Introduction
If you haven't checked our other guide(s) about Anomaly Interception, make sure to drop a view
Mirror Container in Anomaly Interception is a Water Boss weak to Electric Nikkes. It is farmed for Glove T9M gear. This guide will go over:
Boss HP and Rewards
Best Nikkes and Teams
Bossfight Breakdown and Tips
Gameplay Videos
Boss Rewards
Rewards scale with how much damage you do, with significant improvements at Stages 3 and 6, and decent gain at each of Stage 7, 8, 9. At 200 shards, Manufacturer Arms can be used to guarantee a T9M piece.
Stage | Reward |
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Stage 1 | 0 ~ 120,000,000 Damage |
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Stage 2 | 120,000,001 ~ 200,000,000 Damage |
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Stage 3 | 200,000,001 ~ 600,000,000 Damage |
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Stage 4 | 600,000,001 ~ 1,200,000,000 Damage |
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Stage 5 | 1,200,000,001 ~ 2,300,000,000 Damage
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Stage 6 | 2,300,000,001 ~ 3,500,000,000 Damage |
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Stage 7 | 3,500,000,001 ~ 4,600,000,000 Damage |
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Stage 8 | 4,600,000,001 ~ 5,800,000,000 Damage |
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Stage 9 | 5,800,000,001+ Damage
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Best Nikkes
Mirror Container is a more complex boss when it comes to team building, requiring a Charge unit and a high one-shot damage to break its Glass Slippers. Otherwise, its high DEF will make your team continuously deal less damage.
Against Mirror Container, Electric Nikkes will have their damage boosted a lot if they have Elemental Damage bonuses (from OL & other sources), so investing in Top-Tier Electric DPS is the best option for this fight.
Mirror Container is a very beginner-unfriendly boss fight. Should you need Gloves but don't have any of the teams below, just run 1 Electric unit with your main team.
Anis: Star : The best Burst 1 CDR. She provides buff, burst gen and does damage herself. However, her star summoned during her burst can aim slippers by their own, often leading to slippers qte failure.
Neon: Vision Eye: One of the best Electric DPS.
Cinderella: One of the best Electric DPS.
Crown: The best general Burst 2 Nikke.
Flora (Treasure): Great hyperbuffer Burst 2 Nikke. She provides high ATK buff and true damage buff that counters the Mirror Container perfectly.
Anis: Sparkling Summer: Decent Electric DPS but one of the best Electric buffers. She being a summer limited unit is only obtainable during a certain period of the year. She can also be used as flex.
Maiden: Ice Rose : Decent Electric DPS and great Electric buffer. She being a winter limited unit is only obtainable during a certain period of the year. She is an off-burst unit who uses burst in the final moments of the battle while providing elemental damage buff when she does not burst.
Mast: Romantic Maid : One of the best general flex. Burst Maid Mast every third burst (Crown → Crown → Mast).
Rosanna (Treasure) : Great Electric Burst 1 Nikke, both as DPS and buffer. She does not provide CDR so another Burst 1 CDR is required. Not recommended to use with Anis: Star as her presence heavily nerfs Anis’ damage.
Ada Wong : Great Electric DPS with focused buff on Burst 3 Nikke that uses Burst. She being a collab limited unit is not obtainable anymore (unless rerun). She gets an extremely high charge damage shot during her burst and over-time true damage grenades.
Nayuta : One of the best general Burst 2 Nikke. Use Nayuta if you do not have Crown.
Snow White: Heavy Arms : Great neutral DPS. She can break slippers with her high charge damage shots. She also offers burst gen.
Helm (Treasure) : Decent neutral DPS or flex. When used as neutral DPS, she can break slippers with her high charge damage shots. She also offers burst gen.
Ein: Great Electric DPS. She is the designated Mirror Container killer at her time with her high charge damage shots and true damage feathers.
Moran (Treasure) : Great Burst 1 CDR. She does decent damage output while providing defensive capabilities. If no Anis: Star, use Moran over Rouge unless you only have Cinderella as hypercarry.
Rouge : Decent Burst 1 CDR. While buffed, her charged shot can break Mirror Container’s slippers (only in Interception, as the deficit is too high in Campaign).
Privaty (Treasure): One of the best general flex.
Rapi: Red Hood: Great neutral Burst 1 or Burst 3 DPS. Since she is built universally, she can fill your MC team until you get a proper MC team.
Cinderella: Crystal Wave: Great neutral DPS. Since she is built universally, she can fill your MC team until you get a proper MC team.
Best Teams
Here are some example teams you can try:
Boss Fight Breakdown
Mirror Container is one of the more complex bosses. In short:
The parts in Phases 1 and 2 are called Glass Slippers and only take damage from the first attack that hits them, so bring a Nikke that can do high enough damage in one shot.
Bring an Electric Nikke for QTE (red circles).
In Phase 2, when Glass Slippers are alive, Mirror Container gets a massive DEF boost for each non-destroyed slipper. Ensure that all of them are destroyed when the opportunity strikes for maximum damage.
If you are looking for the full breakdown, Mirror Container’s ATK increases pretty steadily from Stage 4 to Stage 8, whereas its DEF remains the same.
Mirror Container deals increased damage to Fire Nikkes:
300% at Stages 1~3
400% at Stages 4~6
500% at Stages 7~9
Phase I
Mirror Container maintains a permanently exposed core, giving you an easy way to deal more damage by hitting it.
At the start, Mirror Container fires missiles at random. These can be i-framed or destroyed.
After they land, a Glass Slipper spawns and shoots a laser at the highest attack Nikke. The attack can be blocked by a cover or shield and can be taunted. It can be stopped entirely by destroying the Slipper.
To destroy them, since it only takes damage from the first hit, you should cover the entire team while in Full Burst and fire 1 strong shot from a Sniper or Rocket Launcher at it (or use pause tech).
Next, Mirror Container shoots guns targeting the highest final ATK Nikke twice. They can be blocked by cover and taunted.
For the rest of Phase 1, attacks repeat in the following order:
Slipper → 2x Guns → Missiles
Then, it puts up the first QTE (red circles) of the fight. They can only be destroyed by Electric Nikkes, and failing results in a team wipe.
Interim
After successfully destroying the QTE, the Mirror Container vanishes and starts the 2nd QTE (red and grey circles). 4 versions are very similar. Avoid using weapons with AoE or spread to avoid accidentally hitting grey circles.
Failure to destroy red circles in time or destroying a grey circle results in a team wipe.
Patterns
Succeeding the QTE starts Phase 2.
Phase 2
QTE Mirror Container idles for a moment before putting on 4 Shields, each increasing its DEF. The only way to remove it is by destroying all 4 Glass Slippers, removing 1 Shield each time, but they can only be destroyed at a certain time.
Next, the following sequence is repeated 4 times:
Fires lasers at the highest final ATK Nikke. Can be blocked by cover or taunted.
Fires a missile that can be destroyed or taunted but can't be i-framed (the missile seems to be affected by the boss’s DEF stat). The missile splashes on hit, hitting multiple Nikkes.
Then prepares a Glass Slipper to attack. When charged, it will start shooting bullets at random Nikkes. They can be i-framed. Attacks stop once the Glass Slipper is hit.
When charged, the Glass Slipper will be exposed to attacks. This is the only time it can be destroyed. It will only take damage from the first attack that hits it. Therefore, to destroy them, you should cover your entire team, then fire 1 very strong shot using a Sniper or a Rocket Launcher (or use pause tech).
Destroying the Slipper dispels 1 shield.
For a demonstration on how to break Slippers efficiently without sacrificing damage, watch one of the demo videos at the bottom.
After repeating the sequence 4 times, Mirror Container fires lasers, then shoots a missile before putting the 3rd QTE (red circles) of the fight. They can only be destroyed by Electric Nikkes, and failing results in a team wipe.
After the QTE, if all Shields were dispelled, Mirror Container will alternate between lasers and missiles for the rest of the fight. If all Shields are not dispelled, it will repeat the same sequence as before ( Laser → Missile → Charge Slipper) till all Shields are dispelled.
Tips
There is absolutely no need to destroy Phase 1 Glass Slippers other than to time Bursts.
Stalling the first QTE is worth it if it allows you to get another Burst off.
Destroying all 4 Glass Slippers in Phase 2 is a top priority when possible.
For maximum damage when destroying Glass Slippers, make sure all buffs are up during Full Burst, and make sure the entire team is covered as you charge a powerful shot with your Sniper or Rocket Launcher to destroy it (or use pause tech).
There is a method to destroy Glass Slippers without covering the team by pausing:
Turn off the “Sync Cursor to Crosshair” setting.
Burst and Full Charge with a Sniper Nikke (hold the mouse on PC).
Pause the game without firing the charged shot.
Without unpausing, move the crosshair to the location of the Slipper.
Fire the shot while the game is paused (release the mouse on PC).
Unpause.
Reducing the game’s FPS to 30 slows down the boss, which might help you get an extra Burst off.
Gameplay Videos
For visual learners, a pretty fast way to understand what to do is to watch a walkthrough/successful run:
Full credit goes to the original creators.








