Herrscher of the Void (Memorial Arena)
Last updated 2025-10-02
This article is about the Memorial Arena boss. For the battlesuit, see Herrscher of the Void. For the Archive entry, see Herrscher of the Void (Enemy).


Boss Description
Sirin, the Herrscher of the Void, was reawakened using test subject K423 as her physical vessel. Her 16-year slumber only intensified her hatred for humanity. There is hardly any humanity left in Sirin. She is now the complete embodiment of the Honkai itself.
Recommended Features
Herrscher of the Void is one of the possible bosses in Memorial Arena.
Boss Attributes
Skill descriptions are shared across all Memorial Arena brackets. But the exact boss stats are (vastly) different across brackets.
C Rank
- Core Unlocked: At low HP, the Herrscher empowers her skills and activates the Gem of Serenity and Gem of Conquest.
- Gem of Conquest: Has immunity to Lightning DMG (always active). When activated: Attacks additionally deal Lightning DMG.
- Gem of Serenity: After activation, restores 10% Max HP within 1.2s and activates Shield of Serenity that lasts 20s. Fire or Ice DMG can break the Shield. While the Shield is active, the Herrscher takes 65% less Physical DMG and inflicts a Corrosion debuff on any foe who stays near her for more than 2s. Said foe will take DMG equal to 0.6% Max HP per 0.5s. After the Shield dissipates or gets broken, the Herrscher will lose 12.5% Max HP within 2s.
B Rank
- Core Unlocked: At low HP, the Herrscher will empower her skills, activate the Gem of Serenity and Gem of Conquest, and summon Benares.
- Gem of Conquest: Has immunity to Lightning DMG (always active). When activated: Attacks additionally deal Lightning DMG.
- Gem of Serenity: After activation, restores 10% Max HP within 1.2s and activates Shield of Serenity that lasts 20s. Fire or Ice DMG can break the Shield. While the Shield is active, the Herrscher takes 65% less Physical DMG and inflicts a Corrosion debuff on any foe who stays near her for more than 2s. Said foe will take DMG equal to 0.6% Max HP per 0.5s. After the Shield dissipates or gets broken, the Herrscher will lose 12.5% Max HP within 2s.
- Time Tremor: Temporarily activates Herrscher powers, during which any evasion she performs generates a small Time Stop field.
A Rank
- Core Unlocked: At low HP, the Herrscher will empower her skills, activate the Gem of Serenity and Gem of Conquest, and summon Benares.
- Gem of Conquest: Has immunity to Lightning DMG (always active). When activated: Attacks additionally deal Lightning DMG.
- Gem of Serenity: After activation, restores 10% Max HP within 1.2s and activates Shield of Serenity that lasts 20s. Fire or Ice DMG can break the Shield. While the Shield is active, the Herrscher takes 65% less Physical DMG and inflicts a Corrosion debuff on any foe who stays near her for more than 2s. Said foe will take DMG equal to 0.6% Max HP per 0.5s. After the Shield dissipates or gets broken, the Herrscher will lose 12.5% Max HP within 2s.
- Time Tremor: Temporarily activates Herrscher powers, during which any evasion she performs generates a small Time Stop field.
- Void Unleashed: Tears open the space-time fabric to unleash a barrage of raw energy.
S~SS Rank
- Core Unlocked: At low HP, the Herrscher will empower her skills, activate the Gem of Serenity and Gem of Conquest, and summon Benares.
- Gem of Conquest: Has immunity to Lightning DMG (always active). When activated: Attacks additionally deal Lightning DMG and generate a Lightning AOE that Paralyzes targets within for 1s.
- Gem of Serenity: After activation, restores 10% Max HP within 1.2s and activates Shield of Serenity that lasts 30s. Fire or Ice DMG can break the Shield. While the Shield is active, the Herrscher takes 65% less Physical DMG and inflicts a Corrosion debuff on any foe who stays near her for more than 2s. Said foe will take DMG equal to 0.65% Max HP per 0.5s. After the Shield dissipates or gets broken, the Herrscher will lose 12.5% Max HP within 2s.
- Time Tremor: Temporarily activates Herrscher powers, during which any evasion she performs generates a small Time Stop field.
- Void Unleashed: Tears open the space-time fabric to unleash a barrage of raw energy.




