Alternative Forms




Deals AOE Arts damage

Operator Description

Lava, Caster Operator of Rhodes Island, will make way for the squad with her Originium Arts.

Operator Quote

Please handle her relationship with Operator Hibiscus carefully.

Obtain Approach

Recruitment & Headhunting
Headhunting: Yes Recruitment: Yes
Release Date (CN) 4/30/2019
Release Date (Global) 1/16/2020
Recruitment Pool Date (CN) 4/30/2019
Recruitment Pool Date (Global) 1/16/2020


Potential Item

Lava's Token A specially processed sheath. It is covered in deliberately mysterious patterns.


Immediately obtains 15 Skill Points after deployment
Immediately obtains 20 (+5) Skill Points after deployment
Immediately obtains 30 Skill Points after deployment
Immediately obtains 35 (+5) Skill Points after deployment
Talents from Module Upgrades


Arts Resist
Redeploy Time
DP Cost
Attack Interval


SP Cost:
Initial SP:
SP Charge Type
Skill Activation
20 Seconds
20 Seconds
20 Seconds
20 Seconds
20 Seconds
20 Seconds
20 Seconds
Skill Effect
ASPD +10
ASPD +15
ASPD +20
ASPD +30
ASPD +35
ASPD +40
ASPD +50
Detailed Skill Info
attack_speed 10
attack_speed 15
attack_speed 20
attack_speed 30
attack_speed 35
attack_speed 40
attack_speed 50

RIIC Base Skills

Room Type:
Power Plant
When this Operator is assigned to a Power Plant, increases the drone recovery rate by +10%
Room Type:
When this Operator is assigned to a Factory, Originium formula related productivity +35%

Quick Evaluation

+ Trait: Attacks splash to nearby enemies
+ Talent: Immediately gain SP on deploy - allows quick Skill use
+ Good stats for a 3*
+ Wont hold you back on most content if you didn't pull any of the 4*+ AOE casters
- Not worth using more resources than is required to pass content, as all the higher rarity AOE casters are direct upgrades

Operator Overview

“When on the battlefield, you've gotta act like it. I bet those people brought up in greenhouses have never thought about how you're supposed to aggravate or defeat the enemy. Ain't that right, Doctor?”

Lava talks and dresses like an antisocial Goth, so you might not be expecting her proactive attitude towards working with other people. At a young age, she started taking care of poor orphans in her Victorian neighborhood, and their many plights touched her deeply. Her fiery commitment to social improvement is mirrored by her Originium Arts, which allow her to conjure flames from her magical athame knife as a 3* AoE Caster.

The textbook example of an AoE Caster, Lava’s wide-range Arts attacks are perfect for burning through groups of weak enemies that would otherwise overwhelm your Operators by sheer force of numbers. Her Talent, Quick Skill Usage, gives her SP when she is deployed so she can more quickly use her Skill, Tactical Chant α, which increases her attack speed. Slow attack speed is a big weakness for AoE Casters, so this is a helpful Skill indeed.

Lava can be very useful in the early game, when Doctors may not have access to many AoE options. However, she starts to fall behind as AoE Snipers, AoE Guards, and higher-rarity AoE Casters enter the picture. Her Talent doesn’t help her to stand out (most Operators are granted Initial SP for their Skills by default) and she can’t E2-promote, so her long-term growth is limited. Even so, AoE Arts damage is such a tremendously useful tool that Lava can stay relevant for a good long while.

Newbie Tier List Explanation

A good, cheap option for early swarm stages.

Integrated Strategies Tier List Explanation

General IS Notes

+ Can take care of early rushes of enemies during earlygame.
+ 0 Hope Cost.
- Very expensive to deploy.
- Doesn't scale well past early game.

IS2 Specific Notes

Good Relics

Relic Interactions

Recommended Promotion

E1 Max recommended, as it is a pretty low investment.

Skill Upgrade Costs

Level Requisites Materials
1 ➝ 2
2 ➝ 3
3 ➝ 4
4 ➝ 5
5 ➝ 6
6 ➝ 7

Overall Skill Cost

Elite Upgrade Costs

Level Materials

Overall Elite Cost

Total Cost

Operator Missions

Requires [Alter] version unlocked; Unlocks at E1, Level 1 (Server: NA)
Requires [Alter] version unlocked; Unlocks at E1, Level 55 (Server: NA)

Operator Profile

Artist Xiàyě Hóng Míng
CV Kaori Mizuhashi
CV (EN) Díana Bermudez
CV (CN) 谢莹
CV (KR) 金荷英
Gender Female
Place of Birth Victoria
Birthday June 22
Race Sarkaz
Height 154cm
Combat Experience
Half a year
Infection Status Infection confirmed by medical examination.
Physical Strength Normal
Mobility Normal
Physiological Endurance Normal
Tactical Planning Normal
Combat Skill Standard
Originium Adaptability Standard


Born in Londinium in Victoria, Lava is the younger twin sister of her fellow Operator, Hibiscus. After contracting Oripathy, she came to Rhodes Island for treatment. She found the idea of saving lives appealing, and so volunteered for training.

Clinical Analysis

Increase Trust to 25.
Imaging tests have shown the outlines of her internal organs to be indistinct due to abnormal shadows. Originium granules have been detected in her circulatory system, confirming her to be infected with Oripathy.

[Cell-Originium Fusion Rate] 9.4%
She presents no obvious external symptoms of Oripathy.

[Blood Crystal Density] 0.25 u/L
Degree of infection is minor and has not had any physical impact.

Originium Arts Rating

Increase Trust to 50.
Under the guidance of her Originium Arts instructor, Lava learned how to control basic Arts in less than a month despite never touching Originium before. Her methods are still rudimentary, and at present she can still only use simple flame conversions, but her stability and learning speed are astounding. If she trains for a long period of time, she may be able to reach a very high level.

Archive File 1

Increase Trust to 100.
Unlike other stray children hiding in dark alleys, Lava was born into a relatively normal middle-class Victorian family. Lava believes that one must personally put in effort to help others, rather than stand at a distance. When she was young, she enjoyed working with the poor and the orphaned. She was very aware how much pain they suffered, which planted in her heart the seeds of compassion and justice.

Archive File 2

Increase Trust to 150.
Lava is tough and ignores the advice of others when she moves into action. In fact, she is gentle and childlike at heart but prefers not to admit it to herself. Whenever anyone brings this up, she immediately changes the subject and tries to play it cool.

Voice Lines

Appointed as Assistant Need something? If you don't ,how about some divination?
Talk 1 Just tell me when there's work to do. But don't ever put her and me on the same team. I hate her guts. And don't get me started on all the weird food she makes me eat... Just thinking about it makes me... euurghh...
Talk 2 No one told me Hibiscus was at Rhodes Island before I got here... It's too late for me to quit now.
Talk 3 If you grow up sheltered, you don't know how to taunt, how to destroy, and how to handle yourself in a real fight. Am I right, Doctor?
Talk after Promotion 1 Have you ever heard the saying 'little sisters are justice'? If that's true, then my big sis is evil by default... at least as far as I'm concerned.
Talk after Trust Increase 1 Instruments? I can play the piano a little. My teacher in Leithanien said learning an instrument can improve your Arts affinity. It also apparently eases the impact that Oripathy has on your mind...
Talk after Trust Increase 2 I'm starving... Huh, what's this? You keep sweets in here? Nom... I'm in the middle of training. Should I really be eating this?
Talk after Trust Increase 3 See, like, I don't have a big beef with Hibiscus... It's all water under the bridge. I'm fine with her as long as she doesn't force me to eat her medicine and food. After all, she was the one... who saved my life...
Idle I almost envy your ability to sleep like a log...
Onboard I'm Lava, a Caster, here to join you simply because I'm bored and want something to do… But I heard my sworn nemesis is here too, though... Can I just quit now?
Watching Battle Record Thanks.
Promotion 1 Did you forget? I don't need a cause to work for, and I don't need a team... but... thanks, I guess...
Added to Squad As far as teamwork's concerned... I don't mind, as long as nobody messes up.
Appointed as Squad Leader I'm not good at this sort of stuff, but if you insist...
Depart Let's go. Keep an eye on my back.
Begin Operation I can see their souls. They're mine to reap.
Selecting Operator 1 What are you waiting for?
Selecting Operator 2 Hurry up.
Deployment 1 Come on.
Deployment 2 That's it.
In Battle 1 It's game over for you.
In Battle 2 Even the dead can't save you.
4-star Result The supreme form of Arts. I'm interested in seeing what it's like.
3-star Result I foresaw this result earlier. A perfect victory.
Sub 3-star Result Well… My fortune telling isn't always right. Sometimes there's a lot of external noise that affects the outcome.
Operation Failure Dammit... These evil spirits are too strong...
Assigned to Facility Oh, come on. I'd rather be alone.
Tap Don't touch me! Uaghh!
Trust Tap Eh, you're not scoring any points with me like that!
Title Arknights.
Greeting Oh, it's you, Doctor. Morning.

Operator Records

Record: 'Sisters'
Unlock: E1, Level 55, Trust Required: 50
Record: 'Caring'
Unlock: E1, Level 55, Trust Required: 200

Paradox Stages

Stage Name: mem_lava_1
Unlock: E1, Level 55
The swarm is a piece of cake for Lava. She's sure she can handle this exercise by herself.
As part of her training, the steady and prolonged casting will help her control her Arts, while the exploding ones mixed in with the normal slugs will be a test of the operator's battlefield alertness.