Raid Info
Raid Info

Keberon the Underflame

Updated: Oct. 27, 2026

Legendary
Keberon the Underflame
  • Argonites
  • Argonites
  • Attack
  • Force
  • +28% Attack in all battles
Stats for ★★★★★★ level 60 · fully ascended · no gear
Health 15,030
Attack 1,454
Defense 1,123
Speed 99
Crit. Rate 15%
Crit. Damage 63%
Resistance 30
Accuracy 10
Buffs:
Debuffs:
Positive effects:
  • Fill Turn Meter
  • Heal
Mechanics:
  • Ignores Shield
  • Ignores Unkillable
  • Ignores DEF
  • Fills own Turn Meter
  • Heals self

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3D model: on a display coin — the faction banner on the front, the alliance coat of arms on the back. Drag to rotate, scroll or pinch to zoom.

Best in CampaignFaction Wars

Optimal pick

65 Usefulness 76 × availability 0.85 Keep — don't feed How is it calculated?

Useful in: Mid gameLate gameEndgame

Ratings by location
  • Campaign 84 AoE damage · Turn Meter fill, extra turn · HP Burn
  • Arena 70 AoE damage · Turn Meter fill, extra turn · Speed
  • Demon Lord 72 Decrease DEF · Single-target damage · Turn Meter fill, extra turn
  • Dungeons 78 Single-target damage · Pierces protection: ignores DEF, Stone Skin, Shield, Block Damage, Unkillable · AoE damage
  • Hydra 81 Single-target damage · Survivability (HP × DEF) · AoE damage
  • Faction Wars 78 AoE damage · Turn Meter fill, extra turn · Speed
  • Doom Tower 80 AoE damage · Turn Meter fill, extra turn · Speed
  • Live Arena 70 Turn Meter fill, extra turn · Speed · Control: Stun, Freeze, Sleep, Fear, Petrification
  • Cursed City 75 AoE damage · Turn Meter fill, extra turn · Speed
  • Chimera 79 Single-target damage · Survivability (HP × DEF) · Decrease DEF
  • Grim Forest 69 AoE damage · Turn Meter fill, extra turn · Speed

How to get

Availability: Hard

Skills

Damage multipliers: 4.65 × ATK means the hit deals 4.65 times the champion's Attack before enemy Defense.

Fiery Rend

A1 Fiery Rend

Attacks 1 enemy 2 times.

Has a 75% chance of placing a 60% Decrease DEF debuff for 2 turns.

Has a 50% chance of attacking with this skill whenever an enemy has a HP Burn debuff activated on them. Occurs once per turn.

Damage based on [ATK] = 1.8 × ATK (2 hits)

Searing Brand

A2 Searing Brand

Attacks 1 enemy 2 times. Before attacking, places a Deathbrand debuff on the target for 2 turns.

Will ignore Unkillable and Shield buffs, as well as 25% of the target’s DEF.

Activates this Champion’s Pyrenei Power skill if the target is killed. If the target survives, fills this Champion’s Turn Meter by 50% instead.

Damage based on [ATK] = 2.8 × ATK (2 hits) · Ignores 25% DEF · Ignores Shield, Unkillable

Pyrenei Power

A3 Pyrenei Power

Attacks all enemies. Before attacking, places a 50% Increase ACC buff on all allies for 2 turns.

Has a 75% chance of placing a HP Burn debuff on all enemies for 2 turns.

Fills this Champion’s Turn Meter by 20% for each HP Burn debuff placed on enemies, and fills this Champion's Turn Meter by 10% for each HP Burn debuff resisted by enemies.

Damage based on [ATK] = 4.5 × ATK

Underflame's Protection

A4 Underflame's Protection (Passive) Unlocks at ascension 3

Active Effect

Activates a Delay effect on this Champion whenever they receive a fatal hit.

Passive Effect

Heals this Champion by 20% of their MAX HP whenever a HP Burn debuff is activated on an enemy.

Whenever a HP Burn debuff on an enemy expires or is removed, places a True Fear debuff on that enemy for 1 turn.

Healing based on [MAX HP] = 20% MAX HP

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Increase ACC Buff

Increases the Champion's Battle ACC by 25% or 50%.

Decrease DEF Debuff

Decreases the Champion’s Battle DEF by 30% or 60%.

HP Burn Debuff

When a Champion under a HP Burn debuff starts their turn, they and all their allies take damage equal to 3% of their individual MAX HP. There can only be one HP Burn debuff active on a Champion at a time.

Fear Debuff

There are two versions of this debuff: Fear and True Fear.

When a Champion with Fear Debuff attempts to use a skill, there is a 50% chance that the skill will not activate, and the Champion will lose their turn.

When a Champion with True Fear debuff attempts to use a skill, there is a 50% chance that the skill will not activate, and the Champion will lose their turn. The skill they attempted to use will go on cooldown.

Deathbrand Debuff

Champions under a Deathbrand debuff will receive the Block Revive debuff when killed.

Unkillable Buff

The Champion cannot fall below 1 HP when the Unkillable buff is active. Its duration cannot be increased.

Shield Buff

The Champion's HP bar is reinforced with a Shield for the indicated number of turns. Damage is calculated as normal but is first applied to the Shield (unless the attack is stated to ignore Shields). When the Shield buff expires, or the value of the Shield reaches 0, the buff is removed and any further damage is applied as normal.

Skill mechanics A1 · Fiery Rend

EffectValueTargetChanceStatus
Damage 1.8 × ATK ×2 Target — —
Debuff — Same target 75% Decrease DEF 60% · 2 turns
Activate skill — Same target 50% —

Skill mechanics A2 · Searing Brand

EffectValueTargetChanceStatus
Debuff — Target — Deathbrand · 2 turns
Damage 2.8 × ATK ×2Ignores 25% DEFIgnores Shield, Unkillable Target — —
Activate skill — Random enemy — —
Fill Turn Meter 50% Turn Meter Attacker — —

Skill mechanics A3 · Pyrenei Power

EffectValueTargetChanceStatus
Buff — All allies — Increase ACC 50% · 2 turns
Damage 4.5 × ATK All enemies — —
Debuff — Same target 75% → 100% booked HP Burn 3% · 2 turns
Fill Turn Meter 20% Turn Meter Self — —
Fill Turn Meter 10% Turn Meter Self — —

Skill mechanics A4 · Underflame's Protection

EffectValueTargetChanceStatus
Delay — Self — —
Heal 20% MAX HP Self — —
Debuff — Same target — True Fear · 1 turn