CampaignFast Burst-Loop Team: Little Mermaid · Liter · Blanc · Scarlet: Black Shadow · 1 flex Attacker. Skill 1 cuts Burst cooldown every time Full Burst ends, stacking with Liter for an extremely fast burst cycle; Blanc one-shots stages even under heavy CP deficit. Flex Attacker slot: Modernia or Alice.General Squad: Little Mermaid · Privaty · Naga · 2 Attackers (Guillotine, Centi). Skill 2 applies a persistent damage-taken debuff to the target plus AoE damage during Full Burst — clears stages reliably even without a specialized comp.Arena / PvPOne-Shot Team: Little Mermaid · Noir · Centi · Guillotine · 1 flex Supporter. Her Burst refills nearly a third of the magazine and self-buffs ATK, so she supports AND contributes damage right from turn one.Raid & InterceptionCore-Focus Team: Little Mermaid · Privaty · Helm · Naga · 1 flex Attacker. Skill 1's damage-taken debuff plus core-damage b

Little Mermaid — Stats, Skills, Best Teams

Q: Should you pull?

Should you pull?YES — a combined community tier list ranks Little Mermaid SSS Combined and a mode-by-mode community tier list puts her at S for both Solo Raid and Tribe Tower, making her one of the top Burst-I buffer/CDR units right now. Worth pulling immediately if you're running Burst-I squads (Liter, Blanc, Scarlet: Black Shadow) or need a strong CDR for Tribe Tower. If gems are tight and your Liter + Volume core is already solid, you can wait for a rerun since she's not an urgent limited pickup.

30-second summary of Little Mermaid

Little Mermaid is a Wind Nikke in the Supporter class, manufactured by Pilgrim. Stats and skill text below come straight from the game's data.

“One of the 2nd Generation Grimms models. Due to her overly lengthy name, many of those around her call her "Siren" instead. Since she is unable to control the power present in her words, she chooses not to speak. Instead, she expresses her emotions quite clearly using cooing-like sounds.”

Updated: 2026-08-02

Should you pull?

YES — a combined community tier list ranks Little Mermaid SSS Combined and a mode-by-mode community tier list puts her at S for both Solo Raid and Tribe Tower, making her one of the top Burst-I buffer/CDR units right now. Worth pulling immediately if you're running Burst-I squads (Liter, Blanc, Scarlet: Black Shadow) or need a strong CDR for Tribe Tower. If gems are tight and your Liter + Volume core is already solid, you can wait for a rerun since she's not an urgent limited pickup.

Review & Analysis

Little Mermaid is a Wind Code Supporter made by Pilgrim, belonging to the Old Tales squad. Skill 1, Bubble Order, boosts the whole team's attack damage by 4% for 10 seconds on entering Full Burst, cuts Burst cooldown by 7.48 seconds when Full Burst ends, and fills the Burst gauge by 37% every time the team's combined ammo usage reaches 400. Skill 2, Bubble Wave, applies a Bubble debuff to enemies on spawn (+5.05% damage taken), upgrades it to Explosive Bubble after 50 normal attacks (+5.05% more damage taken, 3-second stun), auto-fires 63.36% of ATK 4 times at random enemies every second during Full Burst, and unleashes a Bubble Barrage of 85% ATK x10 hits every time the team consumes 500 total ammo. Her Burst I, Siren's Song, is both a rapid Burst-gauge filler and a source of steady damage, suiting teams that want tight Burst loops.

Base Stats

HP647,453

ATK21,307

DEF3,999

Burst I

Skills

Normal Attack

Deals 10.12% of ATK as damage. Charge Time: 0 s. Charge Damage: 100%. Reload Time: 1 s. Burst Generation: 0.1%. Ammo 120.

Bubble OrderSkill 1

■ Activates only when in Focusing status. Affects all allies. Focuses fire continuously. ■ Activates when Full Burst ends. Affects all allies. Cooldown of Burst Skill ▼ 7.48 sec. ■ Activates when entering Full Burst. Affects all allies. Attack Damage ▲ 4% for 10 sec. ■ Activates each time the total ammo expended by allies reaches 400. Affects all allies. Fills Burst Gauge by 37%.

Bubble WaveSkill 2

■ Activates when the enemy appears. Affects the target. Bubble: Damage Taken ▲ 5.05% continuously. ■ Activates after landing 50 normal attacks. Affects the target if the target is in Bubble status. Explosive Bubble: Damage Taken ▲ 5.05% continuously. Stuns for 3 sec. Removes Bubble. ■ Activates every 1 sec only during Full Burst. Affects random enemy units. Deals 63.36% of final ATK as damage. Attacks sequentially 4 times. ■ Activates each time the total ammo expended by allies reaches 500. Affects random enemy units. Bubble Barrage: Deals 85% of final ATK as damage. Attacks sequentially 10 times.

Siren's SongBurst Skill

Cooldown: 20s. ■ Affects all allies. Attack damage ▲ 10.13% for 10 sec. Reloads 33.26% magazine(s). ■ Affects self. ATK ▲ 17.28% of the skill user's ATK for 10 sec.

Skill Investment Priority

Prioritize Skill 2 (continuous damage plus the Bubble debuff) → Skill 1 (fast Burst-gauge filling, supports the loop) → Burst (combines both, level last for overall optimization).

Skill investment roadmap (Skill 1 / Skill 2 / Burst — general priority logic pending a public detailed % table): 1/1/1 (functional) → 4/4/4 → 7/4/7 → 10/4/10 (endgame). Why: Skill 1 is her core mechanic (CDR + gauge fill) so it comes first; Burst follows since it both reloads and self-buffs ATK; Skill 2 (debuff + AoE) scales more slowly per level, so it's fine to leave at 4 if you need to save books for another character.

Strengths & Weaknesses

Strengths

Skill 1 both cuts Burst cooldown and fills the Burst gauge at ammo-consumption thresholds, making her an engine for Burst-I burst-loop squads.
Skill 2 slaps a persistent damage-taken debuff on enemies plus automatic AoE hits during Full Burst — excellent against fixed-core bosses.
Her Burst refills nearly a third of the squad's magazines and self-buffs ATK, letting her support and deal damage at once.
Her SMG has fast burst generation, a natural fit for her CDR role.

Weaknesses

Her ammo-threshold triggers (400/500 total shots) need the whole squad firing continuously — weak in slow or stalling comps.
Skill 1's core-damage buff is dead weight against enemies without a core or part-priority fights.
Personal damage output is well below a dedicated Attacker; she's fundamentally a support.
As a Burst I unit she competes for a slot against other CDR units like Liter and Volume.

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

SS

Class

Supporter

Element

Wind

Weapon Type

SMG · Spindrift

Manufacturer

Pilgrim

Squad

Old Tales

Voice Actors

Kim Do-hee · Monique Thomas · Yū Shimamura

Illustrator

JAM

Release date

24 april 2025

Recommended Teams

Campaign

Fast Burst-Loop Team: Little Mermaid · Liter · Blanc · Scarlet: Black Shadow · 1 flex Attacker. Skill 1 cuts Burst cooldown every time Full Burst ends, stacking with Liter for an extremely fast burst cycle; Blanc one-shots stages even under heavy CP deficit. Flex Attacker slot: Modernia or Alice.
General Squad: Little Mermaid · Privaty · Naga · 2 Attackers (Guillotine, Centi). Skill 2 applies a persistent damage-taken debuff to the target plus AoE damage during Full Burst — clears stages reliably even without a specialized comp.

Arena / PvP

One-Shot Team: Little Mermaid · Noir · Centi · Guillotine · 1 flex Supporter. Her Burst refills nearly a third of the magazine and self-buffs ATK, so she supports AND contributes damage right from turn one.

Raid & Interception

Core-Focus Team: Little Mermaid · Privaty · Helm · Naga · 1 flex Attacker. Skill 1's damage-taken debuff plus core-damage buff pairs perfectly with bosses that demand sustained core hits; Helm keeps the squad topped up while everyone dumps ammo.

Costumes

Shell PrincessBeautiful BubbleAbyss Flower

Lore & Trivia

“One of the 2nd Generation Grimms models. Due to her overly lengthy name, many of those around her call her "Siren" instead. Since she is unable to control the power present in her words, she chooses not to speak. Instead, she expresses her emotions quite clearly using cooing-like sounds.”