What attribute is Rossi?

Rossi is a 6-star Physical operator of the Guard class, from Endfield Industries, wielding a Sword, released in version 1.1.

What stat does Rossi scale on?

Rossi's skills multiply ATK. That is read from the scaling rows on the Battle Skill and Ultimate, not from the skill description, so it reflects what the game actually multiplies rather than what the text mentions.

What is the best weapon for Rossi?

Lupine Scarlet is the closest fit on the data: it is a 6-star Sword with 505 base ATK at level 90, and its skills act on ATK. Prominent Edge is the best 4-star alternative.

How much does it cost to max Rossi's skills?

Taking one combat skill from level 1 to 12 costs 172,200 T-Creds and 21× False Aggela among other materials. The Materials tab lists every item per level.

What does Rossi P1 do?

Origin of Admiration: Battle skill Crimson Shadow and combo skill Moment of Blazing Shadow improved: The DMG Multipliers of these skills are increased to 1.15 times of the original. Wolven Ambrage of the battle skill also returns 10 SP after hitting the enemy.

Rossi, Physical Guard operator | Arknights: Endfield

All operators

Endfield Industries

Rossi

Build guide · Arknights: Endfield

PhysicalGuardSwordMain DPS

English voice: Giada Sabellico

The best Rossi build in Arknights: Endfield (Version 1.5) is Lupine Scarlet with MI Security. Updated September 20, 2026

Key facts

The best Rossi build in Arknights: Endfield (Version 1.5) is Lupine Scarlet with MI Security. 6-star Physical Guard operator.

Rarity: 6★
Attribute: Physical
Class: Guard
Weapon type: Sword
Faction: Endfield Industries
Released: Version 1.1 · 2026-03-29
Best weapon: Lupine Scarlet
Core set: MI Security
Tier list: T0

Where these rankings come fromThe weapon order, gear sets and Potential verdicts on this tab are prydwen.gg’s, measured in play and condensed to a sentence each. Relative damage figures are ratios against the bottom of each ranking, not absolute numbers, and each one holds only for the Potential and team its row states. Everything else (base stats, skill text, material totals) is read from the game’s own data.

Weapons

5 ranked

BISLupine Scarlet

100.00% solo · 100.00% in team at P0

Lupine Scarlet, Rossi's Signature Weapon, is her best option for Agility, Critical Rate and a large DMG% boost, but has downtime and needs Basic Attacks timed carefully to max its stacks before they reset every 20 seconds.

505

Base ATK · lv 90

51 at lv 1

100.00% solo · 100.00% in team at P0

#2Glorious Memory

88.70% solo · 92.50% in team at P5

Glorious Memory, Rossi's weaker Battle Pass Signature, buffs Ultimate DMG per Vulnerable stack up to 3 per rotation but skips Basic Attack and Combo Skill damage, beating listed numbers in one-shot, no-downtime fights.

490

Base ATK · lv 90

50 at lv 1

88.70% solo · 92.50% in team at P5

#3Sundering Steel

68.90% solo · 79.40% in team at P5

Sundering Steel's passive is strong but its lack of Critical Rate can cost key crits given her kit's boosted Critical DMG, though her Battle and Combo Skills both apply Lift to trigger the passive and keep both stacks up easily.

411

Base ATK · lv 90

42 at lv 1

68.90% solo · 79.40% in team at P5

#4Umbral Torch

67.00% solo · 78.10% in team at P5

Umbral Torch, Laevatain's Battle Pass weapon, works on Rossi via its 6-star stat line without her Primary Attribute, with high ATK and a Heat DMG passive boosting Ultimate with steady Combustion or Corrosion, rating better in Ardelia teams.

490

Base ATK · lv 90

50 at lv 1

67.00% solo · 78.10% in team at P5

#5Rapid Ascent

64.00% solo · 76.10% in team at P0

Rapid Ascent, a 6-star with Critical Rate, boosts Battle Skill's Physical DMG, but since Ultimate isn't Physical only its DMG vs Staggered buff helps, dropping off unless she ults Staggered foes, beating listed numbers in short fights.

495

Base ATK · lv 90

50 at lv 1

64.00% solo · 76.10% in team at P0

Gear

1 sets

CoreMI Security

MI Security is a go-to for crit-scaling Operators, stacking Critical Rate on its pieces and adding 25% ATK plus 10% Critical Rate on consistent crits, suiting Rossi's Critical DMG kit, Talent extra hits, and preferred Agility and Intellect.

3PC3-piece set effect: Wearer's Critical Rate +5%. After the wearer scores a critical hit, the wearer gains ATK +5% for 5s. This effect can reach 5 stacks. At max stacks, grant an additional Critical Rate +5%. This effect cannot stack.

Best pieces · four slots

Armor
Bonekrusha Heavy Armor
116.80%· higher in the right team
Armor
Frontiers Armor T2
118.30%
Armor
Frontiers Armor T3
118.80%
Armor
MI Security Armor T1
116.80%· higher in the right team
Armor
Type 50 Yinglung Heavy Armor T2
118.60%
Gloves
Eternal Xiranite Gloves
103.80%· higher in the right team
Gloves
Frontiers Blight RES Gloves
114.60%
Gloves
MI Security Gloves T1
122.80%
Gloves
MI Security Hands PPE
114.20%
Gloves
MI Security Hands PPE T1
112.60%
Gloves
Redeemer Gloves
123.80%
Gloves
Type 50 Yinglung Gloves
115.20%
Kit
Frontiers Extra O2 Tube
109.00%
Kit
MI Security Push Knife
109.40%
Kit
MI Security Scope T1
117.10%
Kit
Redeemer Seal
102.40%· higher in the right team
Kit
Redeemer Tag T1
109.40%
Kit
Type 50 Yinglung Radar T1
115.50%
Kit
Type 50 Yinglung Radar T2
108.90%

Skill priority

Main Field

#1
ULTIMATE
Max first
#2
COMBO SKILL
Then
#3
BASIC ATTACK
Next
#4
BATTLE SKILL
Later

Best Potentials

3 worth pulling

P1Origin of Admiration
P2Gap to Perfectionworth pulling
P3Tangible Duties
P4Innocent Wishworth pulling
P5Legendary Destinationworth pulling

P2
P2Top pick
Gap to Perfection
- 109.8% solo
- 106.5% in team
This Potential gives generic stat boosts, and its Critical Rate bonus is especially valuable given Rossi's Critical DMG buffs and her Seething Blood Talent.
In game
Agility +20, Critical Rate +7%.
P4
P4
Innocent Wish
- 115.4% solo
- 110.2% in team
Given Rossi's steep Ultimate energy cost, a 15% reduction to 93.5 is a real help, adding no direct damage itself but unlocking builds and rotations around a more accessible Ultimate, likely worth more than the percentage alone suggests.
In game
Ultimate "Razorclaw" Ambuscade improved: Ultimate Energy cost -15%.
P5
P5
Legendary Destination
- 125% solo
- 116.6% in team
A higher Ultimate multiplier plus an extra Critical DMG bonus suits Rossi especially well, adding pure damage with no gameplay changes but still ranking among her best direct gains since so much of her damage comes from Ultimate.
In game
Ultimate "Razorclaw" Ambuscade improved: DMG Multiplier is increased to 1.1 times of the original; Critical DMG Dealt is increased by +30%.

Every Potential Rossi has, in full, is on the Kit tab. This is only which of them are worth the pulls.

Teams

1 team

Rossi team

Arts · Ultimate burstLeads

Rossi’s Ultimate alone kills most enemies, so this build stacks Arts Reactions ahead of it rather than leaning on her Physical side. Perlica’s Electric and Tangtang’s Cryo both feed the burst, and the fourth slot is whichever buffer gets the most out of the one cast that matters.

Rossi, this operatorMain DPS · Lift and crit
PerlicaElectric infliction to stack
TangtangCryo infliction to stack
GilbertaSupporter · Nature infliction and grouping

All teams, with every replacement

Arknights: Endfield 6★ Physical Guard Main DPS

Rossi build summary

Updated September 20, 2026

Lupine Scarlet tops the weapon ranking for Rossi, at 100.00% relative damage at P0 in the solo column, ahead of Glorious Memory, Sundering Steel and Umbral Torch. That order is prydwen.gg's, measured in play and condensed to a sentence each; every row of it sits under Weapons below.

Run MI Security on Rossi.

Skill priority is ULTIMATE > COMBO SKILL > BASIC ATTACK >= BATTLE SKILL. The Ultimate costs 110 Ultimate Energy, which is what an Ultimate Gain Efficiency target has to clear.

The strongest team is Rossi, Perlica, Tangtang and Gilberta, built around Rossi: Arts · Ultimate burst.

Role: Main DPS / Support / Sustain
Best weapon: Lupine Scarlet
Alternatives: Glorious Memory, Sundering Steel, Umbral Torch
Gear set: MI Security
Skill priority: ULTIMATE > COMBO SKILL > BASIC ATTACK >= BATTLE SKILL
Best team: Rossi, Perlica, Tangtang, Gilberta
Ultimate Energy cost: 110 Ultimate Energy
Key promotion material: 8× Cosmagaric
Last updated: September 20, 2026

Skills

4 levellable

Basic

Seething Wolfblood

BASIC ATTACK: An attack with up to 5 sequences that deals Physical DMG. As the controlled operator, Final Strike also deals 18 Stagger. DIVE ATTACK: Basic attack performed in mid-air becomes a dive attack that deals Physical DMG to nearby enemies. FINISHER: Basic attack performed near a Staggered enemy becomes a finisher attack that deals massive Physical DMG and recovers some SP.

Skill level

BATK SEQ 1 Multiplier: 61%
BATK SEQ 2 Multiplier: 71%
BATK SEQ 3 Multiplier: 77%
BATK SEQ 4 Multiplier: 91%
BATK SEQ 5 Multiplier: 113%
Finisher ATK Multiplier: 900%
Dive ATK Multiplier: 180%

All 12 levels

Scaling	1	2	3	4	5	6	7	8	9	10	11	12
BATK SEQ 1 Multiplier	27%	30%	32%	35%	38%	41%	43%	46%	49%	52%	56%	61%
BATK SEQ 2 Multiplier	32%	35%	38%	41%	44%	47%	50%	54%	57%	61%	65%	71%
BATK SEQ 3 Multiplier	34%	37%	41%	44%	48%	51%	54%	58%	61%	65%	71%	77%
BATK SEQ 4 Multiplier	41%	45%	49%	53%	57%	61%	65%	69%	73%	78%	84%	91%
BATK SEQ 5 Multiplier	50%	55%	60%	65%	70%	75%	80%	85%	90%	96%	104%	113%
Finisher ATK Multiplier	400%	440%	480%	520%	560%	600%	640%	680%	720%	770%	830%	900%
Dive ATK Multiplier	80%	88%	96%	104%	112%	120%	128%	136%	144%	154%	166%	180%

Skill

Crimson Shadow

Rossi gains up to an additional 10 Ultimate Energy if the second sequence hits an enemy.
100 SP

Charges to the target to deal Physical DMG and apply Lift. If the target already has Vulnerability stack(s), the skill also unleashes a Wolven Ambrage that charges at the target to deal Heat DMG.

Skill level

SP Cost: 100
SEQ 1 DMG Multiplier: 192%
SEQ 1 Stagger: 5
SEQ 2 DMG Multiplier: 288%
SEQ 2 Stagger: 15

All 12 levels

Scaling	1	2	3	4	5	6	7	8	9	10	11	12
SP Cost	100	100	100	100	100	100	100	100	100	100	100	100
SEQ 1 DMG Multiplier	85%	94%	102%	111%	119%	128%	137%	145%	154%	164%	177%	192%
SEQ 1 Stagger	5	5	5	5	5	5	5	5	5	5	5	5
SEQ 2 DMG Multiplier	128%	141%	153%	166%	179%	192%	204%	217%	230%	246%	265%	288%
SEQ 2 Stagger	10	10	10	10	10	10	10	10	12	12	12	15

Combo

Moment of Blazing Shadow

Rossi immediately gains the Critical Rate and Critical DMG buffs after casting the second combo sequence, without consuming any Arts Inflictions. Also, the second sequence will only apply 1 more stack of Vulnerability if it consumes any Arts Inflictions and is cast with perfect timing. Merely casting it with perfect timing is not enough.
15s cooldown

Rossi's combo skill has 2 consecutive sequences. COMBO SEQUENCE 1 deals Physical DMG to the target. COMBO SEQUENCE 2 consumes all Arts Infliction stacks from the target, deals Physical DMG based on the number of Arts Infliction stacks consumed, applies 1 instance of Lift, and buffs Rossi's Critical Rate and Critical DMG Dealt at the same time. If COMBO SEQUENCE 2 is cast with perfect timing, it applies 1 more stack of Vulnerability. Trigger: When an enemy has both Vulnerability and Arts Infliction stacks.

Skill level

Cooldown: 0
SEQ 1 DMG Multiplier: 150%
SEQ 1 Ultimate Energy Gain: 10
SEQ 2 DMG Multiplier: 300%
Bonus DMG Multiplier per Infliction Stack: 180%
SEQ 2 Stagger: 5
Critical Rate: 25%
Critical DMG Boost: 50%
Buff Duration (s): 15
SEQ 2 Ultimate Energy Gain: 10

All 24 levels

Scaling	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24
Cooldown	15	15	15	15	15	15	15	15	15	15	15	14	0	0	0	0	0	0	0	0	0	0	0	0
SEQ 1 DMG Multiplier	67%	73%	80%	87%	93%	100%	107%	113%	120%	128%	138%	150%
SEQ 1 Ultimate Energy Gain	10	10	10	10	10	10	10	10	10	10	10	10
SEQ 2 DMG Multiplier	133%	147%	160%	173%	187%	200%	213%	227%	240%	257%	277%	300%
Bonus DMG Multiplier per Infliction Stack	80%	88%	96%	104%	112%	120%	128%	136%	144%	154%	166%	180%
SEQ 2 Stagger	5	5	5	5	5	5	5	5	5	5	5	5
Critical Rate	15%	15%	15%	17%	17%	17%	19%	19%	21%	21%	23%	25%
Critical DMG Boost	30%	30%	30%	34%	34%	34%	38%	38%	42%	42%	46%	50%
Buff Duration (s)	15	15	15	15	15	15	15	15	15	15	15	15
SEQ 2 Ultimate Energy Gain	10	10	10	10	10	10	10	10	10	10	10	10

Ultimate

"Razorclaw" Ambuscade

110 Ultimate Energy

Rossi flutters her cape and unleashes a flurry of stabs that quickly deals multiple sequences of Heat DMG to the target. She then performs a two-sequence slash attack with her dagger that deals massive Heat DMG and applies Heat Infliction. When this skill successfully scores a critical hit, it deals higher Critical DMG.

Skill level

Ultimate Energy Cost: 110
Stab Attack Total DMG Multiplier: 600%
SEQ 1 Slash DMG Multiplier: 250%
SEQ 2 Slash DMG Multiplier: 750%
Stagger: 25
Critical DMG Boost: 60%

All 12 levels

Scaling	1	2	3	4	5	6	7	8	9	10	11	12
Ultimate Energy Cost	110	110	110	110	110	110	110	110	110	110	110	110
Stab Attack Total DMG Multiplier	275%	300%	325%	350%	375%	400%	425%	450%	475%	525%	550%	600%
SEQ 1 Slash DMG Multiplier	111%	122%	133%	144%	156%	167%	178%	189%	200%	214%	231%	250%
SEQ 2 Slash DMG Multiplier	333%	367%	400%	433%	467%	500%	534%	567%	600%	642%	692%	750%
Stagger	25	25	25	25	25	25	25	25	25	25	25	25
Critical DMG Boost	60%	60%	60%	60%	60%	60%	60%	60%	60%	60%	60%	60%

Talents

4 unlocked by Elite rank

Elite 1
Skirmisher
1. Elite 1
  Operator Agility +10.
2. Elite 2
  Operator Agility +15.
3. Elite 3
  Operator Agility +15.
4. Elite 4
  Operator Agility +20.
Elite 1
Nicks and Scratches
1. Elite 1
  Battle skill improved: After Wolven Ambrage deals DMG, Rossi applies Razor Clawmark to the target for 15s. This effect cannot stack. For the duration of Razor Clawmark, the target takes 25% ATK (Rossi's) of Physical DMG per second and suffers Physical DMG Taken and Heat DMG Taken +6%.
2. Elite 2
  Battle skill improved: After Wolven Ambrage deals DMG, Rossi applies Razor Clawmark to the target for 25s. This effect cannot stack. For the duration of Razor Clawmark, the target takes 30% ATK (Rossi's) of Physical DMG per second and suffers Physical DMG Taken and Heat DMG Taken +12%.
Elite 2
Seething Blood
1. Elite 2
  When Rossi's skill deals Critical DMG to a Razor Clawmarked enemy, trigger another hit that deals 12% ATK (Rossi's) of Heat DMG and restores [Intellect × 0.04] HP to Rossi. If the target is also Combusted, then the aforementioned DMG and HP Restoration effects are increased to 1.5 times.
2. Elite 3
  When Rossi's skill deals Critical DMG to a Razor Clawmarked enemy, trigger another hit that deals 24% ATK (Rossi's) of Heat DMG and restores [Intellect × 0.08] HP to Rossi. If the target is also Combusted, then the aforementioned DMG and HP Restoration effects are increased to 1.5 times.
Elite 1
Outfitting
1. Elite 1
  Activate this to let the operator equip blue quality gear
2. Elite 2
  Activate this to let the operator equip purple quality gear
3. Elite 3
  Activate this to let the operator equip gold quality gear

Stat talent

Every tier taken

Agility: 60

Skirmisher at full unlock, summed across every tier. Elite rank gates the tiers as it gates the talents above.

Potentials

5 unlocks

P1
Origin of Admiration
Battle skill Crimson Shadow and combo skill Moment of Blazing Shadow improved: The DMG Multipliers of these skills are increased to 1.15 times of the original. Wolven Ambrage of the battle skill also returns 10 SP after hitting the enemy.
P2
Gap to Perfection
Agility +20, Critical Rate +7%.
P3
Tangible Duties
Talent Seething Blood improved: When triggered, it grants Base DMG Multiplier +8% and restores HP +[lntellect x 0.04].
P4
Innocent Wish
Ultimate "Razorclaw" Ambuscade improved: Ultimate Energy cost -15%.
P5
Legendary Destination
Ultimate "Razorclaw" Ambuscade improved: DMG Multiplier is increased to 1.1 times of the original; Critical DMG Dealt is increased by +30%.

Full bill

T-Creds, summed from the tables below

Level 90 and every skill at 12

814,900

T-Creds 15 material lines

Elite 4 and level 90

126,100

T-Creds 7 materials · 4 steps

All 4 skills at 12

688,800

T-Creds 4× the single-skill bill

Elite promotion

Level 1 → 90 in 4 steps

Elite 1
Pink Bolete ×3
Protodisk ×8
1,600T-Creds
Elite 2
Red Bolete ×5
Protodisk ×25
6,500T-Creds
Elite 3
Protoset ×24
Ruby Bolete ×5
18,000T-Creds
Elite 4
Cosmagaric ×8
Quadrant Fitting Fluid ×20
Protoset ×36
100,000T-Creds

Total to level 90

126,100 T-Creds

Cosmagaric

Quadrant Fitting Fluid

Pink Bolete

Protoset

Red Bolete

Ruby Bolete

Protodisk

Skill materials

Per skill · 4 levellable

→ 2
Kalkodendra ×1
Protoprism ×6
1,000T-Creds
→ 3
Kalkodendra ×2
Protoprism ×12
2,700T-Creds
→ 4
Chrysodendra ×1
Protoprism ×16
3,200T-Creds
→ 5
Chrysodendra ×1
Protoprism ×21
4,200T-Creds
→ 6
Chrysodendra ×2
Protoprism ×27
5,400T-Creds
→ 7
Protohedron ×6
Vitrodendra ×1
8,200T-Creds
→ 8
Protohedron ×8
Vitrodendra ×1
10,500T-Creds
→ 9
Protohedron ×15
Vitrodendra ×2
18,000T-Creds
→ 10
False Aggela ×3
Mark of Perseverance ×1
Metadiastima Photoemission Tube ×6
Protohedron ×15
24,000T-Creds
→ 11
False Aggela ×6
Mark of Perseverance ×2
Metadiastima Photoemission Tube ×16
Protohedron ×24
30,000T-Creds
→ 12
False Aggela ×12
Mark of Perseverance ×3
Metadiastima Photoemission Tube ×36
Protohedron ×50
65,000T-Creds

One skill at 12

172,200 T-Creds

False Aggela

Mark of Perseverance

Metadiastima Photoemission Tube

Chrysodendra

Kalkodendra

Protohedron

Vitrodendra

Protoprism

All 4 skills at 12

688,800 T-Creds

False Aggela

Mark of Perseverance

Metadiastima Photoemission Tube

Chrysodendra

Kalkodendra

Protohedron

Vitrodendra

Protoprism

Teammates

Similar operators

Build

Rossi FAQ

What attribute is Rossi?: Rossi is a 6-star Physical operator of the Guard class, from Endfield Industries, wielding a Sword, released in version 1.1.
What stat does Rossi scale on?: Rossi's skills multiply ATK. That is read from the scaling rows on the Battle Skill and Ultimate, not from the skill description, so it reflects what the game actually multiplies rather than what the text mentions.
What is the best weapon for Rossi?: Lupine Scarlet is the closest fit on the data: it is a 6-star Sword with 505 base ATK at level 90, and its skills act on ATK. Prominent Edge is the best 4-star alternative.
Which gear set should Rossi use?: MI Security. Its 3-piece effect is: 3-piece set effect: Wearer's Critical Rate +5%. After the wearer scores a critical hit, the wearer gains ATK +5% for 5s. This effect can reach 5 stacks. At max stacks, grant an additional Critical Rate +5%. This effect cannot stack. The 3-piece effect is the only set bonus a gear set has, and it needs three matching pieces; an operator equips four in all (Armor, Gloves and two Kits), so the fourth is free for an off-set piece.
How much does it cost to max Rossi's skills?: Taking one combat skill from level 1 to 12 costs 172,200 T-Creds and 21× False Aggela among other materials. The Materials tab lists every item per level.
What does Rossi P1 do?: Origin of Admiration: Battle skill Crimson Shadow and combo skill Moment of Blazing Shadow improved: The DMG Multipliers of these skills are increased to 1.15 times of the original. Wolven Ambrage of the battle skill also returns 10 SP after hitting the enemy.

Rossi

Key facts

Weapons

Gear

Skill priority

Best Potentials

Teams

Skills

Talents

Skirmisher

Nicks and Scratches

Seething Blood

Outfitting

Stat talent

Potentials

Origin of Admiration

Gap to Perfection

Tangible Duties

Innocent Wish

Legendary Destination

Full bill

Elite promotion

Skill materials

Related

Teammates

Similar operators

Build

Rossi FAQ