How to build a Firefly in Honkai: Star Rail

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Best Firefly Relics and Planar Ornaments

Firefly Traces overview and priority

From the beginning of the main story of Penacona v Honkai: Star RailFirefly was one of the most prominent and anticipated characters. With the 2.3 update, you can finally play this character once you successfully summon her on a limited time banner, and she brings quite a lot to the table.

Honkai Star Rail Firefly Looking At Beautiful Scenery

Honkai: Star Rail – Ascent and track materials for Firefly

If you're planning to summon a Firefly in Honkai: Star Rail, here are all the materials you'll need to build it.

Firefly is a five-star Destruction character with Fire as her fighting type. While you're summoning the girl you loved from the main story, you'll mostly be playing as her mechanical form in battle known as the Stellaron Hunter, Sam.

Updated on January 2, 2025 by Sanyam Jain: Over time, the Break-based playstyle that Firefly thrives on has seen plenty of updates, including various new support characters. To help you with this playstyle, we've added a bunch of tips on how to play Firefly.

Best Firefly Relics and Planar Ornaments

Once you get a character in Honkai: Star Rail, the first step is this fully upgrade them with Stagnant Shadow materials and then work on their tracks. However, once you're done with all of that, you'll need to focus most of your Trailblaze Power to get the best Relics and Planar Ornaments available in your account.

Since the performance is quite limited, you wouldn't want to waste it upgrading the wrong device. Here they are some of the best equipment you can find in a Firefly build:

Gear type	Name	Synergy with Firefly
Relic	Iron Cavalry Against Scourge	This Relic set was released for the game along with Firefly and is also its best slot. Increases her Break DMG by 16 percent while allowing her to ignore a whopping 25 percent DEF when attacking the enemy. You need to build at least 250 percent Break Effect on her to trigger this effect, but this counts the Break Effect you get from other sources during the battle.
Relic	Archery Meteor Thief	This Relic starter set is your only other option if you can't farm for the Iron Cavalry set yet. That Mrgives you up to 32 percent Break Effect and also regenerates some energy when you break through an enemy's weakness.
Surface decorations	Kalpagni Lantern Forge	Again, the Planar Ornament set released alongside Firefly is her best in the slot for obvious reasons. It also gives her some extra SPD increase her Break Effect by a whopping 40 percent. You just have to attack an enemy with Fire Weakness get Break Effect, which is already a must for Firefly.
Surface decorations	Talia: Kingdom Of Banditry	This set can give you up to 36 percent Break Effect if you have 145 SPDwhich can be obtained quite easily with Firefly. However, she is difficult to farm and gives much less value than her best in the slot.

Firefly Relic Stat Priority

While Firefly may be a DPS main, the stats you'll be looking for are her relics they are quite different from most DPS units. Here's what you need most about her:

Gear type	Top priority for stats	Priority of partial statistics
Head	HP	Break Effect > SPD > ATK Percent
Hands	ATK	Break Effect > SPD > ATK Percent
Body	ATK percentage	Break Effect > SPD
Legs	SPD	Break Effect > ATK Percentage
A flat sphere	ATK percentage	Break Effect > SPD
Connecting rope	Break Effect	SPD > ATK percentage

You don't need to build any Crit like her on Firefly does not cause much personal harm and with maximum upgrades.

Ideally, you need at least 360 percent Break Effect on Firefly because it is the maximum multiplier that is considered with her set. In addition, you would like to have at least 150 SPD without any external SPD enhancement get more rounds during your Ultimate.

Best Firefly light cones

Honkai Star Rail Firefly light cone screen

One of the main steps in trying to build Firefly is getting the right light cone for her. While you have several options for thismost Cones of Light are not quite suitable for her due to the unique kit:

Order	Name	Synergy
1	Where dreams should rest	It's no surprise that Firefly's cone of light works best for her. In addition to a massive 60 percent Break Effect as well increases Break DMG taken by enemies while reducing their SPD.
2	At the Fall of Aeon	With this F2P-friendly Light Cone, you can get an ATK increase of up to 64 percent with max boosts. While this The ATK bonus does not benefit Firefly directlyafter a certain point it will convert to your Break Effect.
3	Moles welcome you	The reason for using this light cone is similar to the above. ATK Percent is one of the important statistics on Firefly as will be converted to Break Effect after you have more than 1800.
4	Distant flames	This is another F2P-friendly cone of light that can be decent for her as it allows her to stay on a relatively higher health when increasing her DMG.

Firefly Traces overview and priority

Before you upgrade anything related to Firefly, it's pretty important to understand what it does because this DPS unit does not work like any other. When you trigger her abilities, you won't see her deal massive damage because most of her damage is locked behind breaking enemies' weaknesses.

Here are the highlights to help you understand her kit:

Firefly can apply a fire weakness to enemies with her technique, which applies it to all enemies in each wave, or an enhanced skill, which only applies it to one enemy each time it is triggered.
Firefly's Ultimate puts her in play enhanced status for a period of time (the timer can be seen on the action bar) and deals extra damage based on her Break Effect during this state.
Hitting Weakness Broken enemies with her enhanced abilities instantly triggers a moment Super Break DMG deals up to 50 percent of her Break DMG for every enemy hit.
During the enhanced state, Firefly can even reduce the resistance of enemies when they don't have the Fire weakness. However, this only reduces 55 percent of the original Toughness value.

As you may have already gathered, most of Firefly's DMG is locked behind breaking enemy weaknesses. With that in mind, you might want to upgrade it Ultimate first because it gives her tons of SPD and Break DMG support. The increase in SPD may be small with each level, but it's more significant than you think.

You can then upgrade her skill and then her talent. Former increases the energy he gains with each normal skill while the other reduces her DMG taken and increases her RES effect. If you use her constantly with a good shield like Aventurine, you can skip her Talent.

It is very important to unlock various bonus abilities for Firefly as soon as possible as some major parts of her kit are locked behind them.

Finally you can too skip upgrades to Firefly's basic attack if you want to save some resources.

Pro tips for playing Firefly

Honkai Star Rail Firefly Be Revealed As Sam

You might be able to easily beat everything with Firefly in the overworld, but you'll have to use a a few tricks if you want to use it effectively in the content of the ending:

It's important to time your Ultimate instead of using it as soon as it's ready. You can usually get your Ultimate after one attack at the start of a battle, but soon you can have a special buff from another character. Wait for this buff and then run Ultimate to get an instant turn.
If there's an enemy whose Weakness is broken and there's still some Toughness next to it, that's it it's better to target the other enemy and make sure the weakness is broken as well in that attack.
In case your Ultimate ends once before all enemies are defeated, it's better to focus on Firefly's normal skill on an enemy that still has a resistance bar because you won't do much damage anyway. If you do this, you can be ready to break their weakness when your Ultimate is ready again.
The difference between Firefly when used on a F2P team and when used on her best team is staggering. It can easily erase all the contents of the terminal, so it is it's worth going after her best supports like Fugue, Ruan Mei and Lingsha whenever you can.