Little Mermaid
Siren
Wind 
SMG 
Supporter 
Burst 1 
Pilgrim Tier 0 Bubble Order
■ 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 total ammo consumed by allies reaches 400. Affects all allies.
Fills Burst Gauge by ▲ 37%.
Bubble Wave
■ Activates when the enemy appears. Affects the target.
Bubble: Damage Taken ▲ 5.05% continuously.
■ Activates after landing 50 normal attacks(s). 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 unit(s).
Deals 63.36% of final ATK as damage. Attacks sequentially for 4 time(s).
■ Activates each time total ammo consumed by allies reaches 500. Affects random enemy unit(s).
Bubble Barrage: Deals 85% of final ATK as damage. Attacks sequentially for 10 time(s).
Siren's Song
■ Affects all allies.
Attack Damage ▲ 10.13% for 10 sec.
Reloads 33.26% magazine(s).
■ Affects self.
ATK ▲ 17.28% of caster's ATK for 10sec.
Skill recommendations
Build
CUBES
Bastion if OL with enough max ammunition lines to shoot forever. Resilience and Wingman are good alternatives.
OL GEAR
Basic DPS build: Elemental DMG, ATK and max ammo capacity. If you get 3 lines of ammo she almost never reloads thanks to Bastion + her burst skill.
Solo Raid Usage
This is based on the top 50 players of all NIKKE servers combined. Data is from enikk.app, check their website for a lot more raid data.
Pros & Cons
- 7.48s CDR plus her extra burst generation makes her provide the best rotations in the game
- Focused fire is a broken mechanic that allows new players and veterans alike to bypass A LOT of boss mechanics, QTEs, annoying projectiles and more
- She's a supporter unit, but it's doing more damage than most burst 3 DPS girls (even without having multiple machine guns in the same team)
- The new standard for what a good burst 1 character is. Can't wait to see how Shift Up powercreeps her kekw
- Siren is bringing a new level of powercreep to the game that most people are ignoring or directly downplaying