Collaboration Stages · Stage 4
地下鉄に乗るっ — Stage 4
くいな橋
地下鉄に乗るっ — Stage 4 is a Battle Cats stage in 地下鉄に乗るっ. It costs 150 energy and sends 7 enemy spawn lines — led by B.B.Bunny as the boss — against a 100,000 HP enemy base, and clearing it rewards 88,830 XP. Its enemies carry the Red trait, so cats that target it do the most work here.
Data updated: 2026-08-31
150Energy Cost
88,830XP Reward
100,000Enemy Base HP
3,600Stage Length
20Max Enemies
5.1Difficulty
Enemy spawns (7)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 Jackie Peng | 400% | 2 | 3.3s | 13.3s~20s | 100% | — |
 B.B.Bunny | 400% | ∞ | 0s | 23.3s~26.7s | 100% | — |
 Dagshund | 100% | 5 | 0s | 20s | 99% | — |
 Moe Uzumasa & Doge | 300% | 1 | 0s | — | 99% | — |
 Misa Ono & Doge | 70% | 1 | 0s | — | 99% | — |
| B.B.Bunny | 10% | 1 | 0s | — | 99% | Boss |
 Ms. Sign | 100% | ∞ | 900s | 900s | 100% | — |