Special Stages · Stage 7
Mutation Lv.7
突然変異Lv.7
Mutation Lv.7 is a Battle Cats stage in Resident Undead. It costs 150 energy and sends 10 enemy spawn lines — led by Dread Bore as the boss — against a 500,000 HP enemy base, and clearing it rewards 21,150 XP. Its enemies carry the Zombie and Angel traits, so cats that target them do the most work here.
Data updated: 2026-08-31
150Energy Cost
21,150XP Reward
500,000Enemy Base HP
4,500Stage Length
15Max Enemies
8.2Difficulty
Enemy spawns (10)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 The Thrillerz | 150% | 6 | 0s | 6.7s~13.3s | 100% | — |
 Heavenly Hippoe | 250% | 2 | 10s | 20s | 100% | — |
 Zackie Peng | 200% | 3 | 20s | 10s~16.7s | 100% | — |
| The Thrillerz | 150% | ∞ | -6.7s | 13.3s~26.7s | 99% | — |
 Zuche | 150% | 5 | -6.7s | 10s~13.3s | 99% | — |
 Angelic Gory | 150% | 3 | -5s | 20s | 99% | — |
 Zir Zeal | 200% | 2 | -3.3s | 30s | 99% | — |
| Heavenly Hippoe | 250% | ∞ | -1.7s | 40s~60s | 99% | — |
 Dread Bore | 120% | 1 | 0s | — | 99% | Boss |
 Ms. Sign | 100% | ∞ | 900s | 900s | 100% | — |