What Combat Type is Firefly?

Firefly is a 5-star Fire character on the Path of Destruction, from Stellaron Hunters, released in version 2.3.

What stat does Firefly scale on?

Firefly's abilities multiply HP. That is read from the scaling rows on the Skill and Ultimate, not from the ability description, so it reflects what the game actually multiplies rather than what the text mentions.

What is the best Light Cone for Firefly?

The Unreachable Side is the closest fit on the data: it is a 5-star Destruction Light Cone with 582 base ATK at level 80, and its passive acts on HP. Ninja Record: Sound Hunt is the best 4-star alternative.

Which relic set should Firefly use?

Divine-Querying Master Smith. Its 2-piece bonus is: Increases Max HP by 12%. Its 4-piece bonus is: Increases the wearer's CRIT DMG dealt to enemy targets in the DEF reduction state by 28%. After the wearer inflicts the DEF reduction state on an enemy target, all allies gain "Comburent" for 2 turn(s). This effect cannot be stacked. The DMG dealt by ally targets with "Comburent" increases by 15%. This effect can be triggered again after the wearer uses an attack.

Which Planar Ornament should Firefly use?

Fleet of the Ageless. Its 2-piece bonus is: Increases the wearer's Max HP by 12%. When the wearer's SPD reaches 120 or higher, all allies' ATK increases by 8%. Planar Ornaments have no 4-piece bonus; the sphere and the rope are the whole set.

How much does it cost to max Firefly's traces?

Taking one ability from level 1 to 10 costs 652,500 Credits and 2× Tracks of Destiny among other materials. The Materials tab lists every item per level.

What does Firefly E1 do?

In Reddened Chrysalis, I Once Rest: When using the Enhanced Skill, ignores 15% of the target's DEF. The Enhanced Skill does not consume Skill Points.

Firefly — Fire Destruction character | Honkai: Star Rail

All characters

Stellaron Hunters

Firefly

Build guide · Honkai: Star Rail

FireDestructionMain DPS

English voice: Analesa Fisher & Adin Rudd

The best Firefly build in Honkai: Star Rail (Version 4.4) is Whereabouts Should Dreams Rest with Iron Cavalry Against the Scourge. Updated August 28, 2026

Where these rankings come fromThe light cone order, relic sets and stat priorities on this tab are prydwen.gg’s, measured in play and rephrased. Relative damage figures are ratios against the bottom of each ranking, not absolute numbers, and each one holds only for the superimposition and team its row states. Everything else — base stats, passive text, material totals — is read from the game’s own data.

Light cones

4 ranked

Whereabouts Should Dreams Rest — 5★ Destruction Light Cone | Honkai: Star Rail

BISWhereabouts Should Dreams Rest

117.76% at S1

476

Base ATK · lv 80

1164 HP529 DEF

Thus Burns the Dawn — 5★ Destruction Light Cone | Honkai: Star Rail

#2Thus Burns the Dawn

115.57% at S1

688

Base ATK · lv 80

953 HP397 DEF

On the Fall of an Aeon — 5★ Destruction Light Cone | Honkai: Star Rail

#3On the Fall of an Aeon

100% at S5

529

Base ATK · lv 80

1058 HP397 DEF

Indelible Promise — 4★ Destruction Light Cone | Honkai: Star Rail

#4Indelible Promise

98.14% at S5

476

Base ATK · lv 80

953 HP331 DEF

Relics

2 sets

CoreIron Cavalry Against the Scourge

Best and most consistent set for Firefly by a significant margin, granting her BREAK EFFECT% but more importantly DEF SHRED for her Break and Super Breaks. As a break-focused character, stats that boost that damage are rare making DEF SHRED absurdly valuable for her.

2PCIncreases Break Effect by 16%.

4PCIf the wearer's Break Effect is 150% or higher, the Break DMG dealt to the enemy target ignores 10% of their DEF. If the wearer's Break Effect is 250% or higher, the Super Break DMG dealt to the enemy target additionally ignores 15% of their DEF.

Also works

Thief of Shooting Meteor

Planar ornaments

Sphere and rope · 2-piece only

CoreForge of the Kalpagni Lantern

Best Planar set for Firefly, offering her some much-appreciated Speed so she can reach the desired Speed breakpoint easier and tremendous amount of Break Effect on top of that.

2PCIncreases the wearer's SPD by 6%. When the wearer hits an enemy target that has Fire Weakness, the wearer's Break Effect increases by 40%, lasting for 1 turn(s).

Also works

Talia: Kingdom of Banditry

Main stats

Ultimate · 240 energy

Body: ATK%
Feet: Speed
Planar Sphere: ATK%
Link Rope: Break Effect

Substat priority

Highest first

1SPD (Until Breakpoint)Best
2Break Effect%
3ATK%

Stack Speed until you have enough to achieve Firefly's 210 Speed goal (or higher if you're aiming for 0 cycles) while fully buffed in combat, then stack Break Effect wherever possible while picking up any ATK% you can here and there for additional benefits.

Trace priority

Level in this order

#1
Ultimate
Max first
#2
Skill = Talent
Then
#3
Basic
Next

Major traces, best first: Module α: Antilag Outburst (A2) > Module β: Autoreactive Armor (A4) > Module γ: Core Overload (A6)

Best Eidolons

E3 and E5 raise levels only

E1In Reddened Chrysalis, I Once Rest
E2From Shattered Sky, I Free Fall
E3Level bump
E4Upon Lighted Fyrefly, I Soon Gaze
E5Level bump
E6In Finalized Morrow, I Full Bloom

E1
In Reddened Chrysalis, I Once Rest
Game text
When using the Enhanced Skill, ignores 15% of the target's DEF. The Enhanced Skill does not consume Skill Points.
E2
From Shattered Sky, I Free Fall
Game text
While in Complete Combustion, using the Enhanced Basic ATK or the Enhanced Skill to defeat an enemy target or to Break their Weakness allows SAM to immediately gain 1 extra turn. This effect can only trigger 1 time per turn, and the trigger count resets at the start of SAM's turn.
E4
Upon Lighted Fyrefly, I Soon Gaze
Game text
While in Complete Combustion, increases SAM's Effect RES by 50%.
E6
In Finalized Morrow, I Full Bloom
Game text
While in Complete Combustion, increases SAM's Fire RES PEN by 20%. When using the Enhanced Basic ATK or Enhanced Skill, increases Weakness Break Efficiency by 50%.

Teams

1 team

Firefly team

Fire · BreakLeads

A Break Effect carry with two Harmony units that raise Break damage and Weakness Break efficiency, and a sustain that keeps Break uptime rather than adding damage.

Firefly — this characterMain DPS
Ruan MeiBreak amplifier
FugueWeakness implant
LingshaSustain · Break

All teams, with every replacement

Honkai: Star Rail 5★ Fire Destruction Main DPS

Firefly build summary

Updated August 28, 2026

Whereabouts Should Dreams Rest tops the light cone ranking for Firefly, at 117.76% relative damage at S1, ahead of Thus Burns the Dawn, On the Fall of an Aeon and Indelible Promise. That order is prydwen.gg's, measured in play and rephrased here; every row of it sits under Light cones below.

Run Iron Cavalry Against the Scourge on Firefly, with Thief of Shooting Meteor behind it. The planar ornament is Forge of the Kalpagni Lantern. Main stats are ATK% body, Speed feet, ATK% sphere, Break Effect rope. Roll substats in the order SPD (Until Breakpoint) > Break Effect% > ATK%.

Trace priority is Ultimate > Skill = Talent > Basic. The Ultimate costs 240 energy, which is what an Energy Regeneration Rate target has to clear.

The strongest team is Firefly, Ruan Mei, Fugue and Lingsha, built around Firefly — Fire · Break.

Role: Main DPS / Support / Sustain
Best light cone: Whereabouts Should Dreams Rest
Alternatives: Thus Burns the Dawn, On the Fall of an Aeon, Indelible Promise
Relic set: Iron Cavalry Against the Scourge
Planar ornament: Forge of the Kalpagni Lantern
Main stats: ATK% body, Speed feet, ATK% sphere, Break Effect rope
Substat priority: SPD (Until Breakpoint) > Break Effect% > ATK%
Trace priority: Ultimate > Skill = Talent > Basic
Best team: Firefly, Ruan Mei, Fugue, Lingsha
Ultimate energy cost: 240 energy
Key ascension material: 65× Raging Heart
Last updated: August 28, 2026

Abilities

6 levellable

Basic

Order: Flare Propulsion

Single Target
+20 energy
30 Toughness

Deals Fire DMG equal to 100% of SAM's ATK to one designated enemy.

Ability level

6 is the cap from trace materials; Eidolons add the rest.

Basic ATK DMG: 100%

All 10 levels

Attribute	1	2	3	4	5	6	7	8	9	10
Basic ATK DMG	50%	60%	70%	80%	90%	100%	110%	120%	130%	140%

Basic

Fyrefly Type-IV: Pyrogenic Decimation

Single Target
45 Toughness

Restores HP by an amount equal to 20% of this unit's Max HP. Deals Fire DMG equal to 200% of SAM's ATK to one designated enemy.

Ability level

6 is the cap from trace materials; Eidolons add the rest.

Basic ATK DMG: 200%

All 10 levels

Attribute	1	2	3	4	5	6	7	8	9	10
Basic ATK DMG	100%	120%	140%	160%	180%	200%	220%	240%	260%	280%

Skill

Order: Aerial Bombardment

Single Target
60 Toughness

Consumes HP equal to 40% of this unit's Max HP and regenerates a fixed amount of Energy equal to 60% of this unit's Max Energy. Deals Fire DMG equal to 200% of SAM's ATK to one designated enemy. If the current HP is not sufficient, reduces SAM's HP to 1 when using this Skill. Advances this unit's next Action by 25%.

Ability level

10 is the cap from trace materials; Eidolons add the rest.

Energy Regenerated: 60%
Skill DMG: 200%

All 15 levels

Attribute	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Energy Regenerated	50%	51%	52%	53%	54%	55%	56%	57%	59%	60%	61%	62%	63%	64%	65%
Skill DMG	100%	110%	120%	130%	140%	150%	163%	175%	188%	200%	210%	220%	230%	240%	250%

Skill

Fyrefly Type-IV: Deathstar Overload

Blast
90 Toughness

Restores HP by an amount equal to 25% of this unit's Max HP. Adds Fire Weakness to one designated enemy and its adjacent targets, lasting for 2 turns. Deals Fire DMG equal to (0.2 × Break Effect + 200.0%) of SAM's ATK to this target. At the same time, deals Fire DMG equal to (0.1 × Break Effect + 100.0%) of SAM's ATK to adjacent targets. The Break Effect taken into the calculation is capped at 360%.

Ability level

10 is the cap from trace materials; Eidolons add the rest.

Skill DMG: 200.0%
Adjacent DMG: 100.0%

All 15 levels

Attribute	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Skill DMG	100.0%	110.0%	120.0%	130.0%	140.0%	150.0%	162.5%	175.0%	187.5%	200.0%	210.0%	220.0%	230.0%	240.0%	250.0%
Adjacent DMG	50.0%	55.0%	60.0%	65.0%	70.0%	75.0%	81.3%	87.5%	93.8%	100.0%	105.0%	110.0%	115.0%	120.0%	125.0%

Ultimate

Fyrefly Type-IV: Complete Combustion

Enhance
+5 energy

Enters the Complete Combustion state, advances this unit's Action by 100%, and gains Enhanced Basic ATK and Enhanced Skill. While in Complete Combustion, increases SPD by 60, and when using the Enhanced Basic ATK or Enhanced Skill, increases this unit's Weakness Break Efficiency by 50% and increases the Break DMG dealt by SAM to the enemy targets by 20.0%, lasting until this current attack ends. A countdown timer for the Complete Combustion state appears in the Action Order. When the countdown timer's turn starts, SAM exits the Complete Combustion state. The countdown timer has a fixed SPD of 70. SAM cannot use Ultimate while in Complete Combustion.

Ability level

10 is the cap from trace materials; Eidolons add the rest.

SPD Boost: 60
Ultimate DMG: 20.0%

All 15 levels

Attribute	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
SPD Boost	30	33	36	39	42	45	49	53	56	60	63	66	69	72	75
Ultimate DMG	10.0%	11.0%	12.0%	13.0%	14.0%	15.0%	16.3%	17.5%	18.8%	20.0%	21.0%	22.0%	23.0%	24.0%	25.0%

Talent

Chrysalid Pyronexus

Defense

The lower the HP, the less DMG received. When HP is 20% or lower, the DMG Reduction reaches its maximum effect, reducing up to 40%. During the Complete Combustion, the DMG Reduction remains at its maximum effect, and the Effect RES increases by 30%. If Energy is lower than 50% when the battle starts, regenerates Energy to 50%. Once Energy is regenerated to its maximum, dispels all debuffs on this unit.

Ability level

10 is the cap from trace materials; Eidolons add the rest.

Talent DMG: 40%
Effect RES Reduction: 30%

All 15 levels

Attribute	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Talent DMG	20%	22%	24%	26%	28%	30%	33%	35%	38%	40%	42%	44%	46%	48%	50%
Effect RES Reduction	10%	12%	14%	16%	18%	20%	23%	25%	28%	30%	32%	34%	36%	38%	40%

Technique and fixed effects

1 fixed

Technique

Δ Order: Meteoric Incineration

60 Toughness

Leaps into the air and moves about freely for 5 seconds, which can be ended early by launching a plunging attack. When the duration ends, plunges and immediately attacks all enemies within a set area. At the start of each wave, applies a Fire Weakness to all enemies, lasting for 2 turn(s). Then, deals Fire DMG equal to 200% of SAM's ATK to all enemies.

Bonus Abilities

3 unlocked by ascension

A2
Module α: Antilag Outburst
While in the Complete Combustion state, SAM's Break Effect increases by 25%. When using Enhanced Basic ATK or Enhanced Skill to inflict Weakness Break on a target, the Complete Combustion countdown is delayed by 10%. This effect can trigger a maximum of 3 time(s) during each Complete Combustion state.
A4
Module β: Autoreactive Armor
When SAM is in Complete Combustion with a Break Effect that is equal to or greater than 150%/300%, attacking a Weakness-Broken enemy target will convert the Toughness Reduction of this attack into 1 instance of 100%/150% Super Break DMG.
A6
Module γ: Core Overload
For every 10 point(s) of SAM's ATK that exceeds 1800, increases this unit's Break Effect by 0.8%.

Stat traces

Every node taken

Break Effect: 37.3%
Effect RES: 18.0%
SPD: 5

Totals at full unlock, summed across every node of that stat. Ascension rank gates the nodes as it gates the Bonus Abilities above.

Full bill

Credits, summed from the tables below

Level 80 and every ability maxed

2,918,000

Credits 12 material lines

Ascension to 80

308,000

Credits 4 materials · 6 steps

All 4 abilities maxed

2,610,000

Credits 4× the single-ability bill

Ascension

Level 1 → 80 in 6 steps

Lv 30
Tatters of Thought ×5
4,000Credits
Lv 40
Tatters of Thought ×10
8,000Credits
Lv 50
Raging Heart ×3
Fragments of Impression ×6
16,000Credits
Lv 60
Raging Heart ×7
Fragments of Impression ×9
40,000Credits
Lv 70
Raging Heart ×20
Shards of Desires ×6
80,000Credits
Lv 80
Raging Heart ×35
Shards of Desires ×9
160,000Credits

Total to level 80

308,000 Credits

Raging Heart

Shards of Desires

Fragments of Impression

Tatters of Thought

Trace materials

Per ability · 4 levellable

→ 2
Tatters of Thought ×3
2,500Credits
→ 3
Borisin Teeth ×3
Tatters of Thought ×6
5,000Credits
→ 4
Fragments of Impression ×3
Lupitoxin Sawteeth ×3
10,000Credits
→ 5
Fragments of Impression ×4
Lupitoxin Sawteeth ×5
20,000Credits
→ 6
Fragments of Impression ×6
Lupitoxin Sawteeth ×7
30,000Credits
→ 7
Moon Rage Fang ×3
Shards of Desires ×3
45,000Credits
→ 8
Lost Echo of the Shared Wish ×1
Moon Rage Fang ×5
Shards of Desires ×4
80,000Credits
→ 9
Tracks of Destiny ×1
Lost Echo of the Shared Wish ×1
Moon Rage Fang ×8
160,000Credits
→ 10
Tracks of Destiny ×1
Lost Echo of the Shared Wish ×1
Moon Rage Fang ×14
300,000Credits

One ability maxed

652,500 Credits

Tracks of Destiny

Lost Echo of the Shared Wish

Moon Rage Fang

Shards of Desires

Fragments of Impression

Lupitoxin Sawteeth

Borisin Teeth

Tatters of Thought

All 4 abilities maxed

2,610,000 Credits

Tracks of Destiny

Lost Echo of the Shared Wish

Moon Rage Fang

Shards of Desires

Fragments of Impression

Lupitoxin Sawteeth

Borisin Teeth

Tatters of Thought

Firefly’s Eidolons

6 unlocks

E1
In Reddened Chrysalis, I Once Rest
When using the Enhanced Skill, ignores 15% of the target's DEF. The Enhanced Skill does not consume Skill Points.
E2
From Shattered Sky, I Free Fall
While in Complete Combustion, using the Enhanced Basic ATK or the Enhanced Skill to defeat an enemy target or to Break their Weakness allows SAM to immediately gain 1 extra turn. This effect can only trigger 1 time per turn, and the trigger count resets at the start of SAM's turn.
E3
Amidst Silenced Stars, I Deep Sleep
Skill Lv. +2, up to a maximum of Lv. 15. Basic ATK Lv. +1, up to a maximum of Lv. 10.
E4
Upon Lighted Fyrefly, I Soon Gaze
While in Complete Combustion, increases SAM's Effect RES by 50%.
E5
From Undreamt Night, I Thence Shine
Ultimate Lv. +2, up to a maximum of Lv. 15. Talent Lv. +2, up to a maximum of Lv. 15.
E6
In Finalized Morrow, I Full Bloom
While in Complete Combustion, increases SAM's Fire RES PEN by 20%. When using the Enhanced Basic ATK or Enhanced Skill, increases Weakness Break Efficiency by 50%.

Firefly FAQ

What Combat Type is Firefly?: Firefly is a 5-star Fire character on the Path of Destruction, from Stellaron Hunters, released in version 2.3.
What stat does Firefly scale on?: Firefly's abilities multiply HP. That is read from the scaling rows on the Skill and Ultimate, not from the ability description, so it reflects what the game actually multiplies rather than what the text mentions.
What is the best Light Cone for Firefly?: The Unreachable Side is the closest fit on the data: it is a 5-star Destruction Light Cone with 582 base ATK at level 80, and its passive acts on HP. Ninja Record: Sound Hunt is the best 4-star alternative.
Which relic set should Firefly use?: Divine-Querying Master Smith. Its 2-piece bonus is: Increases Max HP by 12%. Its 4-piece bonus is: Increases the wearer's CRIT DMG dealt to enemy targets in the DEF reduction state by 28%. After the wearer inflicts the DEF reduction state on an enemy target, all allies gain "Comburent" for 2 turn(s). This effect cannot be stacked. The DMG dealt by ally targets with "Comburent" increases by 15%. This effect can be triggered again after the wearer uses an attack.
Which Planar Ornament should Firefly use?: Fleet of the Ageless. Its 2-piece bonus is: Increases the wearer's Max HP by 12%. When the wearer's SPD reaches 120 or higher, all allies' ATK increases by 8%. Planar Ornaments have no 4-piece bonus; the sphere and the rope are the whole set.
How much does it cost to max Firefly's traces?: Taking one ability from level 1 to 10 costs 652,500 Credits and 2× Tracks of Destiny among other materials. The Materials tab lists every item per level.
What does Firefly E1 do?: In Reddened Chrysalis, I Once Rest: When using the Enhanced Skill, ignores 15% of the target's DEF. The Enhanced Skill does not consume Skill Points.

Firefly

Light cones

Relics

Planar ornaments

Main stats

Substat priority

Trace priority

Best Eidolons

In Reddened Chrysalis, I Once Rest

From Shattered Sky, I Free Fall

Upon Lighted Fyrefly, I Soon Gaze

In Finalized Morrow, I Full Bloom

Teams

Abilities

Technique and fixed effects

Bonus Abilities

Module α: Antilag Outburst

Module β: Autoreactive Armor

Module γ: Core Overload

Stat traces

Full bill

Ascension

Trace materials

Firefly’s Eidolons

In Reddened Chrysalis, I Once Rest

From Shattered Sky, I Free Fall

Amidst Silenced Stars, I Deep Sleep

Upon Lighted Fyrefly, I Soon Gaze

From Undreamt Night, I Thence Shine

In Finalized Morrow, I Full Bloom

Firefly FAQ