Arbiter of the Lost Abyss
Last updated 2026-07-20
"Even as we speak, farewells are happening throughout the universe."
This page contains information about removed content that may or may not return in a future version.
Arbiter of the Lost Abyss is a Boss Enemy part of the Ichor Memosprite faction.
Enemy Info
A trace of lingering madness extracted and refined by Evernight from the countless corpses of ichor memosprites, then synthesized into more twisted and grotesque monsters.
It shall follow the creator's directive, determining what should be remembered and what should be forgotten, devouring redundant memories that serve no purpose and leaving them muted in the flow of time.
"If a new life is to be born, its seed has to be dead."
It shall follow the creator's directive, determining what should be remembered and what should be forgotten, devouring redundant memories that serve no purpose and leaving them muted in the flow of time.
"If a new life is to be born, its seed has to be dead."
Stats
| Damage RES | ||||||
|---|---|---|---|---|---|---|
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| 0% | 0% | 20% | 0% | 20% | 20% | 0% |
| Debuff RES | |||||||
|---|---|---|---|---|---|---|---|
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| 0% | 0% | 0% | 0% | 0% | 0% | 0% | 75% |
| Level | HP | ATK | DEF | SPD | Eff. H. R. | Eff. RES |
|---|---|---|---|---|---|---|
| 1 | 22,320 | 12 | 210 | 144 | 0% | 30% |
| 10 | 49,601 | 26 | 300 | 144 | 0% | 30% |
| 20 | 84,407 | 53 | 400 | 144 | 0% | 30% |
| 30 | 146,269 | 98 | 500 | 144 | 0% | 30% |
| 40 | 265,736 | 155 | 600 | 144 | 0% | 30% |
| 50 | 617,709 | 234 | 700 | 144 | 0% | 30% |
| 60 | 1,471,004 | 338 | 800 | 144 | 8% | 34% |
| 70 | 2,650,142 | 436 | 900 | 158.4 | 16% | 38% |
| 80 | 4,129,508 | 552 | 1,000 | 172.8 | 24% | 40% |
| 90 | 6,599,319 | 663 | 1,100 | 190.08 | 32% | 40% |
| 95 | 8,214,366 | 718 | 1,150 | 190.08 | 36% | 40% |
| 100 | 10,151,141 | 773 | 1,200 | 190.08 | 40% | 40% |
| 120 | 40,604,565 | 1,082 | 1,200 | 216 | 56% | 40% |
Skills
- Phase 1
- Phase 2
Hemotort Teethgrind
[Single Target]
10 Energy
Execution in Place
[Summon]
Hemotort Glower
[Lock On]
Hemotort Saw
[Single Target]
15 Energy
Hemotort Clamps
[AoE ATK]
10 Energy
Thick-Skinned
[Talent]
At the start of battle and upon entering a new phase, this unit enters the "Enhance Defense" state, greatly increasing this unit's DEF (150%). After being Weakness Broken, dispels the "Enhanced Defense" state.
Barrier Recoil
[Talent]
When triggering "Barrier Recoil," this unit receives 1 stack of DEF reduction (10%).
Degraded Vessel
[Talent]
This unit and its summons gain "Degraded Vessel." If a target inflicts a debuff when using an attack on an friendly unit with "Degraded Vessel," slightly reduces the Toughness (15) of that friendly unit and deals True DMG (0.5% Boss Max HP) to it.
Singularity Split
[Talent]
When Combat begins and when changing phases, this unit splits into "Ichor Memosprite: Pheasant," "Ichor Memosprite: Canine," and "Ichor Memosprite: Winged Serpent," and these "ichor memosprites" gain "Monoform Merger," while this unit gains "Bloodline Frailty." (48)
After an "ichor memosprite" with "Monoform Merger" takes action, this unit's "Bloodline Frailty" reduces by 1.
When all "ichor memosprites" with "Monoform Merger" enter the "Feigned Death" state, they undergo merger again to become the "Arbiter of the Lost Abyss," reducing the Toughness of the "Arbiter of the Lost Abyss" based on the remaining amount of "Bloodline Frailty." (10 per Stack)
After an "ichor memosprite" with "Monoform Merger" takes action, this unit's "Bloodline Frailty" reduces by 1.
When all "ichor memosprites" with "Monoform Merger" enter the "Feigned Death" state, they undergo merger again to become the "Arbiter of the Lost Abyss," reducing the Toughness of the "Arbiter of the Lost Abyss" based on the remaining amount of "Bloodline Frailty." (10 per Stack)
Hemotort Decapitation[AoE ATK]
15 Energy
Deals Imaginary DMG to target characters (400% ATK) not selected with "Name the Culprit." Deals massive Imaginary DMG to target characters (1200% ATK) selected with "Name the Culprit," and applies "Hemotort Corruption" based on the amount of DMG taken (not offset by Shield) to the selected characters.
Hemotort Teethgrind
[Single Target]
10 Energy
Execution in Place
[Summon]
Hemotort Glower
[Lock On]
Hemotort Saw
[Single Target]
15 Energy
Hemotort Clamps
[AoE ATK]
10 Energy
Name the Culprit
[Charging]
Thick-Skinned
[Talent]
At the start of battle and upon entering a new phase, this unit enters the "Enhance Defense" state, greatly increasing this unit's DEF (150%). After being Weakness Broken, dispels the "Enhanced Defense" state.
Barrier Recoil
[Talent]
When triggering "Barrier Recoil," this unit receives 1 stack of DEF reduction (10%).
Degraded Vessel
[Talent]
This unit and its summons gain "Degraded Vessel." If a target inflicts a debuff when using an attack on an friendly unit with "Degraded Vessel," slightly reduces the Toughness (15) of that friendly unit and deals True DMG (0.5% Boss Max HP) to it.
Singularity Split
[Talent]
When Combat begins and when changing phases, this unit splits into "Ichor Memosprite: Pheasant," "Ichor Memosprite: Canine," and "Ichor Memosprite: Winged Serpent," and these "ichor memosprites" gain "Monoform Merger," while this unit gains "Bloodline Frailty." (48)
After an "ichor memosprite" with "Monoform Merger" takes action, this unit's "Bloodline Frailty" reduces by 1.
When all "ichor memosprites" with "Monoform Merger" enter the "Feigned Death" state, they undergo merger again to become the "Arbiter of the Lost Abyss," reducing the Toughness of the "Arbiter of the Lost Abyss" based on the remaining amount of "Bloodline Frailty." (10 per Stack)
After an "ichor memosprite" with "Monoform Merger" takes action, this unit's "Bloodline Frailty" reduces by 1.
When all "ichor memosprites" with "Monoform Merger" enter the "Feigned Death" state, they undergo merger again to become the "Arbiter of the Lost Abyss," reducing the Toughness of the "Arbiter of the Lost Abyss" based on the remaining amount of "Bloodline Frailty." (10 per Stack)
Unique Status Effects
Debuffs
| Icon | Name | Description |
|---|---|---|
 | Hemotort Corruption | Take a set amount of — Imaginary DMG at the beginning of the turn. |
Others
| Icon | Name | Description |
|---|---|---|
 | Accomplice | "—" takes damage when using "Hemotort Decapitation." |
 | First Offense | (Unremovable) When "Arbiter of the Lost Abyss" uses "Hemotort Decapitation", they take maximum damage, and if any DMG is not offset by Shield, they will be inflicted with "Hemotort Corruption." |
 | Penance Prep | (Unremovable) Use "Hemotort Decapitation" in the next action. This effect is dispelled when this unit becomes Weakness Broken. |
 | Pursuer | (Unremovable) Increases SPD by 50%. Will launch — instance(s) of Single Target attacks on —. This effect is dispelled when this unit's Weakness is Broken. |
| Pursuit Target | (Unremovable) Will receive — instances of Single Target attacks from "Arbiter of the Lost Abyss." If this unit has Shield, when hit by "Arbiter of the Lost Abyss's" Single Target attacks, reduces Toughness. This effect is dispelled when "Arbiter of the Lost Abyss" is Weakness Broken. |
 | Monoform Merger | (Unremovable) When receiving fatal damage, enters the "Feigned Death" state. When all "ichor memosprites" possessing "Monoform Merger" enter the "Feigned Death" state, they merge back into the "Arbiter of the Lost Abyss." |
 | Bloodline Frailty | (Unremovable) After every action, the "ichor memosprite" with "Monoform Merger" reduces "Bloodline Frailty" by 1 point. When the "ichor memosprite" merges back into the "Arbiter of the Lost Abyss," reduces the Toughness of the "Arbiter of the Lost Abyss" based on the remaining amount of "Bloodline Frailty." Currently remaining "Bloodline Frailty": — point(s). |
 | Degraded Vessel | (Unremovable) If an ally inflicts a debuff on an enemy unit with "Degraded Vessel" when using an attack, slightly reduces that enemy unit's Toughness and causes them to take True DMG. |
Gameplay Notes
- Immediately after combat begins and when changing phases,
Arbiter of the Lost Abyss splits into the following enemies (from left to right):
Ichor Memosprite: Pheasant
Ichor Memosprite: Canine (75% Action Advance)
Ichor Memosprite: Winged Serpent (100% Action Advance)- Ichor Memosprite: Canine (25% Action Advance)
- Ichor Memosprite: Pheasant (50% Action Advance)
- Ichor Memosprites summoned by the above split have increased stats:
- Ichor Memosprite: Pheasant: +20 SPD, +50 Toughness
- Ichor Memosprite: Canine: +70 Toughness
- Ichor Memosprite: Winged Serpent: +24 SPD, +40 Toughness
- Mutual Complement (Stage 3+): Increases the Max HP of these enemies, and they have Shared HP in Phase 2.
- When Ichor Memosprites summoned by the split enter the "Feigned Death" state, they are removed from the Action Order and will not recover.
- When the split ends, Arbiter of the Lost Abyss is re-added to the Action Order at its previous Action Value.
- Ichor Memosprite: Pheasant summoned using Excecution in Place have increased Toughness depending on the difficulty:
- Stage 1-2: +10 Toughness
- Stage 3: +20 Toughness
- Stage 4: +30 Toughness
- Economies of Scale (Stage 4): For every enemy that is not in the "Feigned Death" state and not Arbiter of the Lost Abyss, all enemies receive all enemies receive 4% less DMG and deal 4% more DMG.
Other Languages
| Language | Official Name |
|---|---|
| English | Arbiter of the Lost Abyss |
| Chinese (Simplified) | 迷惘之渊的裁定者 |
| Chinese (Traditional) | 迷惘之淵的裁定者 |
| Japanese | 迷いの淵の裁定者 |
| Korean | 길 잃은 심연의 판정자 |
| Spanish | Árbitro del Abismo de la Perplejidad |
| French | Juge du gouffre des égarés |
| Russian | Арбитр бездны замешательства |
| Thai | ผู้ตัดสินแห่งห้วงสับสน |
| Vietnamese | Kẻ Phán Quyết Vực Thẳm Mê Muội |
| German | Richter des verlorenen Abgrunds |
| Indonesian | Arbiter of the Lost Abyss |
| Portuguese | Árbitro do Abismo Perdido |
Change History
Released in Version 4.3
