Meta guide

A must-have support for burn teams at V0 and an amazing universal support at V2 if you can get her extra copies. However, if you only plan to use her in a burn team, V0 is perfectly fine. Her signature provides a great buff too, but if you have V2 Vector, it can be left for a rerun since it loses some value.

Physical hyper carry. Outside gunsmoke, basically an auto-win doll that decimates everything. In GS one of the best damage dealers.
Plan to eventually get her to V6 if you are building this team, with a nice V3 breaking point in the middle.

Alva elevates freeze team, and is perfectly fine on V0. While Robella provide great damage, Alva provide everything else and also decent damage for support character. If you are planning to use Freeze team, then start with her.

Electric hyper carry, if you are building this team, plan to upgrade her to V6.

When building hydro team you start with Springfield V1R1. She is getting better with every V, so you might invest in her over time.

Core unit for Corrosion team one of the best damage dealers in the game both AOE and ST. She is hyper carry that wants V6, but V3 is good stepping point. Until V6 use alternative weapons instead of pulling for signature.

Either keep her at V0 for dorm meta or go all in for V6; nothing in between is worth the investment (linear and minor upgrades), last upgrade literally doubles her V5 damage. If you don't own Klukai she can replace her, or you can start building a 2nd Corro team.

Solid damage. With V1 she can also replace Florence (for DEF DOWN) if you are also using Nikketa and OTs-14.

First dual element doll with great damage, but she works best in freeze team.

Great unit for Electric, even on V0. Enables Blade team if you can invest to V6.

Definitely a core pick for hydro fans. At minimum, you'll want to pull V1R1. Going above that depends on your love for hydro team and how far you want to go with the rapidly upcoming OTs.

Overperformer, the V0 GOAT. Solid unit from V0 that takes Peritya slot in corrosion team, and probably will stay there for a while. She has a decent upgrade for her support capabilities up to V3 and then a lot of damage past that.

The second hypercarry for physical teams. She exceeds Voymastina's single-target damage but loses out in AoE situations. She's a great pick for Gunsmoke, but for anything else, it's probably better to save for Voy.

One of the highest damage potential but only useful on long boss battles where she can shine with her stacking mechanics.

She is one of the best support in the game and absolute core to run physical team.

Burn hyper carry, best way to increase burn team damage is to invest in her.

For new tile team you need V1 and also worth to invest up to V2 which gives Blazing Assault II buff and dispels debuffs.

Since day 1 one of the best units in the game and a core of burn team. Set her as focus on standard banner.

She has decent damage on V0, not really worth to invest it after that.
For tile team choose one between her, Sharkry and Peri.

One of top damage dealers that replace Peritya, but with OTs release in the future you will have to decide between her, Nemesis and Lind.

Versatile doll that can work in Hydro team, but she needs high investment, preferable use platoon V6 instead of pulling and save for hyper carries like Qiuhua.

V0 is decent, V3 gives her main power in cooldown reduction for Freeze dolls where she becomes solid doll and is good stopping point.

Good unit, especially on high investments, but after OTs release you have to choose between her, Phaetusa and Nemesis.

Our favorite nurse. It might hurt, but it's totally worth it.
Currently, only source of DEF DOWN in Hydro team. No point in investing as she is completely fine on V0.

Use highly invested out of these three or which one fits current boss:
Ullrid, Lainie, Daiyan

For long time hydro hyper carry when invested, but with OTs-14 and Mityl on the horizon, probably not worth to invest past V1.

For long time a core electric unit, but it's on the risk to be replaced with next electric doll.

Currently, core part of corrosion team but is on risk to be replaced by any upcoming corrosion unit, all depends on your investment levels of other dolls.

In global still useful for Freeze but will be replaced very soon with OTs-14.

She can pull some nice numbers but require R1 and movement can be tricky on some bosses.
Use highly invested out of these three or which one fits current boss:
Ullrid, Lainie, Daiyan

If you are pulling her consider going for V1R1 right away. Her weapon is great RF that can replace signatures for other dolls. Beside that she will be first to replace with Soppo, so take that into consideration.

V1 is very good upgrade, but she is first to take out after OTs is released and used for Electric team.

Solid unit to pull for ELE team, completely fine on V0. V1 and 2 give her minor incremental damage, so better to invest in other units.

She requires Springfield V1 to enable 3 attacks per turn. Decent damage but soon will be replaced with OTs.

Use highly invested out of these three:
Sharkry, Sakura, Peri

Still ok damage, but you should replace her with Cheyanne as soon as she is released.

At this point replaced with Helen, but she is still decent if you don't have her. V1 is good upgrade, but better to save for Helen or other dolls from Freeze team.

Still doing decent damage and can synergy with other dolls.
At this point last 4* unit that is actually used and good doll to invest from standard lineup.

Fortifications can be maxed for free (weekly boss battles reward), but her scaling is on the weaker side, so you can replace her with any DPS.
Can be used in broken line up for One Punch Helen build.

Use highly invested out of these three or which one fits current boss:
Ullrid, Lainie, Daiyan

If you are pulling for GS, then this is easy skip. She is purelly defensive oriented and her damage is subpar, better to save for other units.

Not worth it, get Basti instead.

She is unfortunately weak from release. But if you don't have anything else she is ok support for dolls like Ullrid with multiple attacks.

She is not worth it, better to wait for Leva banner.
She requires Andoris or other doll that enable positive charge.

She was weak on release, and it's simply not worth it to pull her.

Doll is no longer used, but her weapon (Svarog) is one of the best SMG in the game that easily can replace many signatures, you can max it for free from platoon store.

Not worth it.

V0 Great healer
V1 Good offensive buffs
Replaced by Vector modkey.

Not worth it.

Not worth it.

Not worth it.

If you are missing units for your team, Ksenia is decent pick as healer and buffer.

Not worth it to invest any resources.

Can be used in Helen broken line up for One Punch Helen. Otherwise, replaceable as soon, as you pull anything else.

Ok support in early game. Replace as soon as you can.

In early game without solid line up, great addition but otherwise no point in using her.

Not worth it.

Still ok to use in corrosion teams if you are missing some dolls, but she is first to replace because of lack of damage.

Ok damage if somehow you max her from standard banner, but easily replaceable by other units.