CrushStands in for Ardelia

Da Pan carries both halves of the Physical loop, Lift to stack Vulnerable and Crush to spend it, which is rare enough at 5-star to build a squad around. Chen Qianyu doubles the stacking rate, and the last two slots flex between SP and healing depending on the stage.

Da PanMain DPS · Lift and Crush
Chen QianyuLift · Stagger
PogranichnikVanguard · SP and Breach
ArdeliaSupporter · HP treatmentor Ember

Endministrator team

Physical · the standard-pool squadStands in for Ardelia

Every slot here comes from the standard pool or the story, so it is the squad a new account can actually field. Endministrator Crushes what Chen Qianyu Lifts, and Pogranichnik’s Breach spends whatever is left before the stacks reset.

EndministratorMain DPS · Crush
Chen QianyuLift · Stagger
PogranichnikVanguard · SP and Breach
ArdeliaSupporter · HP treatmentor Ember

All teams, with every replacement

Arknights: Endfield 6★ Heat Defender Sub DPS

Ember build summary

Updated September 20, 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
Alternatives: Finishing Call, Former Finery, Seeker of Dark Lung
Gear set: LYNX
Skill priority: COMBO SKILL > ULTIMATE = BASIC ATTACK > BATTLE SKILL
Best team: Mi Fu, Chen Qianyu, Pogranichnik, Ardelia
Ultimate Energy cost: 100 Ultimate Energy
Key promotion material: 8× Cosmagaric
Last updated: September 20, 2026

Skills

4 levellable

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

Scaling	1	2	3	4	5	6	7	8	9	10	11	12
BATK SEQ 1 Multiplier	38%	42%	46%	50%	54%	57%	61%	65%	69%	74%	79%	86%
BATK SEQ 2 Multiplier	54%	59%	64%	70%	75%	80%	86%	91%	96%	103%	111%	120%
BATK SEQ 3 Multiplier	66%	73%	80%	86%	93%	99%	106%	113%	119%	128%	138%	149%
BATK SEQ 4 Multiplier	82%	90%	98%	106%	114%	122%	131%	139%	147%	157%	169%	184%
Finisher ATK Multiplier	400%	440%	480%	520%	560%	600%	640%	680%	720%	770%	830%	900%
Dive ATK Multiplier	80%	88%	96%	104%	112%	120%	128%	136%	144%	154%	166%	180%

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

Scaling	1	2	3	4	5	6	7	8	9	10	11	12
SP Cost	100	100	100	100	100	100	100	100	100	100	100	100
DMG Multiplier	173%	191%	208%	225%	243%	260%	277%	295%	312%	334%	360%	390%
Stagger	10	10	10	10	10	10	10	10	10	10	10	10
Additional Stagger Dealt When Hit	10	10	10	10	10	10	10	10	10	10	10	10

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

Scaling	1	2	3	4	5	6	7	8	9	10	11	12
Cooldown	19	19	19	19	19	19	19	19	19	19	19	18
DMG Multiplier	102%	112%	122%	133%	143%	153%	163%	173%	184%	196%	212%	230%
Stagger	10	10	10	10	10	10	10	10	10	10	10	10
Base Treatment	300	360	420	480	510	540	570	600	630	645	660	675
Treatment Increase per Will	0.7	0.84	0.98	1.12	1.19	1.26	1.33	1.4	1.47	1.51	1.54	1.58
Ultimate Energy Gain	10	10	10	10	10	10	10	10	10	10	10	10

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

Scaling	1	2	3	4	5	6	7	8	9	10	11	12
Ultimate Energy Cost	100	100	100	100	100	100	100	100	100	100	100	100
DMG Multiplier	289%	318%	347%	376%	404%	433%	462%	491%	520%	556%	599%	650%
Stagger	25	25	25	25	25	25	25	25	25	25	25	25
Shield Conversion Ratio (HP)	18%	18%	18%	20%	20%	20%	22%	22%	22%	25%	25%	25%
Shield Duration (s)	10	10	10	10	10	10	10	10	10	10	10	10

Talents

4 unlocked by Elite rank

Elite 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.
Elite 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.
Elite 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.
Elite 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

Every tier taken

Strength: 60

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

Potentials

5 unlocks

P1
Nomadic Fort
Talent Inflamed for the Assault improved: Protection effect +20%; hitting an enemy extends the duration by 1.5s.
P2
Steel-Hardened Veteran
Strength +20, Will +20
P3
Indomitable Front
Combo skill Frontline Support improved: Restores the HP of another teammate with the lowest percentage HP at 50% of the base effect.
P4
Undying Embers
Ultimate Re-Ignited Oath improved: Ultimate Energy cost -15%.
P5
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

T-Creds, summed from the tables below

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

Level 1 → 90 in 4 steps

Elite 1
Pink Bolete ×3
Protodisk ×8
1,600T-Creds
Elite 2
Red Bolete ×5
Protodisk ×25
6,500T-Creds
Elite 3
Protoset ×24
Ruby Bolete ×5
18,000T-Creds
Elite 4
Cosmagaric ×8
D96 Steel Sample 4 ×20
Protoset ×36
100,000T-Creds

Total to level 90

126,100 T-Creds

Cosmagaric

D96 Steel Sample 4

Pink Bolete

Protoset

Red Bolete

Ruby Bolete

Protodisk

Skill materials

Per skill · 4 levellable

→ 2
Kalkodendra ×1
Protoprism ×6
1,000T-Creds
→ 3
Kalkodendra ×2
Protoprism ×12
2,700T-Creds
→ 4
Chrysodendra ×1
Protoprism ×16
3,200T-Creds
→ 5
Chrysodendra ×1
Protoprism ×21
4,200T-Creds
→ 6
Chrysodendra ×2
Protoprism ×27
5,400T-Creds
→ 7
Protohedron ×6
Vitrodendra ×1
8,200T-Creds
→ 8
Protohedron ×8
Vitrodendra ×1
10,500T-Creds
→ 9
Protohedron ×15
Vitrodendra ×2
18,000T-Creds
→ 10
Blighted Jadeleaf ×3
Mark of Perseverance ×1
Quadrant Fitting Fluid ×6
Protohedron ×15
24,000T-Creds
→ 11
Blighted Jadeleaf ×6
Mark of Perseverance ×2
Quadrant Fitting Fluid ×16
Protohedron ×24
30,000T-Creds
→ 12
Blighted Jadeleaf ×12
Mark of Perseverance ×3
Quadrant Fitting Fluid ×36
Protohedron ×50
65,000T-Creds

One skill at 12

172,200 T-Creds

Blighted Jadeleaf

Mark of Perseverance

Quadrant Fitting Fluid

Chrysodendra

Kalkodendra

Protohedron

Vitrodendra

Protoprism

All 4 skills at 12

688,800 T-Creds

Blighted Jadeleaf

Mark of Perseverance

Quadrant Fitting Fluid

Chrysodendra

Kalkodendra

Protohedron

Vitrodendra

Protoprism

Teammates

Build

Banner & pulls

Ember banner historyHeadhunting windows that featured Ember

Tier list

Ember tier list placementPlaced T1 at Potential 0

Ember FAQ

What attribute is Ember?: Ember is a 6-star Heat operator of the Defender class, from Order of Steel Oath, wielding a Great Sword, released in version 1.0.
What stat does Ember scale on?: Ember's skills multiply ATK. That is read from the scaling rows on the Battle Skill and Ultimate, not from the skill description, so it reflects what the game actually multiplies rather than what the text mentions.
What is the best weapon for Ember?: Thunderberge is the closest fit on the data: it is a 6-star Great Sword with 495 base ATK at level 90, and its skills act on ATK. Industry 0.1 is the best 4-star alternative.
Which gear set should Ember use?: LYNX. Its 3-piece effect is: 3-piece set effect: Wearer's HP Treatment Efficiency +20%. After the wearer gives HP treatment to an allied target, that target also gains 15% DMG Reduction against all types of DMG for 10s. If the said treatment exceeds the target's Max HP, the target gains 30% DMG Reduction against all types of DMG. The aforementioned effects cannot stack. The 3-piece effect is the only set bonus a gear set has, and it needs three matching pieces; an operator equips four in all (Armor, Gloves and two Kits), so the fourth is free for an off-set piece.
How much does it cost to max Ember's skills?: Taking one combat skill from level 1 to 12 costs 172,200 T-Creds and 21× Blighted Jadeleaf among other materials. The Materials tab lists every item per level.
What does Ember P1 do?: Nomadic Fort: Talent Inflamed for the Assault improved: Protection effect +20%; hitting an enemy extends the duration by 1.5s.

Ember

Key facts

Weapons

Gear

Skill priority

Best Potentials

Teams

Skills

Talents

Forged

Inflamed for the Assault

Pay the Ferric Price

Outfitting

Stat talent

Potentials

Nomadic Fort

Steel-Hardened Veteran

Indomitable Front

Undying Embers

The Steel Oath

Full bill

Elite promotion

Skill materials

Related

Teammates

Build

Banner & pulls

Tier list

Ember FAQ