Boothill team
Physical · BreakPlays Sustain · BreakA single-target Break carry: one Harmony unit raises Break damage, one implants the Weakness he needs, and the sustain is the one that also breaks.

Penacony
Build guide · Honkai: Star Rail
English voice: Erik Braa
The best Gallagher build in Honkai: Star Rail (Version 4.4) is Scent Alone Stays True with Warrior Goddess of Sun and Thunder. Updated August 28, 2026
Executing Gallagher's rotation faster will yield higher uptime of his Besotted state debuff on enemies fueling his main healing source his talent. Gaining as much Speed as possible is essential but after that Break Effect is Gallagher's only other way to scale his kit because of his bonus ability that converts it into Healing Output%. After gaining max Speed and as much Break Effect% as possible invest into defenses.
#1
Talent
Max first
#2
Skill
Then
#3
Basic
Next
#4
Ultimate
Later
Major traces, best first: Novel Concoction (A2) > Bottoms Up (A6) > Organic Yeast (A4)
When entering the battle, Gallagher regenerates 20 Energy and increases Effect RES by 50%.
When using the Skill, dispels 1 debuff(s) from the designated ally. At the same time, increases their Effect RES by 30% for 2 turn(s).
Extends the duration of the Besotted state inflicted by Gallagher's Ultimate by 1 turn(s).
Increases Gallagher's Break Effect by 20% and Weakness Break Efficiency by 20%.
A single-target Break carry: one Harmony unit raises Break damage, one implants the Weakness he needs, and the sustain is the one that also breaks.
Himeko follows up whenever an enemy is Broken, which turns the standard-warp Erudition unit into a Break team’s damage dealer at no pull cost.
Acheron charges her Ultimate off debuffs other characters apply, so the team runs two more Nihility units and a sustain that never needs a Skill Point.
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.
Feixiao converts ally attacks into her own follow-ups, so the other three slots are a follow-up partner, a Harmony unit that advances her, and a sustain.
Two Erudition units feed each other stacks on wide waves, a Harmony unit multiplies the area damage, and a sustain covers the turns spent charging.
Honkai: Star Rail 4★ Fire Abundance Support
Scent Alone Stays True tops the light cone ranking for Gallagher at S1, ahead of Quid Pro Quo, Post-Op Conversation and What Is Real?. That order is prydwen.gg's, measured in play and rephrased here; every row of it sits under Light cones below.
Run Warrior Goddess of Sun and Thunder on Gallagher, with Messenger Traversing Hackerspace and Iron Cavalry Against the Scourge behind it. The planar ornament is Forge of the Kalpagni Lantern. Main stats are Outgoing Healing body, Speed feet, HP% >= DEF% sphere, Energy Regen Rate rope. Roll substats in the order SPD (as much as possible) > Break Effect % (up to 150%) > Effect RES% > HP% = DEF%.
Trace priority is Talent > Skill > Basic > Ultimate. The Ultimate costs 110 energy, which is what an Energy Regeneration Rate target has to clear.
Gallagher plays Sustain · Break in the Boothill team, alongside Boothill, Ruan Mei and Fugue.
Deals Fire DMG equal to 100% of Gallagher's ATK to one designated enemy target.
Ability level
6 is the cap from trace materials; Eidolons add the rest.
| Attribute | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Basic ATK DMG | 50% | 60% | 70% | 80% | 90% | 100% | 110% | 120% | 130% | 140% |
Deals Fire DMG equal to 250% of Gallagher's ATK to one designated enemy target. Reduces the target's ATK by 15.0%, lasting for 2 turn(s).
Ability level
6 is the cap from trace materials; Eidolons add the rest.
| Attribute | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Basic ATK DMG | 125% | 150% | 175% | 200% | 225% | 250% | 275% | 300% | 325% | 350% |
| ATK Reduction | 10.0% | 11.0% | 12.0% | 13.0% | 14.0% | 15.0% | 16.0% | 17.0% | 18.0% | 19.0% |
Immediately heals a target ally for 1600 HP.
Ability level
10 is the cap from trace materials; Eidolons add the rest.
| Attribute | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Heal | 200 | 340 | 480 | 676 | 830 | 984 | 1138 | 1292 | 1446 | 1600 | 1684 | 1768 | 1852 | 1936 | 2020 |
Inflicts Besotted on all enemies, lasting for 2 turn(s). At the same time, deals Fire DMG equal to 150% of Gallagher's ATK to all enemies, and enhances his next Basic ATK to Nectar Blitz.
Ability level
10 is the cap from trace materials; Eidolons add the rest.
| Attribute | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AoE DMG | 75% | 83% | 90% | 98% | 105% | 113% | 122% | 131% | 141% | 150% | 158% | 165% | 173% | 180% | 188% |
The Besotted state makes targets receive 12.0% more Break DMG. Every time a Besotted target gets attacked by an ally, the attacking ally's HP is restored by 640.
Ability level
10 is the cap from trace materials; Eidolons add the rest.
| Attribute | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Talent DMG | 6.0% | 6.6% | 7.2% | 7.8% | 8.4% | 9.0% | 9.8% | 10.5% | 11.3% | 12.0% | 12.6% | 13.2% | 13.8% | 14.4% | 15.0% |
| Value 2 | 80 | 136 | 192 | 270 | 332 | 394 | 455 | 517 | 578 | 640 | 674 | 707 | 741 | 774 | 808 |
Immediately attacks the enemy. Upon entering battle, inflicts Besotted on all enemies, lasting for 2 turn(s). And deals Fire DMG equal to 50% of Gallagher's ATK to all enemies.
Increases this unit's Outgoing Healing by an amount equal to 50% of Break Effect, up to a maximum Outgoing Healing increase of 75%.
After using the Ultimate, immediately advances action for this unit by 100%.
When Gallagher uses Nectar Blitz to attack Besotted enemies, the HP Restore effect of his Talent will also apply to teammates for this time.
Totals at full unlock, summed across every node of that stat. Ascension rank gates the nodes as it gates the Bonus Abilities above.
Level 80 and every ability maxed
1,812,400
Credits 12 material lines
Ascension to 80
246,400
Credits 4 materials · 6 steps
All 3 abilities maxed
1,566,000
Credits 3× the single-ability bill
Dream Collection Component ×43,200Credits
Dream Collection Component ×86,400Credits
Raging Heart ×2
Dream Flow Valve ×512,800Credits
Raging Heart ×5
Dream Flow Valve ×832,000Credits
Dream Making Engine ×5
Raging Heart ×1564,000Credits
Dream Making Engine ×7
Raging Heart ×28128,000Credits
Total to level 80
246,400 Credits
Dream Making Engine ×12
Raging Heart ×50
Dream Flow Valve ×13
Dream Collection Component ×12
Dream Collection Component ×22,000Credits
Alien Tree Seed ×2
Dream Collection Component ×44,000Credits
Dream Flow Valve ×2
Nourishing Honey ×28,000Credits
Dream Flow Valve ×3
Nourishing Honey ×416,000Credits
Dream Flow Valve ×5
Nourishing Honey ×624,000Credits
Dream Making Engine ×2
Myriad Fruit ×236,000Credits
Dream Making Engine ×3
Myriad Fruit ×4
Past Evils of the Borehole Planet Disaster ×164,000Credits
Myriad Fruit ×6
Past Evils of the Borehole Planet Disaster ×1128,000Credits
Tracks of Destiny ×1
Myriad Fruit ×11
Past Evils of the Borehole Planet Disaster ×1240,000Credits
One ability maxed
522,000 Credits
Tracks of Destiny ×1
Dream Making Engine ×5
Myriad Fruit ×23
Past Evils of the Borehole Planet Disaster ×3
Dream Flow Valve ×10
Nourishing Honey ×12
Alien Tree Seed ×2
Dream Collection Component ×6All 3 abilities maxed
1,566,000 Credits
Tracks of Destiny ×3
Dream Making Engine ×15
Myriad Fruit ×69
Past Evils of the Borehole Planet Disaster ×9
Dream Flow Valve ×30
Nourishing Honey ×36
Alien Tree Seed ×6
Dream Collection Component ×18When entering the battle, Gallagher regenerates 20 Energy and increases Effect RES by 50%.
When using the Skill, dispels 1 debuff(s) from the designated ally. At the same time, increases their Effect RES by 30% for 2 turn(s).
Skill Lv. +2, up to a maximum of Lv. 15. Basic ATK Lv. +1, up to a maximum of Lv. 10.
Extends the duration of the Besotted state inflicted by Gallagher's Ultimate by 1 turn(s).
Ultimate Lv. +2, up to a maximum of Lv. 15. Talent Lv. +2, up to a maximum of Lv. 15.
Increases Gallagher's Break Effect by 20% and Weakness Break Efficiency by 20%.