Underground B31~39/41~49/51~59F

Boss

• The Face 1000% magnification HP999,990 Attack20,000 AppearsBase HP ≤ 99%

Enemies 3 types

Enemy	Count	Mag.	HP	Attack	First	Respawn
From the start 2 types
B.B.Bunny	Unlimited	3000%	15,000	1,500	13.33s	2–3s
Shy Boy	1	800%	280,000	4,000	40s	—
Once base HP ≤ 99% 3 types
The Face Boss	1	1000%	999,990	20,000	Immediately	—
B.B.Bunny	Unlimited	3000%	15,000	1,500	Immediately	26.67–30s
Shy Boy	3	800%	280,000	4,000	Immediately	26.67–33.33s
Shy Boy	1	800%	280,000	4,000	after 33.33s	—

HP and attack include the magnification. Identical spawn lines are merged (2×7 = seven lines that each spawn 2). Enemies with a base HP condition start appearing once it is met.

Spawn timeline

Scroll sideways to see more. The number under each enemy is when it appears (seconds). For enemies with a base HP condition, move the slider to set when the condition is met.

An estimate using the game's spawn rules. Ranged intervals use the midpoint, and the on-screen enemy limit is ignored, so when many enemies pile up they appear later than shown.