A MECH Physical

Shadow Dash

Raiden Mei

TierC
RolesDPS
Release1.8

Shadow Dash is Mei's A-rank MECH-type Physical katana user from v1.8. She dashes in with Speed Fatale, deals 60% more damage from the side or behind, and her Ultimate, Tsukuyomi, summons illusions that keep fighting while she is on standby (2 at SS, 3 at SSS). Her leader skill gives the team up to 21% Crit Rate. She has no Astral Ring and is obsolete in 9.0; her main value today is as the base battlesuit of the Danzai Spectramancer augment core, which needs Shadow Dash at SS for its support kit.

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Shadow Dash

Physical katana DPS

Weapons

Nue of the Shadow BiS
A
Her signature katana and the BBS pick: team +10% Crit Rate and +15% Crit DMG after the active, +25% Crit DMG on Combo ATKs and Ultimates. It is also Danzai Spectramancer's weapon.
Shadow Dash's signature katana: a slash that gives the team +10% Crit Rate and +15% Crit DMG for 9s, plus +25% Crit DMG on Combo ATKs and Ultimates.
Sky Breaker
A
BBS alternative, craftable in the Foundry: impairs enemies (DEF -70%) and paralyzes attackers, which also turns on her S-rank damage bonus.
Foundry katana: its active slashes nearby enemies for 400% ATK of Physical DMG and impairs them (DEF -70% for 6s); Ultimate Evasion or taking a hit calls a paralyzing lightning bolt, and attacks deal 15% more Total DMG to impaired or paralyzed enemies.
Lightning Soul
B
BBS budget placeholder from the Foundry.
Basic katana craftable in the Foundry: every hit deals 43 bonus Lightning DMG, and +15% Lightning DMG.

Stigmata

Dickens T Top
Dickens M Middle
Dickens B Bottom
BBS recommendation: Dickens boosts Basic and Combo ATK Physical DMG, and her Ultimate triggers the set's Total DMG and damage-reduction buffs.
Set effects
2pPen of Critic set. Basic, Combo and Charged ATKs deal 20% more Physical DMG (35% against MECH enemies), and the Ultimate gives them +20% Total DMG for 8s.
3pThe Ultimate reduces Total DMG taken by 30% and improves Ignore Interrupt for 8s; on the Olenyeva twins, the pieces' charges start at 5 and cap at 8.
Marco Polo T Top
Marco Polo M Middle
Marco Polo B Bottom
BBS alternative: bonus Physical DMG and healing once her fast attacks pass 25 combo hits.
Set effects
2pAbove 25 combo hits, Combo and Charged ATKs deal 250% ATK of bonus Physical DMG on hit (CD: 5s).
3pAbove 25 combo hits, the wearer heals 200 HP every 5s.
Ryunosuke Akutagawa T Top
Ryunosuke Akutagawa M Middle
Ryunosuke Akutagawa B Bottom
BBS transitional set: a barrier with +40% Crit DMG and +20% melee Total DMG.
Set effects
2pA barrier worth 15% of max HP when entering battle; +40% Crit DMG while it holds.
3pMelee attacks +20% Total DMG.

Stat targets

  • Reach SS: 2 illusions, +40% Crit DMG on Basic and Combo ATKs, and Danzai Spectramancer's 4★ support kit
  • Attack from the side or behind for the 60% Backstab multiplier
  • Keep HP above 80% for her leader Crit Rate bonus

Talent priority

Ultimate
Special ATK
Passive
Basic ATK
Evasion
Leader

Where to get her: fragments from Expeditions, the Asterite Shop, Dorm Shop, Elysian Shop, Witch's Corridor, Sakura Samsara and the Armada Warehouse (Fandom); Nue of the Shadow comes from Supplies and the Battle Pass Reserve Works (Fandom). If you want to play Danzai Spectramancer, raising Shadow Dash to SS is the real goal.

Teams

Recommended teams

Part 1 Physical QTE chain

Shadow Dash
Snowy Sniper
Divine Prayer

Shadow Dash leads for the team Crit Rate. Her Combo ATK launches enemies for Snowy Sniper's QTE, Divine Prayer's switch attack stuns them for Shadow Dash's QTE, and Snowy Sniper's SS Ultimate makes them take more Physical DMG. Older content only.

Free starter trio

Shadow Dash
White Comet
Valkyrie Chariot

White Comet's Ultimate Evasion gives a Global Time Fracture and SP, her attacks stun enemies for Shadow Dash's and Valkyrie Chariot's QTEs, and Valkyrie Chariot's black hole gathers enemies. From S rank, Shadow Dash deals 30% more damage to stunned and Time-Slowed enemies.

Guide

How to play

Core loop

  • Basic ATK Gokiketsu is a fast 5-hit sequence; the 5th hit is a 250% ATK AoE slash.
  • Hold [ATK] for her Combo ATK, Speed Fatale: she dashes to the target and a Charging Cut (180% ATK) knocks it airborne. Tapping [ATK] right after a Combo ATK or switch attack adds Crescent Spin (4 x 70% ATK AoE).
  • Backstab (passive): +60% Total DMG Multiplier when she attacks from the side or from behind, so keep circling bosses, especially while illusions hold their attention.
  • From S rank, she deals 30% more Physical and Elemental DMG to stunned, paralyzed and Time-Slowed enemies.

Ultimate: Tsukuyomi (75 SP)

  • Summons an Ultimate Illusion with her ATK and Crit Rate, 80% of her HP (with Shadow Mantra) and Physical DMG immunity; it slowly loses HP and explodes when it disappears (300% ATK of Physical DMG and 6 Paralyze Trauma).
  • SS rank: 2 illusions at 50% ATK each. SSS rank: 3 illusions and +25 max SP, but Tsukuyomi costs 10 more SP.
  • The illusions stay on the field when you switch out, so you can cast the Ultimate and swap to a teammate.

Evasion, switch and QTE

  • Untouchable: Ultimate Evasion summons a Body Clone (60% of her ATK for 7s, CD 10s; 2 triggers from S rank). Tap [ATK] after evading to cast Speed Fatale with +70% Crit Rate.
  • Switch entry: an upward slash with 2 extra hits of 250% ATK against airborne enemies.
  • QTE: triggers on stunned enemies, 220% + 4 x 160% ATK of Physical DMG.

Rotation: cast Tsukuyomi, attack from behind with Basic ATK and Speed Fatale + Crescent Spin, and use Ultimate Evasion + [ATK] for a guaranteed high-Crit Speed Fatale.

Strengths

  • Free and easy to farm: fragments from Expeditions, the Asterite Shop and other shops.
  • Leader skill: up to +21% team Crit Rate above 80% HP.
  • Her illusions keep dealing damage and paralyzing enemies while she is on standby.
  • Base battlesuit of Danzai Spectramancer: ranking her up also unlocks that augment core's skills.

Weaknesses

  • Obsolete: a Part 1 A-rank with no Astral Ring.
  • Her best damage bonus needs you to stay behind the target.
  • Needs SS to summon several illusions.
  • Danzai Spectramancer, her augment core, is outdated too.

Notable dupes · Rank

S
Solid upgrade

Leader skill upgrade (+21% Crit Rate), +30% DMG against stunned, paralyzed and Time-Slowed enemies, and one more Ultimate Evasion trigger; also required to raise Danzai Spectramancer's core to 2★ and 3★.

SS
Big upgrade

Two illusions per Ultimate and +40% Crit DMG on Basic and Combo ATKs; required for Danzai Spectramancer's 4★ support kit (and 5★).

SSS
Optional

Three illusions and +25 max SP, but Tsukuyomi costs 10 more SP; also required for Danzai Spectramancer's 6★ core.

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Updated September 26, 2026 · Version 9.0
Sources & references
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