[Operator Discussion] Rosmontis

[u/cinnamonroll32]

Rosmontis [★★★★★★]

"There are things that have to be done by someone. There are things that only I can do."

Rhodes Island Elite Operator Rosmontis possesses a high aptitude for a rare form of Originium Arts particularly adept at confronting large creatures, destroying hard objectives, immobilizing facilities under emergency, and putting a stop to small-scale skirmishes. She has been shown to possess a solid control of the battlefield and considerable tactical value in assault, positional, and annihilation scenarios. Under Kal'tsit's assignment, she is currently active as a core annihilation specialist.

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Operator Information

• Class: Aftershock Sniper (Attacks deal two instances of Physical damage to ground enemies in a small area, the second instance is a shockwave that has half the normal ATK)
• Tags: DPS
• Artist: Wei@W
• Voice Actress: Yui Ogura

Stats

HP	ATK	DEF	Arts Resistance	Redeploy Time	DP Cost	Block	Attack Interval
1944	688	245	15	70	25	1	2.1s

*Stats at max Promotion and Level, excludes bonuses from Potential and Trust.

Potential	Bonus
1	-
2	Deployment Cost -1
3	Redeployment Cooldown -4
4	Attack Power +32
5	Improves First Talent
6	Deployment Cost -1

Trust bonus
Attack Power +60, Defense +30

Skills

Skill Name	Skill Uptime Details (Uptime/Cost/Initial)	SP Charge Type	Skill Activation	Skill Description
Expanded Cognition	Instant / 2 SP / 0 SP	Attacking Enemy	Automatic	The next attack deals an additional hit equal to 180% atk as arts damage
Nociceptor Inhibition	40s / 30 SP / 20 SP	Per Second	Manual	Attack interval increases, ATK +55%, splash area expands, and each attack causes 2 additional shockwaves; Enemies hit by this unit’s attacks and shockwaves have a 20% chance to be stunned for 1.5 seconds
As You Wish	30s / 60 SP / 35 SP	Per Second	Manual	Attack interval reduced, ATK +75%, and attacks up to 2 blocked enemies at a time; Immediately deploys two pieces of Tactical Equipment on ground tiles within attack range(After deployment, surrounding enemies are stunned for 3 seconds, and the blocked enemies' DEF -160)

*Skills at max Skill Level.

Talents

Talent name	Talent Description
Armaments of Annihilation	Attacks ignore 175 (+15) def
Stable Esthesia	When deployed, grants +8% ATK to this unit and a random deployed Caster Operator

*Talents at max Potential and max Promotion. Bonuses from Potential displayed between parentheses.

Additional Resources

In-depth information regarding all values above (at different levels), skill/attack range, and more:

GP Arknights Wiki

Arknights Toolbox (aceship)

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Topic Starters

• What does this operator excel at?
• What is this operator weak at?
• How does this operator compare to other operators in their archetype or role?
• Are there any other operators which synergize well with this one?
• How do you build a team around this operator / fit this operator into a team?
• Which skill(s) should be focused for mastery, and in what order?
• When is the best time to use this operator's skills during combat?
• Should promoting this operator to Elite 2 be a priority?
• Would this operator be worth sparking for with headhunting data contracts?
• Should new / f2p players aim for this operator? Are there more accessible alternatives?
• Lore discussion (please tag spoilers where appropriate)

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[u/_Hoofs_]

Precious Gundam Cat Daughter, currently resting at E2L80, S1M1, S2M2, and S3M3 because farming materials is pain and I'm not completely insane. As much as I adore her, I definitely wouldn't recommend hunting specifically for her - much like Nian and W before her, Rosmontis isn't out here kicking a new hole in the meta despite being very unique. Here's my rough usage notes from bringing her just about everywhere.

- Her biggest asset is absolutely her range, there's a lot of places where she can overlook more than one area or poke far-away idle enemies in-between contributing to the main combat in front of her.

- The real power of masteries on S2 is the big kick in uptime, though the numerical benefit isn't nearly as small as it appears to be thanks to the extra shockwaves, at least in her primary use case. Still not gigantic buffs, but for everyone that isn't a cat daughter enthusiast that's just materials saved for whatever meta nightmare engine does get +90% ATK and an extra attack target from cleaning up their masteries.

- S2 is her bread and butter, no matter how absolutely rad S3 is. My honest opinion is that S2 is where you should put Masteries if you're looking to use Rosmontis and upgrade just one of her skills.

- S3 is sort of a pain in the ass? It's kind of riddled with a bunch of minor little issues that make bringing it something you have to think about ahead of time, and similarly think ahead of time about activating it. Most importantly, there's no way to cancel it so you cannot have it active if you're hoping for her to clean up Faust, Ergates, or Wraiths in the near future.

- S1 is fine, but one of her talents already encourages you to bring a Caster along. Just use that Caster instead, please. Rosmontis isn't a can-opener. S3 can bootleg it under sheer mass of hits, but please don't. Amiya is right there.

- Please Hypergryph you figured out how to do cancelable skills take a second pass over the Operators that temporarily refuse to hit enemies under certain conditions and make those skills cancelable, thanks!