Main Chapters · Stage 15
Cats of the Cosmos Ch. 2 (Zombie) — Stage 15
卵星雲
Cats of the Cosmos Ch. 2 (Zombie) — Stage 15 is a Battle Cats stage in Cats of the Cosmos Ch. 2 (Zombie). It costs 75 energy and sends 8 enemy spawn lines — led by Cadaver Bear as the boss — against a 261,000 HP enemy base, and clearing it rewards 5,200 XP. Its enemies carry the Alien and Zombie traits, so cats that target them do the most work here.
Data updated: 2026-08-31
75Energy Cost
5,200XP Reward
261,000Enemy Base HP
5,000Stage Length
10Max Enemies
9.1Difficulty
Enemy spawns (8)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 UltraBaaBaa | 300% | 5 | 10s | 13.3s~16.7s | 100% | — |
 The Thrillerz | 200% | 8 | 20s | 13.3s~16.7s | 100% | — |
 Zuche | 200% | 1 | 20s | — | 100% | — |
 Cadaver Bear | 200% | 1 | 53.3s | — | 100% | Boss |
| Zuche | 200% | 3 | 60s | 23.3s | 100% | — |
 Zroco | 300% | 5 | 60s | 16.7s | 100% | — |
 Star Peng | 300% | 1 | 80s | — | 100% | — |
 Ms. Sign | 100% | ∞ | 900s | 900s | 100% | — |