Rossi

endgame sub dps

sub_dpsphysicalheatdebuffercrit_support

Rossi earns an SS rating by bridging Arts and Physical damage rather than simply dealing one type. She converts Arts Infliction into Vulnerability, stacks Physical and Heat damage amplification on the target, and still contributes heavy personal damage thanks to crit buffs from her Combo Skill and a high-multiplier Ultimate, so she pays off both as an enabler and as a damage source.

This endgame configuration treats Rossi as a crit-driven damage dealer who also hands the team a debuff package. MI Security supplies crit rate plus a stacking attack buff after each crit, the armor adds Ultimate charge for smoother rotations, and Redeemer Gloves fill the remaining slot. Lupine Scarlet is the natural partner weapon because Rossi's frequent hits stack Fracture fast and because the weapon buffs Heat and Physical damage equally, which suits a kit split between the two. Agility and Intellect remain worthwhile secondary stats. If Lupine Scarlet is unavailable, Glorious Memory keeps the same crit and Agility shape at the cost of a weaker damage passive, while Sundering Steel and Prominent Edge serve as accessible stand-ins with the caveat that their Physical DMG bonus misses her Ultimate.

Insights

Core Mechanics

Crimson Shadow should only be used on a target that already holds Vulnerability, since that condition is what lets the skill lay down Razor Clawmark damage over time.
Razor Clawmark ticks Physical damage and raises how much Physical and Heat damage the marked enemy receives, which is the core of Rossi's team contribution.
Moment of Blazing Shadow unlocks when a target carries both Vulnerability and Arts Infliction, eating the Infliction to hand Rossi a crit rate and crit damage buff; a well-timed second sequence adds another Vulnerability stack.
"Razor Claw" Ambuscade is a multi-hit Heat attack that also plants Heat Infliction, letting Rossi satisfy her own Combo Skill trigger without outside help.
Nicks and Scratches stretches the Clawmark window and deepens the damage amplification, while Seething Blood adds an extra Heat hit plus healing whenever a crit lands on a clawmarked foe.

Scaling

Rossi functions from the start, but her ceiling is gated by how reliably the team feeds Arts Infliction so her Combo Skill keeps firing.
Crit rate snowballs through her kit: crit chance converts into a crit damage window that her Ultimate immediately exploits.
Agility and Intellect both matter, since Intellect also drives the self-healing portion of Seething Blood.
Investment returns climb steeply in hybrid comps, where teammates keep Vulnerability and Infliction refreshed instead of Rossi supplying everything alone.

Team Role

Rossi sits in the sub-DPS slot of hybrid Physical/Arts teams, but many squads end up built around her conditions rather than treating her as a pure filler unit. Her job is to keep a clawmarked target debuffed so the whole team hits harder, while simultaneously producing meaningful damage through her crit window and Ultimate. She wants partners that can apply Arts Infliction on demand, because that is the fuel for her Combo Skill, and she wants them to burst inside her Vulnerability and amplification windows. Positioning-wise she wants to be the controlled operator often enough to place Battle Skill on already-vulnerable targets and to hit the Combo Skill timing input, which is what pushes her to three Vulnerability stacks. The tradeoff is that teams must reserve slots for Infliction application, but the payoff is a large share of total team damage plus faster Crush or Breach triggers.

Weapon

lupine_scarletBest

6★ Sword

glorious_memoryRank 2

6★ Sword

sundering_steelRank 3

5★ Sword

prominent_edgeRank 4

4★ Sword

Weapon Stat Priority

fractureagility_boostcritical_rate_boost

Gear

crit_rate

Pieces

armor

gloves

redeemer gloves

core 1

core 2

Stat Priority

1critical_rate_boost2agility_boost3intellect_boost

Explanation

Lupine Scarlet is the pick because Rossi's multi-hit kit stacks its Fracture effect quickly, and it feeds crit rate, Agility, and both Heat and Physical damage, matching her split damage profile.

The MI Security set compounds the crit plan: it hands out crit rate up front and keeps adding attack after every crit, which Rossi triggers constantly.

Glorious Memory is the realistic substitute when Lupine Scarlet is out of reach; its Agility and crit rate mirrors the top option, but only the Ultimate sees the damage bonus, and its Twilight stacks build slowly at roughly one per half second regardless of how many Vulnerable stacks land.

Sundering Steel and Prominent Edge are budget routes; remember that the Physical DMG they provide does not apply to her Heat-based Ultimate.

Notes

Crit rate is the headline stat here, because the Combo Skill turns crit chance into a crit damage boost that her Ultimate then cashes in.
Redeemer Gloves act as the off-slot piece while the armor and both cores stay on MI Security.
Less value in stacking Physical DMG bonuses, since Rossi's heaviest hit, her Ultimate, is Heat damage instead.
The armor's Ultimate charge helps rotations line up with team burst windows.