CampaignGeneral Squad: Delta: Ninja Thief · Liter · Privaty · Naga · 2 flex Attackers (Guillotine, Modernia). Skill 1 debuffs all enemies' damage taken on entering Full Burst, and Skill 2 (when she's the only Defender in the squad) grants a Shield plus continuous self-taunt to protect the team.Double-Defender Team: Delta: Ninja Thief · Tia · Privaty · Naga · 1 flex Attacker. With another Defender in the squad, Skill 2 switches to single-target-attack immunity plus self-lifesteal, good for comps needing both a main tank and a secondary one.Arena / PvPSustain Team: Delta: Ninja Thief · Blanc · Centi · Guillotine · 1 flex Supporter. Her Burst buffs squad-wide distributed damage and ATK, while also boosting her next Shield's HP if she's taunting — helping her survive a PvP opening burst.Raid & InterceptionDistributed-Damage Tank Team: Delta: Ninja Thief · Novel · Helm · Naga · 1 flex Attacke

Delta: Ninja Thief — Stats, Skills, Best Teams

Q: Should you pull?

Should you pull?CONSIDER IT — An international community tier list ranks Delta: Ninja Thief B in Story, and a mode-by-mode community tier list only gives her A for Solo Raid — a usable Defender but not yet a mandatory meta core. Worth pulling if you need a flexible Defender who adapts her mechanic to squad composition, or lack an answer for distributed damage in Solo Raid/Anomaly. If you already have a top-tier Burst I Defender like Anis: Star or Crown, prioritize those first since they're more universal.

30-second summary of Delta: Ninja Thief

Delta: Ninja Thief is a Water Nikke in the Defender class, manufactured by Elysion. Stats and skill text below come straight from the game's data.

“To embody the stealthy and silent nature of a Phantom Thief, she decides to become a Ninja Thief.”

Updated: 2026-08-02

Should you pull?

CONSIDER IT — An international community tier list ranks Delta: Ninja Thief B in Story, and a mode-by-mode community tier list only gives her A for Solo Raid — a usable Defender but not yet a mandatory meta core. Worth pulling if you need a flexible Defender who adapts her mechanic to squad composition, or lack an answer for distributed damage in Solo Raid/Anomaly. If you already have a top-tier Burst I Defender like Anis: Star or Crown, prioritize those first since they're more universal.

Review & Analysis

Delta: Ninja Thief is a Water Defender manufactured by Elysion, part of Squad The Scouts. She combines AoE damage with a flexible tanking role: her Burst, Secret Technique: Ninja Overdrive, deals 170% of final ATK as Distributed Damage to all enemies while buffing the whole team's Distributed Damage by 20% and ATK by 15% for 10 seconds. Skill 1 raises damage taken by all enemies by 12% for 15 seconds on entering Full Burst, and self-buffs ATK by 15.04% when using Burst. Skill 2, Ninjutsu Camouflage, changes based on squad composition: without another Defender, Delta creates a 12.25% max HP shield and Taunts all enemies; with another Defender present, she instead dodges single-target attacks and self-heals — flexible between primary and secondary tank roles.

Base Stats

HP711,171

ATK17,059

DEF4,250

Burst II

Skills

Ninjutsu Acid BombSkill 1

Activates when entering Full Burst. Affects all enemies. Ninjutsu Acid Bomb: Damage Taken ▲ 12% for 15 sec. Activates when using Burst Skill. Affects self. ATK ▲ 15.04% for 10 sec. Activates when using Burst Skill. Affects enemies within attack range nearest to the crosshair. Ninjutsu Hyper Acid Bomb: Damage Taken ▲ 8% for 10 sec.

Ninjutsu CamouflageSkill 2

Activates at the start of battle. Effects differ according to squad formation. Activates only the corresponding effect. Affects self if there are no other Defender allies in the squad. Effect 1: Creates a Shield equal to 12.25% of the caster's final Max HP for 10 sec. Effect 2: Taunt all enemies continuously. Affects self if there is another Defender ally in the squad. Effect 1: Ninjutsu Camouflage: Prevents self from being the target of single-target attacks for 10 sec. Loses effect when the caster takes damage. Effect 2: Ninjutsu Injection: Recovers 11.22% of attack damage as HP% continuously. Activates when performing 200 normal attack(s). Affects self while in Attract status. Creates a Shield equal to 12.25% of the caster's final Max HP for 10 sec. Effect 2: Taunt all enemies continuously. Affects self while in Ninjutsu Injection status every 4 sec. Ninjutsu IFAK lasts for 4 sec. Function: Accumulates HP recovery during the activation duration, after which all allies are healed for the accumulated amount. Effect 1: The maximum accumulated amount is equal to 165.28% of the caster's final ATK. Effect 2: Once the duration ends, all allies are healed for the accumulated recovery amount.

Secret Technique: Ninja OverdriveBurst Skill

Affects all allies. Distributed Damage ▲ 20% for 10 sec. ATK ▲ 15% of caster's ATK for 10 sec. Affects all enemies. Deals 170% of final ATK as distributed damage. Affects self while in Attract status. Next shield's HP ▲ 20.13% for 10 sec. Affects self while in Ninjutsu Injection status. Maximum Accumulation of Ninjutsu IFAK ▲ 20.13% for 10 sec.

Skill Investment Priority

Prioritize Burst (AoE Distributed Damage + team buff, her main damage and support source) → Skill 1 (increases damage enemies take + self ATK buff) → Skill 2 (shield/Taunt or dodge/self-heal depending on squad).

Skill investment roadmap (Skill 1 / Skill 2 / Burst — general priority): 1/1/1 (functional) → 4/4/4 → 7/4/7 → 10/7/10 (endgame). Why: Skill 1 (all-enemy debuff) and Burst (distributed-damage buff + support) are her two main squad-wide value sources, so prioritize them together; Skill 2, while defining her tanking mechanic, is less level-sensitive and can stay mid-level.

Strengths & Weaknesses

Strengths

Flexible mechanic depending on squad composition: as the solo Defender she self-Shields and continuously self-taunts; with another Defender present, she switches to single-target-attack immunity plus lifesteal — adapting well to different comps.
Ninjutsu IFAK accumulates healing then releases it all at once to the squad, a hard counter to continuous distributed damage.
Skill 1 debuffs all enemies' damage taken, indirectly buffing the whole squad despite being a Defender.
Her Burst combines a distributed-damage/ATK buff with shield/healing support depending on her state, rare multitasking for a Defender.

Weaknesses

An international community tier list only ranks her B in Story — not yet a top-tier meta Defender for campaign.
Her mechanic changing based on Defender count in the squad is fairly complex, requiring good understanding to build an optimal team.
Community tier lists only give her A for Solo Raid, "-" for Stage/Anomaly, and C for Tribe Tower — a fairly narrow usage window.
As a Burst II unit she comes online slower than popular Burst I Defenders like Crown or Anis: Star.

Overload Priority

Overload priority by weapon type — applies to every Nikke using this weapon.

Sub-stat	Priority	Rolls
ATK		4x
Max Ammo		3-4x
Elemental DMG		2x
Crit Rate		1-2x
Crit DMG		1-2x

Gear →

General Info

Meta Tier

C

Class

Defender

Element

Water

Weapon Type

MG · Ninja Force

Manufacturer

Elysion

Squad

The Scouts

Voice Actors

Lee Seul · Antonia Flynn · Yumiri Hanamori

Release date

16 october, 2025

Recommended Teams

Campaign

General Squad: Delta: Ninja Thief · Liter · Privaty · Naga · 2 flex Attackers (Guillotine, Modernia). Skill 1 debuffs all enemies' damage taken on entering Full Burst, and Skill 2 (when she's the only Defender in the squad) grants a Shield plus continuous self-taunt to protect the team.
Double-Defender Team: Delta: Ninja Thief · Tia · Privaty · Naga · 1 flex Attacker. With another Defender in the squad, Skill 2 switches to single-target-attack immunity plus self-lifesteal, good for comps needing both a main tank and a secondary one.

Arena / PvP

Sustain Team: Delta: Ninja Thief · Blanc · Centi · Guillotine · 1 flex Supporter. Her Burst buffs squad-wide distributed damage and ATK, while also boosting her next Shield's HP if she's taunting — helping her survive a PvP opening burst.

Raid & Interception

Distributed-Damage Tank Team: Delta: Ninja Thief · Novel · Helm · Naga · 1 flex Attacker. Her Ninjutsu IFAK mechanic accumulates healing then releases it to the whole squad at once, excellent against bosses that deal continuous distributed damage in Anomaly Interception.