Underground Labyrinth · Stage 51

Underground B51F

地底51層

Underground B51F is a Battle Cats stage in Underground Labyrinth: The Grand Deep. It costs 40 energy and sends 6 enemy spawn lines — led by The Face as the boss — against a 600,000 HP enemy base, and clearing it rewards 2,256 XP. Its enemies carry the Red and Floating traits, so cats that target them do the most work here.

Data updated: 2026-08-31

40Energy Cost
2,256XP Reward
600,000Enemy Base HP
3,900Stage Length
25Max Enemies
9.1Difficulty
Build a lineup for this stage Test your team vs this stage

Cats that counter Underground B51F

Cats whose attacks target Red and Floating, best DPS first — the traits this stage’s enemies actually carry:

Chun-LiLovestruck Lesser DemonBunny & CanardDaybreaker IzanagiMighty Rekon KorpsSea Maiden Ruri

Stage rewards

50% — XP ×300,000 · Treasure Radar

Enemy spawns (6)

EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotes
B.B.Bunny3000%∞13.3s2s~3s100%—
Shy Boy800%140s—100%—
The Face1000%10.1s—99%Boss
B.B.Bunny3000%∞13.3s26.7s~30s99%—
Shy Boy800%36.7s26.7s~33.3s99%—
Shy Boy800%1-33.3s—99%—
All Underground Labyrinth: The Grand Deep stages