Last updated: 30/07/2026
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Arbiter of the Lost Abyss is weak to Physical · Fire · Lightning · Imaginary. Bring characters of these elements to break its 360 Toughness fastest.
⚠ Dangerous moves to watch out for
This skill is flagged as a dangerous, telegraphed move in the game's source data — prepare to guard or dodge when you see the wind-up.
Summoned minions
Base stats (multiplier base)
HP
27,900
ATK
18
DEF
210
SPD
144
Elemental RES
Physical
0%
Fire
0%
Ice
20%
Lightning
0%
Wind
20%
Quantum
20%
Imaginary
0%
Best counters
Calculate Dan Heng • Permansor Terrae's damage vs this enemy →
Enemy versions
| # | HP × | ATK × | DEF × | SPD × | Elemental Weaknesses |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 1 | 1 | |
| 2 | 1 | 1 | 1 | 1 | |
| 3 | 1 | 1 | 1 | 1 | |
| 4 | 1.1 | 1 | 1 | 1 | |
| 5 | 1.1 | 1 | 1 | 1 | |
How to beat it
- Bring Physical · Fire · Lightning · Imaginary characters to break its Toughness — other elements barely dent it.
- It resists crowd control by 75% — binds, imprisons and turn-delays mostly fail. Don’t build around control.
- It summons more enemies — bring AoE, single-target damage alone will stall.
Skills
Deals Imaginary DMG to one designated target. If the target has a Shield, triggers "Barrier Recoil."
Summons "Ichor Memosprite: Pheasant." When each summon is defeated, triggers "Barrier Recoil."
Locks on to one designated character, increases this unit's SPD, and uses "Hemotort Teethgrind" and "Hemotort Saw" on the target within several turns. Take 1 extra action after using this ability.
Deals massive Imaginary DMG to one designated target and converts a portion of the hit target's reduced HP into "Corrosion." If the target has Shield, triggers "Barrier Recoil."
Deals massive Imaginary DMG to all targets and converts a portion of the targets' reduced HP to "Corrosion."
Enters the Charging state. In the next action, uses "Hemotort Decapitation." Selects 1 target to receive the highest DMG of "Hemotort Decapitation" and "Hemotort Corruption."
Deals Imaginary DMG to target characters not selected with "Name the Culprit." Deals massive Imaginary DMG to target characters selected with "Name the Culprit," and applies "Hemotort Corruption" based on the amount of DMG taken (not offset by Shield) to the selected characters.
At the start of battle and upon entering a new phase, this unit enters the "Enhance Defense" state, greatly increasing this unit's DEF. After being Weakness Broken, dispels the "Enhanced Defense" state.
When triggering "Barrier Recoil," this unit receives 1 stack of DEF reduction.
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."\nAfter an "ichor memosprite" with "Monoform Merger" takes action, this unit's "Bloodline Frailty" reduces by 1.\nWhen 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."
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 of that friendly unit and deals True DMG to it.
Publisher Battle Tips
- Boss Mirage takes 50% less DMG. After Weakness is Broken, action gets additionally delayed and DMG taken increases by 100%.
- After Boss Mirage uses "Hemotort Teethgrind" and "Hemotort Saw" to hit an ally target, "Barrier Recoil" is triggered if the attacked ally target has a Shield. Defeating the summons summoned by "Execution in Place" triggers "Barrier Recoil." When Boss Mirage triggers "Barrier Recoil," it reduces this unit's Toughness and DEF. If an ally inflicts a debuff on Boss Mirage and its summons when using an attack, slightly reduces the Toughness of that enemy unit and deals True DMG to it.
- At the start of combat and during phase transitions, Boss Mirage splits into 5 "ichor memosprites" and applies "Monoform Merger" to these summons. When all "ichor memosprites" with "Monoform Merger" enter the "Feigned Death" state, they merge back into the Boss Mirage.
Stats By Level
| Lv | HP | ATK | DEF |
|---|---|---|---|
| 1 | 22,320 | 12 | 210 |
| 20 | 84,407 | 53 | 400 |
| 40 | 265,736 | 155 | 600 |
| 60 | 1,471,004 | 338 | 800 |
| 80 | 4,129,507 | 552 | 1,000 |
| 100 | 10,151,141 | 773 | 1,200 |
Debuff resistance
Summons
FAQ
What is Arbiter of the Lost Abyss weak to?
Arbiter of the Lost Abyss is weak to Physical · Fire · Lightning · Imaginary — hitting this element breaks its Toughness faster.
What rank is Arbiter of the Lost Abyss and how much Toughness does it have?
Arbiter of the Lost Abyss is a Elite Boss with base Toughness 360.
What faction does Arbiter of the Lost Abyss belong to?
Arbiter of the Lost Abyss belongs to the Ichor Memosprite faction.
Profile
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."
Up next for you…
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