Maiden

An Electric Code Burst 3 Shotgun DPS whose Burst Skill AoE hits twice while in Revenge.
She is rarely a core pick for the main firepower slot in Campaign, bosses, or Raids, and is occasionally used in Arena on the front line to turn on Revenge and then decide the match with one Burst.

Compared with other clip-type Shotguns, her Burst Skill AoE makes up a larger share of her damage. Every 20 hits taken, Revenge raises her ATK, and her Burst Skill hits all enemies once, then hits the same targets once more if Revenge is active. She can apply taunt and Critical Damage together, which makes it easier to rack up hits, but she may take focused fire and fall first on the front line. The basic flow is to hold the buffs from Burst 1 and 2 and go for damage with her Burst Skill right after Full Burst starts.

Leave her on auto by default.
In Arena it is safer to place her on the front line to take hits and turn on Revenge, then end the fight with Full Burst and her Burst Skill before the taunt kicks in.
In Campaign and bosses, taunting raises the risk, so pair her with allies who give survival buffs, or adjust placement so she only takes hits without taunting.

Hit Rate reduces losses from pellets missing at Shotgun range, and reload should match the clip-swap tempo. In Arena, prioritize the Quantum Cube to speed up the Burst Gauge. If Harmony Cube levels differ a lot, use the higher-level cube over the ranking.

To make the most of the Critical Damage buff, fill leftover lines with more Critical Rate and Hit Rate. Match ammo to the clip Shotgun reload tempo.

Words of Assault gives both taunt and Critical Damage, so raise S2 first. Words of Power is the AoE that runs twice during Revenge, so raise the Burst next. Words of Skill is Revenge ATK, so bring S1 up last.

Appears in Arena lineups that put her on the front line to take hits, turn on Revenge, and then decide the fight with her Burst AoE. She does not go into Shotgun Raid squads built around Tove, Blanc, and Noir.

While in Revenge, her Burst Skill AoE hits twice.
As a clip Shotgun, she fills the Burst Gauge relatively fast in Arena.
Her taunt comes with a large Critical Damage boost, so you can bank on a single big Burst.

Once she taunts, she takes focused fire and tends to fall first on the front line.
Without 20 hits taken, Revenge turns on late and her Burst damage drops.
Privaty: Unkind Maid is the better pick for the same Electric Shotgun Burst 3 slot.
She has no place in mainstream Shotgun Raid lineups.

She is the only Elysion SSR Shotgun with a clip-type reload split into three.