Collaboration Stages · Stage 3
A Mystery Girl
謎の少女
A Mystery Girl is a Battle Cats stage in Annihilated City. It costs 50 energy and sends 12 enemy spawn lines — led by Yuki (Enemy) as the boss — against a 75,000 HP enemy base, and clearing it rewards 7,050 XP. Its enemies carry the Red and Floating traits, so cats that target them do the most work here.
Data updated: 2026-08-31
50Energy Cost
7,050XP Reward
75,000Enemy Base HP
4,400Stage Length
12Max Enemies
3.1Difficulty
Enemy spawns (12)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 Doge | 100% | 8 | 5s | 8s~12s | 100% | — |
 Snache | 100% | 8 | 8s | 8.3s~14.7s | 100% | — |
 Those Guys | 100% | 8 | 10s | 10s~16.7s | 100% | — |
 Sir Seal | 100% | 1 | 20s | — | 100% | — |
 Le'boin | 200% | 1 | 26.7s | — | 100% | — |
 B.B.Bunny | 100% | ∞ | 80s | 16.7s~26.7s | 100% | — |
 Pigge | 100% | ∞ | 100s | 26.7s~40s | 100% | — |
| Those Guys | 100% | ∞ | 120s | 16.7s~26.7s | 100% | — |
| Sir Seal | 100% | 5 | 0.1s | 16.7s | 99% | — |
 One Horn | 100% | 1 | 0.1s | — | 99% | — |
 Yuki (Enemy) | 50% | 1 | 0.1s | — | 99% | Boss |
 Ms. Sign | 200% | ∞ | 900s | 900s | 100% | — |