Red Hood

An Iron Code Sniper Rifle whose Red WolfB package changes depending on whether she goes in the Burst 1, Burst 2, or Burst 3 slot, letting her aim for top-tier damage or buff contribution.
Charge Speed stacking, conversion of Charge Speed above 100% into Charge Damage, and Pierce specialization build both gauge and damage even outside Burst.
Her Burst 2 package is a taunt, so it can become a burden depending on the fight.

Depending on her assigned Burst stage, the same Burst Skill triggers as the matching package: Beast Cage, End Howling, or Red WolfB. Beast Cage grants all allies Increased ATK based on the caster's ATK and gives her a Burst Skill Cooldown reduction once per battle. End Howling grants her Attention: Taunt all enemies and increased HP Potency, and applies a Cooldown reduction once more per battle. Red WolfB switches her weapon, deals damage proportional to final ATK with a fixed Full Charge damage multiplier, and is briefly followed by expanded pierce range and Increased Charge Speed. Increased Charge Speed stacks with each normal attack, and from the start of battle any Charge Speed above 100% converts into Charge Damage. Pierce specialization lasts from the start of battle. When Beast Cage applies, all allies gain Increased DEF; when End Howling applies, she heals proportional to Attack Damage; and triggering Red WolfB grants her Increased ATK.

Before deploying, check which Burst stage slot Red Hood is in.
When running her as Burst 3, keep firing Full Charges to make full use of her weapon-swap window damage.
Leave her on auto by default and take manual aim only when you need to hit weak points reliably.

Support off-Burst fire and gauge generation with the Resilience Cube for Reload Speed and the Wingman Cube for max ammo. Add more Charge Speed with the Adjutant Cube. If levels differ a lot, use the higher-level Harmony Cube ahead of the ranking.

Prioritize Charge Speed lines to match the structure where the excess turns into Charge Damage. Keep just one Charge Damage line, and adjust ammo and Critical Rate lines to your off-Burst shots and gear.

Red WolfB's per-stage packages and Wild Tooth2's support tie directly into Burst damage, so raise the Burst and Wild Tooth2 first. Glaring Eyes1 is based on Charge Speed stacking and excess conversion, so it can be filled in last.

Used in Campaign, bosses, Tribe Tower, and Solo/Union Raid as a Burst 3 main DPS or a Burst 1 Increased ATK anchor. In Arena she is sometimes slotted into nuke lineups as a Burst 1 Increased ATK anchor.

Just by changing her slot, you can pick the package you need among Beast Cage, End Howling, and Red WolfB.
With expanded pierce range and Charge bonuses, she is good at spreading Pierce damage across enemies with many parts.

End Howling taunts all enemies, so depending on the fight the incoming damage burden grows.
The per-Burst stage Cooldown reduction is limited in uses per battle, so you have to plan the rotation yourself.