Isabella Guide collects build notes, tier position, skills, stats, teams, and related Mongil: Star Dive guides.
Isabella
Lazy Genius Engineer
5★ICEDestroyerRanger
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Role
Main On-Field DPS / SubDPS On-Field Breaker
Damage
10 / 10
Support
Can help break boss even at A0
Breaking
Very High
Field Time
100% as dps, 3-5s as Sub-dps
Community Analysis
Isabella looked to be the most disappointing unit but fortunately she didn't seem as bad as speculations make her out.
At A0F1 she has a slight edge over Ophelia A2F1 both in Conquest and Legendary Conquest. She can also be played as a sub-dps for teams that have A6 Ophelia as she can provide staggers/bursts even with limited field time.
Her sig also gives her amazing stats that alternatives won't even come close. A0 Isabella can do okay damage, but with F1 it's where she can do insane damage.
Her dupes basically increase her dmg, no hidden gimmicks for supporting potential or such.
A1: 2× Ult damage
A2: BA4 increase, +9-36% Ice dmg, and a longer tag-out sequence
A4: Switch skill +50% damage, and +2% additional damage for 8s
A6: Increase the stats on her passive, and gives her Pierce Rate (Def Shred)
Tier Position
K
Low Investment
T1
K
High Investment
T0.5
A2
K
Max Investment
T0.5
A6
Investment Scores
Ascension 09 / 10
Ascension 610 / 10
Rotations
BA4 > Skill > BA4 > Skill > Swap
DPS Rotation
Essentially you just get full energy charge before doing a skill. Make sure you use 2nd charge of skill only if you can switch out, since Isabella needs to proc Cooling Cycle
BA4 > Skill > Skill/Swap > Swap
Sub DPS Rotation
As sub-dps you can just do skill > Skill before swapping out. You can also add BA4 before 1 skill, just do 1 skill before switching, or do (BA4 > Skill) twice
Profile
Long ago, Isabella used her skills to help many people, but now, she only focuses on her private research. However, her compassionate nature from those days remains, so when someone comes to her for help, she reluctantly steps in.
Isabella attacks the enemy with a plasma reflector, dealing Ice DMG and gaining energy. Energy cannot exceed maximum capacity.
When energy reaches a certain level, Isabella's Basic Attack's 4th Hit is triggered, granting energy and inflicting Freeze. Also, Isabella's Charge Attack leads to Basic Attack's 4th Hit.
When Isabella remains on the field after using her Tag-out Skill, she uses her Basic Attack's 3rd and 5th Hit. Enemies hit by her Basic Attack's 5th Hit have their Neutralization RES decreased.
Isabella cannot gain energy with her Basic Attack when she's not being actively controlled.
1st Hit DMG:20.8%2nd Hit DMG:20.8%3rd Hit DMG:36.4%4th Hit DMG:146.6%5th Hit DMG:72.8%Charge Attack DMG:39.8%Air Counter DMG:74.5%Evasion Counter DMG:175.2%
Upgrade Requirements
Total Requirements (Lv.1 to 16)
78.500
45
25
25
3
25
25
Energy ConversionActive01
Isabella fires a shell at the enemy, dealing Ice DMG and inflicting Freeze.
Isabella's Special Skill DMG increases upon consuming energy while using her Special Skill. Consuming maximum energy all at once increases the Pierce Rate. This effect only applies to Isabella's Special Skill, then is removed.
DMG:841.1%Cooldown:30.0s
Upgrade Requirements
Total Requirements (Lv.1 to 16)
78.500
45
25
25
3
25
25
KilonovaUltimate
Isabella shoots a sphere of condensed reactive energy forward, drawing enemies in. An explosion occurs at the end of the energy reaction, dealing Ice DMG and inflicting Ice Affliction.
DMG:796.9%Cooldown:3.0s
Upgrade Requirements
Total Requirements (Lv.1 to 16)
78.500
45
25
25
3
25
25
RepulsionSkill_Tag
Isabella causes an explosion on the ground with her plasma reflector, dealing Ice DMG, and then leaps backward. Hit enemies are inflicted with Freeze, and the remaining cooldown for Isabella's Special Skill immediately decreases.
[Tag-out Skill] Isabella's Tag-out Skill is triggered upon switching to another teammate while Cooling Cycle is active, and Isabella remains on the field for a set duration and attacks enemies with her Basic Attack.
Switch Skill DMG:136.0%
Upgrade Requirements
Total Requirements (Lv.1 to 16)
78.500
45
25
25
3
25
25
Reactivity TestPassive
Isabella's Crit Rate increases, and ATK increases by a portion of Neutralization DMG Boost upon triggering Freeze on the enemy, but it doesn't increase above a set maximum.
Isabella gains Cooling Cycle upon using her Switch Skill or Special Skill. Cooling Cycle ends immediately upon gaining energy.
All unconsumed energy is removed upon switching to Isabella.
Ascensions
+1Lv.20 to 30
30.000
120Basic Destroyer Insignia
+2Lv.30 to 40
60.000
8Standard Destroyer Insignia
+3Lv.40 to 50
120.000
6Greater Destroyer Insignia
+4Lv.50 to 60
250.000
4Superior Destroyer Insignia
Canto
C1
Initiate Experiment
After Isabella's Ultimate Skill explodes, Lingering Energy remains at the location for 10s. Landing an Ice attack on the Lingering Energy causes a chain reaction, dealing additional DMG equal to 100% of the Ultimate Skill.
Requirement
1Seed of Destiny - Isabella
C2
A Fresh Perspective
Basic Attack's 4th Hit DMG increases by 182%.
Ice DMG increases by 9.1% for 4s upon gaining energy with Isabella's Basic Attack. (Max Stacks: Ability_Max_Stack:1019540101) New stacks reset the duration.
Basic Attack DMG increases by 20% for 6s upon using Isabella's Tag-out Skill. After the on-field duration ends, the Tag-out Skill is triggered one more time, causing Isabella to remain on the field and attack the enemy.
Requirement
1Seed of Destiny - Isabella
C3
A Relaxing Cup of Coffee
The skill levels of the Basic Attack, Switch Skill, Special Skill, and Ultimate Skill increase by 2.
Increases Basic Attack DMG by 6%.
Requirement
1Seed of Destiny - Isabella
C4
Calculated Success and Failure
Upon using Isabella's Switch Skill, a target appears at the location of the explosion, and supporting fire strikes the area, dealing additional DMG equal to 50% of the Switch Skill.
Also, enemies hit by the supporting fire become Embrittled for 8s. When in this state, enemies take additional DMG equal to % of the base DMG upon taking Ice DMG
Requirement
1Seed of Destiny - Isabella
C5
Caffeine for an All-Nighter
The skill levels of the Basic Attack, Switch Skill, Special Skill, and Ultimate Skill increase by 2.
Increases Special Skill DMG by 6%.
Requirement
1Seed of Destiny - Isabella
C6
Subtle Adjustment, Great Results
Enhances the effect gained upon triggering Freeze with Isabella's Passive Trait, increasing ATK by AbilityCanto_P2_R:10192800101% of Neutralization DMG Boost, up to AbilityCanto_P4_R:10192800101%, and increasing Crit Rate by AbilityCanto_P1_R:10192900101% and duration by 5s. Additionally, triggering Freeze increases Pierce Rate by 17.89% for 10s.
Requirement
1Seed of Destiny - Isabella
Story
Code's Right-Hand Woman #1
As a child, Isabella was a bright and passionate girl, and she firmly believed that her talents should be used to make the world a better place.
She took a keen interest in the corruption phenomenon that was gradually spreading across the world of Nirvan. Through her research, she came to the conclusion that the corruption wasn't merely an environmental problem, but a cosmic phenomenon that would one day bring about the end of Nirvan.
Most people, however, regarded corruption as little more than another form of pollution and failed to grasp the severity of the situation. As a result, Isabella began searching for like-minded companions. In the process, she learned of KrypTiiK, a company founded by an individual named Code. To prove her abilities and gain a position at KrypTiiK, she graduated from university early and immediately applied to KrypTiiK.
Code's Right-Hand Woman #2
Isabella had little trouble joining KrypTiiK, but she was not content with that alone. She wanted to meet Code as soon as possible to learn the direction KrypTiiK truly intended to pursue.
Isabella concluded that the fastest way to get close to Code was to rise through the ranks, and she achieved unbelievable results in an incredibly short time, earning promotions at an unprecedented pace. Before long, she had risen to a position where she could finally speak with Code directly.
At last, the long-awaited meeting with Code took place, and Isabella asked her everything she'd been wondering about. And, as expected, she was able to confirm that Code had founded the company in order to fight the corruption and unite the people of Nirvan against it.
Their meeting was brief, and they exchanged few words. Yet that short encounter was enough for Isabella to feel that she understood Code completely. She resolved that, if she was to fight against the destruction of the world, she must devote herself entirely to becoming Code's right-hand.
Failure and Escape
"Our plan to stop the Void's corruption has failed completely. We must prepare to leave this universe before Nirvan is destroyed." These were the words Code, the CEO of KrypTiiK, delivered to Isabella one morning.
At first, Isabella couldn't believe it—but she came to understand that Code had reached this conclusion only after much deliberation, and ultimately chose to follow her lead.
From then on, Isabella started working day and night to design the interdimensional vessel—the Ark—that Code had proposed. Her determination to keep working until the bitter end without ever giving into despair inspired countless people. They, too, found the strength to carry on and began working to survive, and the people of Nirvan united their efforts, allowing construction of the Ark to proceed without major difficulties.
The Ark #1
Code assigned an android named Rin to assist Isabella with the design of the Ark.
Though Rin was fully robotic, she possessed a personality as pure and innocent as a human child. Perhaps because she had only recently been created, or perhaps because she had simply been designed that way, she behaved much like a young girl. The people around her came to treat her like a littler sister, and she was dearly loved by everyone.
Yet beneath that childlike demeanor lay extraordinary computational abilities. She was capable of calculating every aspect of the enormous interdimensional vessel's design, catching even the tiniest human errors.
Perhaps because of this expertise, even Isabella, who rarely made friends and tended to view relationships strictly in the terms of what each side could offer, came to recognize Rin as a genuine partner in her work.
The Ark #2
Still, even with Rin's assistance, creating a spaceship large enough to carry all the survivors of Nirvan between dimensions was no easy task.
Although Isabella was considered a genius, she simply couldn't find a solution. Yet Code examined each problem and immediately came up with answers, surprising Isabella.
In the end, Isabella could only conclude that Code possessed something far beyond ordinary human abilities.
Eventually, the Ark was complete, and it launched with countless Nirvanians on board.
Early in the journey, it flew with no destination besides fleeing the disaster at its back. Even so, it was a relief to have saved so many lives—at least for the time being.
Doubts About Code #1
One day, while Isabella was working in her private office aboard the Ark, Rin's friend Ran came to visit her.
Ran had come unexpectedly, bringing along a damaged android named Rue, who had been slated for disposal. She requested that Isabella repair Rue.
It was rare opportunity to personally examine and repair one of the androids built by Code, so Isabella agreed to take on the job.
As Isabella worked on Rue, however, she began to grow deeply suspicious of what had caused the android's damage. Rue had been damaged by the very Void corruption that had destroyed Nirvan.
Given the circumstances, it seemed like Code was still conducting experiments involving the Void. Determined to resolve her lingering questions, Isabella decided to personally contact Code.
Doubts About Code #2
However, Code hadn't appeared publicly since the Ark's departure, and she completely ignored Isabella's attempts to contact her. Eventually, Isabella gave up trying to reach Code and instead attempted to hack into KrypTiiK's system to uncover information about her. It was only then that Code finally appeared, personally interfering to stop Isabella.
It was the first chance Isabella had in a long time to talk to Code, and she did not waste the opportunity. She asked what her plan was, but Code only offered a few words—that everything was for the sake of Nirvan—before cutting off communication.
Isabella was left with doubts, but she trusted Code had good intentions and decided to put her suspicions aside.
Arrival in Belana
The Ark eventually arrived in the Gaba Archipelago, a group of islands in the middle of the ocean on a world called Belana. The Nirvanians landed the Ark on the island at the center of the archipelago and, under Isabella's directions, began constructing a settlement they could call home.
They used not only supplies that had been carried aboard on the Ark, but also dismantled the massive Ark itself, repurposing its materials to build their new settlement.
It wasn't easy work constructing a settlement to safely house all the Nirvanians—but everyone came together, from the capable people under Isabella's command to Ortus, a group known for its radical views. Thanks to their united efforts, a habitable settlement quickly took shape.
Losing the Spark #1
Yet there was one individual who stood apart from it all: Code, who had saved the people of Nirvan and led the Ark to Belana.
There were never any doubts that she had done everything out of love for the people of Nirvan... but after arriving in Belana, she shut herself away in her room, leaving Rin and Ran to handle everything in her stead and completely withdrawing from affairs beyond her door.
With Code gone, KrypTiiK lost its center. Ortus, led by Ada, broke free of KrypTiiK's control and began to operate as an independent faction.
Isabella tried several times to inform Code of what was happening, but Code refused to see anyone, and without her intervention, the situation only spiraled.
Losing the Spark #2
Then, one day, an incident occurred: Bianca, Isabella's friend and fellow researcher, was detained by Ortus, and Isabella rushed to Ortus's headquarters to rescue her, causing a commotion.
But Bianca had not been detained at all. Rather, she had gone to Ortus of her own accord, and even Code came to Ortus's defense. When Isabella demanded to know what Code was thinking, Code dismissed her, saying that she had never told Isabella to concern herself with such things, and then disappeared.
In hindsight, that was how things had always been. Even before they'd left Nirvan, Code had only ever given Isabella orders, and Isabella's respect for and loyalty to Code was one-sided.
This realization caused an abrupt change in Isabella. She lost her passion for her work and interest in her research. It was as though she wanted to bury the version of herself who had worked to the bone all those years. Her motivation drained like air from a deflated balloon, and she began doing the bare minimum of what was expected of her.
Losing the Spark #3
With no remaining drive or passion and no reason to remain with KrypTiiK for any longer, Isabella left the company that she had once devoted her entire life to.
After all her years working for the sake of Nirvan, the apathy that followed was immense. Whatever Code and Ada were up to, whatever new crisis might threaten the world now, all of it felt trivial to her. Her new goal was just to get through each day, and to never become a burden or stand out in any way, but simply stay in perfectly in the middle.
ICE
120
8
6
4
