Campaign Crit Buff Team: Mast · Volume · a crit-damage carry (Scarlet) · Helm · 1 flex Attacker. Mast's Skill 2 grants a 23.56% Critical Rate boost to herself and the 2 highest-ATK allies right at the start of the fight, and her Burst adds a 25.19% Critical Damage buff to that same group — the trio becomes a crit-damage lever for your main carry. Arena / PvP Her Critical Rate/Damage buffs land right at the start of combat (on entry and on Burst), letting a one-shot-focused team hit full power on the very first turn — great for PvP that needs a fast finish. Raid & Interception Taunt Support Team for Scarlet: Noise · Liter · Mast · Scarlet · Guillotine. Mast's Burst grants 86.2% Max HP (without healing) plus 25.19% Critical Damage to herself and the 2 highest-ATK allies, helping the carry group survive boss hits while keeping crit damage high.

Mast — Stats, Skills, Best Teams

Q: Should you pull?

Should you pull?PULL — Mast is a rare permanent Critical Rate + Critical Damage enabler that lands right at the start of the fight, well worth investing in if you're building around a crit-damage carry like Scarlet or need a one-shot PvP team. Newer players can hold off if they don't yet have a crit carry to pair her with.

Q: Skill Investment Priority

General guideline: 4/4/4 → 7/4/7 → 10/4/10. Why: Skill 2 (start-of-fight crit buff) and Burst (HP + Critical Damage) are her two core value drivers and should come first; Skill 1 depends on RNG landing consecutive crits, so it can wait.

30-second summary of Mast

Mast is a Electric Nikke in the Supporter class, manufactured by Elysion. Stats and skill text below come straight from the game's data.

“Her soul-crushing tenure at the Naval Squad has slowly made her disillusioned. Even so, she remains vivacious and always brightens everyone's day on the ship.”

Updated: 2026-08-02

Should you pull?

PULL — Mast is a rare permanent Critical Rate + Critical Damage enabler that lands right at the start of the fight, well worth investing in if you're building around a crit-damage carry like Scarlet or need a one-shot PvP team. Newer players can hold off if they don't yet have a crit carry to pair her with.

Review & Analysis

Mast is an SSR Electric Supporter built around a Critical-hit trigger that stacks a DEF-down debuff on enemies. Skill 1, Pirate's Grit, stacks Sea Breeze (target DEF reduction) every time 2 Critical hits land, up to 50 stacks, and also grants continuous Critical Damage to herself and the 2 highest-ATK allies whenever her HP drops below 70%. Burst skill Sail Through the Tempest! shields her trio with bonus Max HP and Critical Damage, while dealing damage to Sea Breeze-afflicted targets that scales with the stacks built — converting her stacking debuff into real damage. Skill 2, Pirate's Sight, grants Critical Rate to the trio right at battle entry. Mast rewards a longer fight where Sea Breeze stacks accumulate before being cashed in through her Burst.

Base Stats

HP647,453

ATK21,307

DEF3,999

Max Ammo120

Reload Time1.5s

Skills

Normal Attack

■ Affects target enemy.
Deals 8.73% of ATK as damage.

Pirate's GritSkill 1

■ Activates when crit attack hits 2 time(s). Affects the target(s).
Sea Breeze: DEF ▼ 1.9% of the caster's DEF, stacks up to 50 time(s) and lasts for 3 sec.
■ Activates when HP falls below 70%. Affects self and 2 ally unit(s) with the highest ATK (except caster).
Critical Damage ▲ 50.94% continuously.

Pirate's SightSkill 2

■ Activates when entering battle. Affects self and 2 ally unit(s) with the highest ATK (except caster).
Critical Rate ▲ 23.56% for 30 sec.

Sail Through the Tempest!Burst Skill

■ Affects self and 2 ally unit(s) with the highest ATK (except caster).
Max HP ▲ 86.2% of the caster's Max HP without restoring HP, lasts for 7 sec.
Critical Damage ▲ 25.19%
■ Affects the target's afflicted with Sea Breeze.
Storm: Deals 4.52% of final ATK as damage. $bcolMirrors the stack count $bfcolof Sea Breeze every 1 sec for 7 sec.

Skill Investment Priority

Prioritize Skill 1 Pirate's Grit (stacks Sea Breeze and grants Crit Damage at low HP, feeding Burst's damage) → Burst Sail Through the Tempest! (converts Sea Breeze stacks into damage plus an HP buffer) → Skill 2 (early Crit Rate).

General guideline: 4/4/4 → 7/4/7 → 10/4/10. Why: Skill 2 (start-of-fight crit buff) and Burst (HP + Critical Damage) are her two core value drivers and should come first; Skill 1 depends on RNG landing consecutive crits, so it can wait.

Strengths & Weaknesses

Strengths

Skill 2 grants a 23.56% Critical Rate boost to herself and the 2 highest-ATK allies right on entering battle — an early, reliable buff with no activation RNG.
Her Burst grants 86.2% Max HP (without healing, avoiding wasted overheal) and 25.19% Critical Damage to the carry group, combining survival and damage in one skill.
Skill 1 stacks Sea Breeze to lower enemy DEF whenever Mast lands 2 consecutive crits, shredding enemy armor harder the longer the fight runs.

Weaknesses

Her crit buffs only target the 2 highest-ATK allies besides herself, not the whole squad, so value depends on which carry gets tagged.
Skill 1 needs 2 consecutive crits to trigger, relying on Mast's own base Critical Rate.
No CDR or healing mechanic, so squads lacking those need an extra buffer.

Overload Priority

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

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

Gear →

General Info

Meta Tier

D

Class

Supporter

Element

Electric

Weapon Type

SMG

Manufacturer

Elysion

Squad

Aegis

Voice Actors

Shin Na-ri · Lisa Reimold · Ryo Hirohashi

Illustrator

DFM

Release date

20 july 2023

Recommended Build

Cubes

Bastion Cube / Resilience Cube

Overload (OL) Priority

Increase ATK › Increase Hit Rate › Increase Element Damage Dealt

Suggested by role & weapon. See: Gear · Cubes

Recommended Teams

Campaign

Crit Buff Team: Mast · Volume · a crit-damage carry (Scarlet) · Helm · 1 flex Attacker. Mast's Skill 2 grants a 23.56% Critical Rate boost to herself and the 2 highest-ATK allies right at the start of the fight, and her Burst adds a 25.19% Critical Damage buff to that same group — the trio becomes a crit-damage lever for your main carry.

Arena / PvP

Her Critical Rate/Damage buffs land right at the start of combat (on entry and on Burst), letting a one-shot-focused team hit full power on the very first turn — great for PvP that needs a fast finish.

Raid & Interception

Taunt Support Team for Scarlet: Noise · Liter · Mast · Scarlet · Guillotine. Mast's Burst grants 86.2% Max HP (without healing) plus 25.19% Critical Damage to herself and the 2 highest-ATK allies, helping the carry group survive boss hits while keeping crit damage high.

Costumes

A Pirate's HeartMast the Diver

Lore & Trivia

“Her soul-crushing tenure at the Naval Squad has slowly made her disillusioned. Even so, she remains vivacious and always brightens everyone's day on the ship.”