Honkai: Star Rail – Firefly Leaks (Kit, Eidolons, Abilities)

Firefly is an upcoming 5-star Fire character in Honkai: Star Rail, following the path of Destruction set to release in version 2.3. Her unique kit adds some completely new mechanics to Honkai Star Rail. Check out this post for Firefly’s leaked kit, eidolons, abilities, light cone, materials, team synergies, and more!

Table of Contents

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Firefly’s Character Overview

A member of the Stellaron Hunters and a young girl clad in a mechanical armor “SAM.”

Born as a weapon, she’s afflicted with the agony of Entropy Loss Syndrome due to genetic modification. She joined the Stellaron Hunters in search of the meaning of life, relentlessly pursuing ways to defy fate.

Firefly’s Voice Actors

EN: Analesa Fisher & Adin Rudd
JP: 楠木灯 & 笠间淳 (Tomori Kusunoki & Jun Kasama)
CN: 宋媛媛 & 淦子齐 (Song Yuanyuan & Gan Ziqi)
KR: 유혜지 & 장서화 (Yu Hye-ji & Jang Seo-hwa)

Firefly’s Team Synergies

Bronya
HuoHuo
Harmony Trailblazer
Luocha
Robin
Ruan Mei
Asta
Gallagher

Firefly’s Traces (Kit & Abilities)

Firefly is a 5-Star Fire element character following the path of Destruction, she scales off Attack & Break Effect. She can implant a Fire Weakness, heal herself, remove debuffs from herself, and even fly for a short time in the overworld when using her Technique.

Keep in mind that this is leaked beta information so it could change upon her release.

Active Abilities

Order: Flare Propulsion (Normal Basic Attack): Deals Fire damage equal to 50% (130%) of Firefly’s attack to a single enemy.
Firefly Type-IV: Pyrogenic Decimation (Enhanced Basic Attack): Restores HP by an amount equal to 20% of Firefly’s Max HP, and deals Fire damage equal to 100% (260%) of Firefly’s attack to a single target enemy.
Order: Aerial Bombardment (Normal Skill): Consumes Firefly’s HP equal to 40% of her Max HP and regenerates a set amount of Energy equal to 60% of Firefly’s Max Energy. Deals Fire DMG equal to 100% (250%) of Firefly’s ATK to a single enemy. If Firefly’s current HP is insufficient, her HP is reduced to 1 when using the skill. Causes character’s next action to be advanced by 25%.
Firefly Type-IV: Deathstar Overload (Enhanced Skill): Firefly restores HP by an amount equal to 35% of her maximum HP, and applies Fire Weakness to a single enemy if they don’t already have one, for 2 turns. Deals Fire DMG equal to (0.2 x Break Effect + 100% (250%)) of Firefly’s ATK to a single enemy and (0.1 x Break Effect + 50% (125%)) Firefly’s ATK to adjacent targets for up to 360% Break Effect.
Firefly Type-IV: Complete Combustion (Ultimate): Firefly enters the Complete Combustion state, and Advances Forward her turn by 100%, activating the enhanced versions of her Basic ATK and Skill. While Complete Combustion is active, Firefly’s Speed increases by 30 (75). When using her Enhanced Basic ATK and Enhanced Skill, Firefly’s Weakness Break efficiency is increased by 50% and increases the damage Weakness Broken enemy targets receive by 7.2%, lasting until the current attack ends. A countdown timer for Complete Combustion appears in the Action Order, and when the countdown turn starts, Firefly exits the Complete Combustion state. This countdown has a fixed Speed of 70, and Firefly can’t use her Ultimate again while in the Complete Combustion state.

Technique and Bonus Abilities

Chrysalid Pyronexus (Talent): The less HP Firefly has, the less damage she takes. Firefly’s Damage Reduction reaches its maximum decrease of 20% (50%) when her current HP is less than or equal to 20%. While the Complete Combustion state is active, Firefly’s Damage Reduction remains at its maximum effect, and her Effect RES increases by an additional 10% (40%). If Firefly’s Energy is lower than 50% when the battle starts, she regenerates Energy to 50%, and once Energy is regenerated to its maximum, all debuffs on Firefly are automatically dispelled.
Order: Meteoric Incineration (Technique): Firefly Leaps into the air and moves without restrictions. Lasts for 5 seconds but can be ended prematurely by using her Basic ATK. When the duration ends, SAM descends and immediately attacks all enemies within a set area. In battle, when each wave begins, implants Fire Weakness on all enemies without Fire Weakness, lasting for 2 turns. Thereafter, deals Fire damage equal to 200% of Firefly’s ATK to all enemies.
Module α: Antilag Outburst (Bonus Trace 1): While in the Complete Combustion state, Toughness is also reduced when attacking enemies without Fire Weakness, equal to 55% of the ability’s original Toughness Reduction DMG.
Module β: Autoreactive Armor (Bonus Trace 2): Under the Complete Combustion state, when Firefly’s Break Effect is equal or greater than 200%/360%, attacking a Weakness-Broken enemy target will convert the Toughness Reduction of this attack to 1 instance of 35%/50% Super Break DMG.
Module γ: Core Overload (Bonus Trace 3): For every 100 of Firefly’s ATK that exceeds 1600, increases her Break Effect by 10%.
Stat Traces: Break Effect (37.3%), Effect RES (18%), SPD (5)

Firefly’s Eidolons

In Reddened Chrysalis, I Once Rest (E1): When using Firefly’s Enhanced Skill, she ignores 15% of the target’s defense, and the Enhanced Skill doesn’t consume Skill Points.
From Shattered Sky, I Free Fall (E2): When using Firefly’s Enhanced Basic or Skill in the Complete Combustion state to defeat an enemy target, or cause them to be Weakness Broken, Firefly immediately gains an extra turn. This effect can trigger again after one turn.
Amidst Silenced Stars, I Deep Sleep (E3): Increases the level of Firefly’s Skill by two with a maximum upgrade level of 15, and increases the level of her Basic Attack by one, with a maximum upgrade level of 10.
Upon Lighted Firefly, I Soon Gaze (E4): While in the Complete Combustion state, Firefly’s Effect RES increases by 50%
From Undreamt Night, I Thence Shine (E5): Increases the level of Firefly’s Ultimate and Talent by two, with a maximum upgrade Level of 15.
In Finalized Morrow, I Full Bloom (E6): While in the Complete Combustion state, Firefly’s Fire Resistance Penetration increases by 20%. Additionally, when using her Enhanced Basic and Skill, Firefly’s Weakness Break efficiency is increased by 50%.

Firefly’s Ascension Materials

x15 Tatters of Thought
x15 Fragments of Impression
x15 Shards of Desires
x65 Raging Heart
308,000 Credits

Firefly Ascension Materials needed per level:

Firefly Ascension level	Firefly Ascension materials	Credit cost	Reward
Level 20	x5 Tatters of Thought	4,000	x1 regular Star Rail Pass
Level 30	x10 Tatters of Thought	8,000	None
Level 40	x6 Fragments of Impression, x3 Raging Heart	16,000	x1 regular Star Rail Pass
Level 50	x9 Fragments of Impression, x7 Raging Heart	40,000	None
Level 60	x6 Shards of Desires, x20 Raging Heart	80,000	x1 regular Star Pass
Level 70	x9 Shards of Desires, x35 Raging Heart	160,000	None