Special Stages · Stage 6

Mutation Lv.6

突然変異Lv.6

Mutation Lv.6 is a Battle Cats stage in Resident Undead. It costs 120 energy and sends 4 enemy spawn lines — led by Lord Gravey as the boss — against a 250,000 HP enemy base, and clearing it rewards 16,920 XP. Its enemies carry the Zombie trait, so cats that target it do the most work here.

Data updated: 2026-08-31

120Energy Cost
16,920XP Reward
250,000Enemy Base HP
6,000Stage Length
3Max Enemies
7.2Difficulty
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Cats that counter Mutation Lv.6

Cats whose attacks target Zombie, best DPS first — the traits this stage’s enemies actually carry:

Lovestruck Lesser DemonNezuko KamadoDaybreaker IzanagiMighty Rekon KorpsBalrogZangief

Stage rewards

100% — Cat Ticket ×1 · first clear

Enemy spawns (4)

EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotes
Lord Gravey100%10s—100%Boss
Cadaver Bear100%233.3s60s100%—
Miss Haka100%166.7s—100%—
Ms. Sign100%∞900s900s100%—
All Resident Undead stages