Firefly is a Fire and Destruction character in Honkai: Star Rail. Check out this guide for Firefly's best builds, teams, relics, light cones, and kit in this guide!

Firefly Character Guides
Build Guide	Materials	Warp Banner

Firefly's Character Overview

Firefly Basic Info and Rating

Firefly Basic Information
Firefly	Rarity	5-star
	Element	Fire
	Path	Destruction
General Rating		Endgame Rating
Overall DPS		MoC PF AS

Ratings are based on E0.

How do you rate Firefly?

Character Tier List

Firefly Stats

Is Firefly Worth Pulling?

Firefly is a powerful Destruction DPS who can deal a huge amount of Break DMG in her Complete Combustion state. Firefly's attacks will deplete her own HP, but it can be restored during Complete Combustion.

Even if an enemy isn't weak to Fire, Firefly can still reduce their Toughness and can apply the Fire Weakness through the use of her Ultimate. This allows her to easily Weakness Break an enemy regardless of their Weakness Type.

With absurd Break DMG, self-survival, and the ability to apply Fire Weakness, Firefly is an amazing DPS unit to pull for. She is a great unit, especially for those who want a DPS to fight against any element.

Firefly's Best Builds

Break Effect DPS

The majority of Firefly's DPS will come from Break DMG, so CRIT Rate and CRIT DMG are not important for her. Aside from Break Effect, the ATK stat is also important since this also will increase Firefly's Break Effect.

Recommended Stat Values

Stat	Recommended Value
Break Effect	360% or above (during combat)
ATK	2600 or above
Speed	150 or 164(with Ruan Mei)

Firefly should try and reach for a total of 360% Break Effect in combat to deal the maximum amount of Super Break DMG provided by her Bonus Ability (Module β: Autoreactive Armor). Break Effect support characters and Relic sets can help you achieve that.

At least 2600 ATK is recommended to provide a huge boost of 64% Break Effect to Firefly and make it easier for her to reach the 360% Break Effect requirement.

150 SPD is an ideal goal for Firefly since it provides her with a lot of turns before her Complete Combustion state ends.

You can also try push her Base SPD to 154, which will increase to 164 SPD due to Ruan Mei's buff. This is an important speed breakpoint since it gives you 3 attacks in the first cycle (of MoC or PF) and extra attack during Firefly's Combustion State.

Techincally, the actual Speed Breakpoint of Firefly with Ruan Mei is 164.34, which is achieveable with Ruan Mei's talent at level 10. However, due to decimal points not being shown in-game, people generally recommend 155 Base SPD instead.

Firefly's Best Teams

Firefly F2P Team (Free to Play)

DPS	Support	Support	Healer
Firefly	Trailblazer (Imaginary)	Asta	Lynx

For any team, Firefly needs the Harmony Trailblazer to increase her Super Break DMG. As for other free-to-play units, you can use Asta to increase Firefly's ATK and SPD, while Lynx can keep the party alive via healing.

Firefly Super Break Team

DPS	Support	Support	Sustain
Firefly	Trailblazer (Imaginary)	Ruan Mei	Lingsha

For this team, Firefly and the Harmony Trailblazer will work together in dealing a lot of Super Break DMG to enemies.

Ruan Mei provides more Break Effect and can extend the duration of Weakness Break to give everyone more turns dealing Super Break DMG. For healing, Lingsha is the best choice since she can do AoE healing and increase Break DMG received by enemies.

Firefly's Best Relics and Ornaments

All Recommended Relics and Ornaments

Relics	Rating & Merits
Iron Cavalry Against the Scourge x4	★★★★★ - Best Iron Cavalry Against the Scourge is Firefly's best relic set since it improves Break and Super Break damage by letting it ignore a Target's DEF stat. Firefly can easily reach both Break Effect Requirements with her kit and the best supports.
Thief of Shooting Meteor x4	★★★★☆ - 2nd Best Thief of Shooting Meteor provides a big amount of Break Effect and can restore Firefly's energy when she inflicts Weakness Break on an enemy.
Thief of Shooting Meteor x2 Messenger Traversing Hackerspace x2	★★★☆☆ - 3rd Best Thief of Shooting Meteor and Messenger can be great if you have better Relic sub-stats on those pieces.
Ornaments	Merits
Forge of the Kalpagni Lantern	★★★★★ - Best Forge of the Kalpagni Lantern is Firefly's best ornament since it increases her Speed and Break effect. Firefly will have no problem getting the Break Effect buff since she can apply Fire Weaknesses onto enemies.
Talia: Kingdom of Banditry	★★★★☆ - 2nd Best Talia: Kingdom of Banditry is great for Firefly since it provides Break Effect and she can easily reach the 145 SPD requirement.
Space Sealing Station	★★★☆☆ - 3rd Best Space Sealing Station is great for Firefly if you solely want to boost her own ATK, which will also increase her Break Effect in the process.

Relic List & Guide

Firefly's Best Light Cones

All Recommended Light Cones

Light Cone	Why We Recommend It
Whereabouts Should Dreams Rest	★★★★★ - Best This will be Firefly's best-in-slot Light Cone since it provides a high Break Effect stat and increases the Break DMG taken by the enemy.
On the Fall of an Aeon	★★★★☆ - Great On the Fall of an Aeon provides a lot of stackable ATK buffs, which directly increases Firefly's Break Effect in the process.
Indelible Promise	★★★★☆ - Great Indelible Promise is a Light Cone that provides the Break Effect stat and is Firefly's best 4-star light cone. This Light Cone becomes a lot stronger at high Superimposition levels.

Light Cone List & Guide

Firefly's Trace Priority

Combat Traces

Trace	Priority & Explanation
Basic Attack	★★☆☆☆ - Low Priority While Firefly's Basic ATK should still be upgraded, this should be prioritized last since it only scales on ATK%.
Skill	★★★★☆ - High Priority Firefly's Skill is her second most important Trace since most of her DMG will come from using her Enhanced Skill.
Ultimate	★★★★★ - Highest Priority Firefly's Ultimate is the main showcase of her kit and should be maxed out. Upgrading this increases the SPD buff and Break DMG received by enemies.
Talent	★★★★☆ - High Priority Firefly's Talent increases her survivability via DMG reduction and Effect RES buffs. This should be upgraded to keep Firefly alive for a lot longer.

Bonus Abilities

Trace	Priority & Explanation
Δ Order: Meteoric Incineration	★★★★★ - Highest Priority This allows Firefly to decrease enemy Toughness even if an enemy doesn't have a Fire Weakness. This only works during Complete Combustion.
Module γ: Core Overload	★★★★☆ - High Priority Attacking Weakness Broken enemies during Complete Combustion will deal Super Break DMG if Firefly has enough Break Effect.
Module β: Autoreactive Armor	★★★★★ - Highest Priority Firefly gets more Break Effect for every 10 ATK that exceeds 1800. This significantly increases Firefly's damage output.

Firefly's Gameplay Guide

Skill Uses HP and Restores Energy

Outside her Enhanced State, Firefly's Skill deals damage at the cost of her own HP and restores her Energy.

Talent Increases Survivability

When Firefly has low HP, less damage is sustained when she uses her Skill. When Complete Combustion is activated, Firefly will receive an Effect RES buff.

Ultimate Enhances Basic ATK and Skill

Firefly's Ultimate makes her enter the Complete Combustion and advances her action by 100%. The Complete Combustion state enhances both her Basic ATK and Skill.

This state also buffs her SPD, increases her Break Efficiency, and increases the Break DMG received by enemies from her Enhanced Skill. Firefly will restore HP every time she attacks during Complete Combustion.

Enhanced Skill Applies Fire Weakness

Firefly's Enhanced Skill during Complete Combustion deals damage based on her Break Effect and can apply a Fire weakness onto an enemy. The Enhanced Skill will also deal more Toughness damage.

Complete Combustion Countdown

Firefly's Complete Combustion state has a countdown, and you can see the icon in the turn order. Once the Complete Combustion's turn is up, Firefly's Enhanced state will end.

Technique Applies Fire Weakness

Firefly's Technique allows her to fly into the air and attack all enemies in a set range. After using the Technique to enter combat, Firefly deals Fire DMG to all enemies in each wave.

A Fire weakness can be applied to enemies without it and this will last a set number of turns.

Firefly's Traces (Skills and Kit)

Active Abilities

Basic ATK is maxed out at Level 6.

Technique and Bonus Abilities

Trace	Scaling and Explanation
Technique	Δ Order: Meteoric Incineration: 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. Stat Bonus: 1. Break Effect +5.3%
Bonus Ability	Module γ: Core Overload: For every 10 of SAM's ATK that exceeds 1800, increases SAM's Break Effect by 0.8%. Stat Bonus: 1. SPD +3 2. Effect RES +8.0% 3. Break Effect +10.7%
Bonus Ability	Module β: Autoreactive Armor: When SAM is in Complete Combustion with a Break Effect that is equal to or greater than 200%/360%, attacking a Weakness-Broken enemy target will convert the Toughness Reduction of this attack into 1 instance of 35%/50% Super Break DMG. Stat Bonus: 1. Break Effect +8.0% 2. Effect RES +6.0% 3. Break Effect +8.0%
Bonus Ability	Module α: Antilag Outburst: During the Complete Combustion, attacking enemies that has no Fire Weakness can also reduce their Toughness, with the effect being equivalent to 55% of the original Toughness Reduction from abilites. Stat Bonus: 1. Effect RES +4.0% 2. Break Effect +5.3% 3. SPD +2

Firefly's Eidolons

	Why We Recommend It
E1	★★★★★ - Amazing Firefly's Enhanced Skill ignores DEF and will not consume Skill Ponts. This makes SP-management a lot more manageable.
E2	★★★★★ - Amazing Best stopping point for spenders. Firefly can now get extra turns if she defeats an enemy or inflicts Weakness Break.
E4	★★★☆☆ - Good Firefly gets a huge boost to Effect RES during Complete Combustion, allowing her to easily resist Crowd Control debuffs.
E6	★★★★★ - Amazing Provides a strong upgrade to Firefly's toughness DMG during Complete Combustion, which helps inflict Weakness Break on enemies at a much faster rate.

All Eidolon Resonance Effects

E1	In Reddened Chrysalis, I Once Rest When using the Enhanced Skill, ignores 15% of the target's DEF. And the Enhanced Skill does not consume Skill Points.
E2	From Shattered Sky, I Free Fall When using the Enhanced Basic ATK or the Enhanced Skill in Complete Combustion state to defeat an enemy target or cause them to be Weakness Broken, SAM immediately gains 1 extra turn. This effect can trigger again after 1 turn(s).
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 the Weakness Break efficiency by 50%.

Firefly Ascension and Trace Materials

Total Ascension Materials

Ascension Materials	Total
Tatters of Thought	15
Fragments of Impression	15
Shards of Desires	15
Raging Heart	65
Credit	308,000

Total Trace Materials

All Trace Node Materials	Total
Borisin Teeth	15
Tatters of Thought	41
Lupitoxin Sawteeth	72
Fragments of Impression	56
Moon Rage Fang	139
Shards of Desires	58
Lost Echo of the Shared Wish	12
Tracks of Destiny	11
Credit	3,000,000

Additional Firefly Information

How to Get Firefly

Limited Banners
Firefull Flyshine

As announced in the 2.7 Livestream, Firefly's Banner, Firefull Flyshine, will have a rerun in the second phase of Version 2.7. Firefly's rerun will start on December 25, 2024 (UTC-5).

Firefly Banner Schedule and Rates

Background and Voice Actors

Voice Actor	EN: Analesa Fisher & Adin Rudd JP: Tomori Kusunoki & Jun Kasama
Faction / Affiliation	The Stellaron Hunters

Firefly's In-Game Lore

Faction	Stellaron Hunters
Background	A member of the Stellaron Hunters, clad in a set of mechanized armor known as "SAM." Her character is marked by unwavering loyalty and steely resolve. Engineered as a weapon against the Swarm, she experiences accelerated growth, but a tragically shortened lifespan. She joined the Stellaron Hunters in a quest for a chance at "life," seeking to defy her fated demise.

Honkai: Star Rail Related Guides

▶︎ All Playable Characters

Characters by Rarity

Character Rarity
★★★★	★★★★★

Characters by Path

Character Paths
Destruction	The Hunt	Erudition	Harmony
Nihility	Preservation	Abundance	Remembrance

Characters by Element

Character Elements
Fire	Ice	Lightning	Wind
Quantum	Imaginary	Physical

All Fire Characters

Fire Characters
Trailblazer (Fire)	Hook	Himeko	Asta
Topaz	Guinaifen	Gallagher	Firefly
Jiaoqiu	Lingsha	Fugue