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Boss Guides

Mirror Container

A crystal Rapture that uses glass slippers. Breaking the slippers in one hit and the Electric code interruption are key.

Tyrant classElementWaterWeaknessElectric Code

Where it appears

  • StoryMain story 32-33 (Chapter 32 boss)Also appears in Hard campaign 32-33.
  • InterceptionAnomaly InterceptionOne of the five always-open bosses. Main reward: Manufacturer Gear (arms).
  • Solo RaidSolo Raid Season 16 (July 2024)

Mechanics and counters

  • Replica glass slipper

    Pattern
    In phase 1, one slipper appears, fires a laser at the Nikke with the highest ATK and then explodes. It only breaks from a single hit, and if left alone it keeps firing while invincible.
    Counter
    Break it in one hit with a fully charged SR or a rocket launcher. You can also pause, aim, then resume.

  • Electric code barrier

    Pattern
    Spreads out its slippers and raises a barrier and interruption circles. Only Electric code can break them.
    Counter
    Break the circles with Electric Nikkes. Always bring at least one Electric DPS.

  • Glass slipper defense mode

    Pattern
    In phase 2, four slippers appear, and each one greatly raises the boss's DEF.
    Counter
    Break them when they open up and tremble blue. Each must be broken in one hit to lower its DEF.

  • Harmony Cube interruption

    Pattern
    The boss disappears off-screen and circles appear in sequence. Gray fake circles appear right next to the real ones.
    Counter
    You can break them without Electric, but hitting a gray circle means failure. Aim precisely at the real circles only.

  • Crystal arrow

    Pattern
    A large crystal needle pierces cover and hits the neighboring Nikke too.
    Counter
    It can be shot and destroyed while in flight.

Recommended Nikkes and teams

Recommendations may change as new Nikkes are released. Each team notes when its source was published.

Tribe Tower teams

Each Tribe Tower only allows Nikkes from that manufacturer. The Pilgrim/Overspec tower also allows Overspec Nikkes.

Missilis

The standard Missilis core plus Electric attackers Neon: Vision Eye and Ein.

No boss-specific source was found, so this is a team commonly used in this tower.

Based on 2026-10 sources

Tetra

The standard Tetra core: Anis: Star handles cooldown and Burst gauge, Prika and Mint buff, and Alice deals piercing damage.

No boss-specific source was found, so this is a team commonly used in this tower.

Based on 2026-09 sources

Good to know

  • Bringing one healer or taunt Nikke is safer.

Guide videos

As of 2026-10-26

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