Gallagher HSR build
Gallagher
Gallagher marks enemies Besotted, advances into a Toughness-heavy Basic and sustains the team through its own attacks.
Fire
Abundance- Role
- Fire Break healer and debuffer
- Version
- 4.4
- Reviewed on
- August 13, 2026
Recommended build
Light Cone
Scent Alone Stays TrueScent Alone Stays True gives Break Effect and applies an Ultimate vulnerability that makes Besotted enemies take more damage.
Quid Pro QuoQuid Pro Quo restores Energy to a low-Energy ally on Gallagher's fast turns, trading personal Break damage for team cycling.
What Is Real?What Is Real? supplies Break Effect and heals Gallagher after Basic Attacks, supporting both his damage and self-sufficiency.
It is available from the Forgotten Hall shop without limited Warps.
Relics
Warrior Goddess of Sun and Thunder improves Gallagher's sustain while converting his healing actions into team tempo.
Two Thief pieces add Break Effect and two Messenger pieces add SPD for a direct Super Break setup.
Planar Ornaments
Forge of the Kalpagni Lantern gives SPD and a large Break Effect burst after Gallagher hits Fire weakness.
When to use it : Use only when the priority enemy has Fire weakness.
Talia: Kingdom of Banditry provides unconditional Break Effect at 145 SPD when Fire weakness cannot activate Kalpagni.
When to use it : Reach 145 SPD.
Team lineup
Firefly and Gallagher shred Fire Toughness, Ruan Mei extends the break window, and Harmony Trailblazer converts every hit into Super Break.
When to use it : Apply Besotted before Firefly's enhanced sequence and use Gallagher's enhanced Basic inside the same break window.
Trace priority
- Talent
- Ultimate
- Basic ATK
- Skill
Gallagher applies Besotted with Ultimate, advances himself into an enhanced Basic and lets allies heal by attacking marked enemies.
How to play it
- 1Basic Attack to generate Skill Points until healing or cleanse is needed.
- 2Cast Ultimate before the team's Break burst to mark enemies Besotted and advance Gallagher.
- 3Use the enhanced Basic immediately to reduce enemy ATK and deal heavy Fire Toughness damage.
Sources and methodology
Editorial recommendations are written from released game data, then cross-checked against specialist calculations. They are not copied from a single tier list.
Review method
The audit separates sustain, Besotted uptime and Fire Toughness damage. Kalpagni is only credited against Fire weakness, and Ultimate action advance is not counted as sheet SPD.
- Prydwen — Gallagher build and calculationsChecked 2026-08-13
- Icy Veins — Gallagher guide and buildsChecked 2026-08-13
- TurnBasedGameData — Version 4.4 exact snapshotChecked 2026-08-13
- TurnBasedGameData — released Version 4.0 to 4.4 deltaChecked 2026-08-13
- HoYoLAB — Version 4.4 update detailsChecked 2026-08-13
E0 Break sustain build. The Kalpagni ornament requires a Fire-weak target; against other weaknesses use Talia instead of pretending the Break bonus is active.