The Hollow

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Boss The Hollow name.png
Boss versus screen image
Base HPStage HP
22
0
Table dividing line 1.png
Ingame Appearance
In-game appearance

Entity ID
19.1
Table dividing line 2.png
Found In
Boss
Stage The Catacombs icon.png
Super Secret Room Icon.png
Double Trouble
Stage The Depths icon.png
Degraded Boss
Stage The Depths icon.pngStage Necropolis icon.pngStage Dank Depths icon.png
Stage The Womb icon.pngStage Utero icon.pngStage Scarred Womb icon.png
Stage Sheol icon.png
Table dividing line 3.png
Dropped Items
Boss Boss

The Hollow is a boss that can appear in The Catacombs The Catacombs.

It has 22 HP per segment.

Behavior[edit | edit source]

The number of individual The Hollow bodies that can spawn each fight can vary from 1-4. The most common encounter with The Hollow is with 2 bodies.

  • Flies around the room diagonally, bouncing off of walls.
    • The Hollow appears to travel faster when moving at verticle angles compared to horizontal.
    • The Hollow can change direction if it collides with Isaac.
  • Occasionally spawns poop while moving.
  • The Hollow's segments can be split into smaller copies of the boss as long as the new Hollow segments are longer than 2 pieces.

There is a chance that a Grub can spawn alongside a shorter Hollow (basically replacing a second Hollow).

Champion Versions Needs to be unlocked[edit | edit source]

  • Dark Grey: 15% larger and has 25% more HP (27.5). Each segment that isn't the head spawns a Boom Fly when killed.
    • The head will spawn a Boom Fly only if killed immediately after spawning.
  • Gold: 15% larger and has 25% more HP (27.5). Each segment that isn't the head will drop a coin on death.
    • The head will drop a coin only if killed immediately after spawning.
  • Green: Chance for each segment that isn't the head to spawn a Charger on death. Occasionally stops movement to shoot 3 bullets at wherever it is facing.
    • The head will spawn a Charger only if killed immediately after spawning.

Gallery[edit | edit source]

Notes[edit | edit source]

  • Piercing tears make fighting The Hollow much easier, as each tear can damage multiple segments.
    • Added in Repentance Piercing shots no longer damage segmented enemies multiple times per attack.

Trivia[edit | edit source]

  • The Hollow was added in the Wrath of the Lamb DLC for the original The Binding of Isaac.
  • It is the posthumous version of Larry Jr..
  • The definition of hollow is empty on the inside or surface, which could explain the boss's paleness and complexion.
  • The Hollow is the only boss that has three Champion versions.
  • The Hollow is the only regular boss that can be spawned by Mega Satan between thresholds.

Bugs[edit | edit source]

Bug Bug! Removed in Afterbirth † Sometimes this boss will get stuck in the wall when slowed.



Bosses Boss Monstro.png
Chapter 1
Stage The Basement icon.pngStage The Cellar icon.pngStage Burning Basement icon.png
GeminiStevenBlighted OvumDingleThe Duke of FliesFamineGurglingsThe HauntLarry Jr.MonstroPinWidowThe FallenThe Headless Horseman
DangleLittle HornRag ManTurdlings
Baby Plum
Chapter 1.5
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Chapter 2
Stage The Caves icon.pngStage The Catacombs icon.pngStage Flooded Caves icon.png
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Bumbino
Chapter 2.5
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Brownie
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Chapter 3.5
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Sisters VisThe Matriarch
???
???
Hush
Corpse
Stage Corpse icon.png
ChimeraThe ScourgeRotgutMother
Chapter 5
Stage Sheol icon.pngStage Cathedral icon.png
SatanIsaac
Chapter 6
Stage Dark Room icon.pngStage The Chest icon.png
???The LambMega Satan
The Void
Stage The Void icon.png
Delirium
Home
Stage Home icon.png
DogmaThe BeastUltra DeathUltra FamineUltra PestilenceUltra War
Greed Mode
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Ultra Greed
Ultra Greedier
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