As far as grenade damage goes, she's pretty awful, falling behind even Papasha Mod for raw damage. However, she supports other grenadiers and she has +30% FP as a formation buff. YMMV.

Thot Twin #1

Honestly, what you should be looking for in a beginning tank SMG. Decent HP pool, good dodge, a smoke grenade that slows enemies, good aura to support an AR squad, really the standard to which you'll hold early tanks to. Overall, probably the best to have for general use until you get RO635 mod.

If you want more info on her mod, look at her mod article.

...You will get her a lot. Most common 4 star SMG. Terror of LSC and master of milk tins. With her unique gear, she's a good dodge tank with a slightly worse invul skill than Thompson or G36C. Without it, she's instead kinda-sorta able to dodge. Which is not bad, but also not great. Has an awkward to use aura unless she's the main tank, which you'd rather have the UMP sisters for. Still better than nothing though. Also gets you into jail. Do not give her protein shakes.

Her mod article can be found here

Actually has one of the highest evade ratings among the SMGs and posseses a skill with really good uptime (15/16!), but kinda eh tile buffs. So why just "usable?"... Because other SMGs exists, and does it better in every way. In addition to having other features that make it better like being able to increase damage or accuracy or evade passively, permanently, and it is very hard to recommend her knowing that something superior in every way is kinda... you know, there.

She's... not great. Basically a worse Suomi with slightly better base evade, a rather worse multiplier, and considerably worse HP. Her tiles aren't great either. Actually worse than MP5 once MP5's milk tin is taken into account. Buffs aren't anything to write home about either. Given you should be trying to get the UMP sisters early on anyway, you're better off with cheaper tanks until you get those.

Not to be confused with PP-19. Like all smoke grenade SMGs not named UMP45, she suffers from the fact that UMP45 exists. Or more pertinently, now that RO mod exists. Basically a cross between UMP45 and UMP9, she uses the same smoke grenade stats and having slightly less evasion and slightly more HP she's about as good at tanking, but her buff tiles are awful compared to UMP45's.

In older times she was an alright choice back when there weren't as many SMGs, but these days you should have more choices and if you REALLY need a smoke, Ingram (especially now that you get a free one) can probably tide you over until you get UMP45.

Quite literally a 4* Vector. Marginally better evasion and HP, marginally worse firepower and molotov multiplier, identical buff tile. But like Vector, she...is unfortunately not particularly relevant anymore.

Thot twin #3?!

And probably the one that's going to give me a fucking heart attack. Yes, her skill has big numbers. Biiiiig nuuuuuuumbers. Now get your dick off your phone screen and start using your brain:

• If she does not use her active, she slowly gains evasion over time. Emphasis on slowly.
• If she does use her active, her evasion slowly drops down to "nonexistent", making her a sitting duck if she's tanking.

In a proper tanking role, her buff tiles are literally useless: 500% crit buff x 5% SMG base crit rate = 30% crit rate if you aren't running a suppressor or a crit scope, and if you are using those, your SMGs will have shit-tier accuracy even if you stack reasonable amounts of buffs on them. At the same time you're losing out on AR buffs, which will extremely cripple your DPS. You're better off bringing C-MS or RO635 to buff your back line instead. Even Suomi can buff her evasion up faster than UMP40 could ever hope to.

If she does use her active skill, it'll similarly take incredibly long for her to really ramp up her damage skill – at 18+ seconds to get her damage above 2* ARs, she competes with Negev for the title of "slowest stacking skill in the game", and SR-3MP consistently out-DPSes her even without any buffs. With the UMPs' exclusive equip. Without, her damage output is even worse.

You can build some silly 5 SMG meme echelons around her that sometimes don't totally suck, but unless you know what you're doing, you should put her on cafe duty.

Not to be confused with PP-19-01. Decent stats, interesting buff tile, but like all grenade SMGs kinda superfluous.

Between Zas (same area, more damage, enemy debuff), molotovs (a lot more damage and damage over time, smaller area), and airstrikes (all the area, more damage) there's plenty of better options to sacrifice your enemies on the altar of Megumin. Can be pressed into service if you're really lacking off tank options, I guess.

Extra notes available.

Thot Twin #2

Almost as good as her sister. More dodge, slightly less hp, and a flashbang instead of a smoke grenade. Largely interchangeable with UMP45 for most things, but bosses aren't stunned by flashbangs. Slightly worse aura.

Her mod can be found here

Yet another very small rifle that got classed as an SMG. Basically a 4 star SCW, but with much better tiles and less blah %s on the skill. Stats are ok, but not exceptional. Like SCW, trades some firepower for more +eva on the skill. Whether this is worth it... ehhh YMMV. Personally not, but maybe it'll help for some of you?The big thing is really the nice tiles with some extra shootiness. Not the most impressive offtank but there are worse ones and she'll get the job done for most basic applications.

She's sufficiently straight offtank that there isn't much to say

She seems to have forgotten her skirt or pants, and has a very interesting discussion with SOPMOD about the nature of dolls. She also likes collecting cigarette packs.

There is a reason I'd rather be talking about her setting details than her performance. In the story, she mentions she's actually part of a logistics unit instead of a combat unit, and you can see why.

Her stats are middle of the road, and the skill is actually fairly unremarkable. Uptime is worse than than Suomi or MP7, while also giving worse final numbers. Combine with not impressive HP, middling tiles and the fairly easy availability of better SMGs, and you can see why keeping her in your own logi teams is probably doing her a favour.

Uh.... we came upon a weird timeline wherein frankly, if she had a +FP special item? She'd beat out Vector in a lot of cases. Now she only beats her in many cases and honestly might have more utility.

She learned to be less dumb with her tiles and actually they go BACKWARDS now. Wow. The buff percentages still aren't super impressive but she's no longer a dead slot for buffs. The damage she causes with that second skill? Surprisingly really high, especially in clusters. If lots of enemies are on fire next to each other, then they all affect each other with the burn, which can be really nasty vs some of the later ultra-dense enemy packs.

Aside from that, she's just a Molotov off-tank with an extra nice skill. She doesn't bring anything super new to the table as much as she's the pretty nice version of a dish you thought you'd never like.

She gets debuffs that work even if the flashbang part of her skill doesn't, which makes her slightly more useful than a normal flashbang SMG. On the other hand, she's still a modded doll and thus expensive to build. She isn't useless, but justifying her cost when so many good mods exist that you'd want to get before her means that by the time you get her, she's probably not going to be your number one pick anyway.

4* version of JS 9 with slightly different stat spread (worse eva, basically) and awkward tiles. Can be used similarly to her, if you don't mind kiting her more to make up for the goofy positioning.

Her biggest advantage is that you will be farming 12-4E enough to get sufficient copies of her to x5 link her for free, but by the time you can reach 12-4E you should have better SMGs.

So overall… meh. Does the job, but so will others.