Underground Labyrinth · Stage 98
Underground B98F
地底98層
Underground B98F is a Battle Cats stage in Underground Labyrinth: The Grand Deep. It costs 50 energy and sends 6 enemy spawn lines — led by Bun Bun Black as the boss — against a 350,000 HP enemy base, and clearing it rewards 2,820 XP. Its enemies carry the Black and Floating traits, so cats that target them do the most work here.
Data updated: 2026-08-31
50Energy Cost
2,820XP Reward
350,000Enemy Base HP
4,500Stage Length
20Max Enemies
9.4Difficulty
Enemy spawns (6)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 Doge Dark | 400% | 6 | 10s | 16.7s~20s | 100% | — |
 Dark Otter | 100% | 1 | 20s | — | 100% | — |
 Bun Bun Black | 150% | 1 | 0s | — | 99% | Boss |
| Doge Dark | 400% | ∞ | -6.7s | 16.7s~20s | 99% | — |
 Gory Dark | 200% | 1 | -53.3s | — | 99% | — |
| Dark Otter | 100% | 1 | -90s | — | 99% | — |