Gallagher Boss Strategy

Master the Gallagher boss fight in Honkai: Star Rail: 2026 Updates with our comprehensive strategy guide. Learn weaknesses, phases, and effective tactics to defeat Gallagher.

Stats / Weaknesses:

• Weakness: Fire, Ice, Quantum
• Resistances: All other elements

Phases:

1. Phase 1: Gallagher utilizes basic attacks and applies a 'Drunk' debuff to allies, reducing their ATK.
2. Phase 2: Gallagher introduces his ultimate, 'The Last Call', which deals significant AoE damage and applies a potent debuff that drains HP over time.
3. Phase 3: Gallagher becomes more aggressive, using his enhanced skills more frequently and summoning additional enemies.

Strategy:

• Prioritize breaking Gallagher's Weakness to interrupt his powerful attacks and debuffs.
• Use characters with strong healing capabilities to counteract the HP drain from 'The Last Call'.
• Time your own ultimates to deal burst damage during his vulnerable phases or to cleanse debuffs.
• Bring characters that can exploit his elemental weaknesses to speed up the fight.
• Be mindful of the 'Drunk' debuff and its ATK reduction; consider using buffs to compensate.