Diesel: Winter Sweets
Fire 
Rocket Launcher 
Attacker 
Burst 3 
Elysion Tier 2 Ah Ah, Mic Test
■ Activates when entering Full Burst for the first time after using own Burst Skill. Affects self.
Intro: Critical damage ▲ 20.28% continuously. This effect cannot be dispelled. Effect persists after revival.
■ Activates when entering Full Burst for the first time without using own Burst Skill. Affects self.
Highlight: Critical damage ▲ 20.28% continuously. This effect cannot be dispelled. Effect persists after revival.
■ Activates when entering Full Burst. Affects self if in Intro status.
Sustained damage ▲ 60.19% for 10 sec.
■ Activates when entering Full Burst. Affects self if in Highlight status.
Sustained damage ▲ 235.03% for 10 sec.
I'm Gonna Sing Now!
■ Activates when an ally or self destroys an enemy's part. Affects all allies (except self).
Mute: Gains immunity to Noise Pollution continuously, stacks up to 3 time(s).
■ Activates when an ally or self destroys an enemy's part. Affects self.
Sustained damage ▲ 68.04% for 15 sec.
■ Activates when attacking with Full Charge. Affects self.
Sustained damage ▲ 318.14% for 3 sec, stacks up to 2 time(s).
■ Activates when entering Full Burst. Affects the stage target.
Deals 63.33% of final ATK as sustained damage every 1 sec for 9 sec.
La La La ♫
■ Affects all enemies.
Damage taken ▲ 25.09% for 10 sec. Deals 18.43% of final ATK as sustained damage every 1 sec for 9 sec.
■ Affects the enemy if the enemy is the stage target.
Deals 181.2% of final ATK as sustained damage every 1 sec for 9 sec.
■ Affects all allies (except self) if self is in Highlight status.
Noise Pollution: Hit rate ▼ 100% for 1 sec.
■ Affects all allies if self is in Highlight status.
Stack count of Mute ▼ 1.
Skill recommendations
Build
CUBES
Really slow girl to reload, Resilience to make sure she can keep up her stacks on skill 2 is a great option.
OL GEAR
AT LEAST 3 ATK LINES. Prio as usual for Ele DMG afterwards. Max ammo and Crit rate to take advantage of skill 1 can be good fillers.
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
- On proper team and gear setups, she is among the strongest fire damage dealers in the game with a fairly simple kit that's auto friendly thanks to skill 2
- Not only can act as DPS, but will also increase everyone's damage thanks to her burst skill damage taken. Not really worth taking the burst past level 7 since it's only a 4% increase on that
- Since she gets so much sustain on her own, she needs to be paired with ATK buffers to fully take advantage of her kit, making team compositions a bit more limited
- If she does not get enough ATK either from her gear or other units in the team, her damage goes down quite hard.
- Why does Shift Up makes fire units with sustain? They are ass to farm Indivilia since she is bugged (or maybe intended) and will cleanse constantly damage from units like Diesel, making her useless on the daily boss
- MAKE SURE YOU USE HER BURST SKILL SECOND, NEVER FIRST. She can only get Intro or Highlight (skill 1) and you always want the second one to get 200% buff instead of 60%.