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The Hollow

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Xxx form2Isaac scribble RebirthKeeper sprite

The Hollow
260x220-The Hollow2
Offical artwork by Edmund McMillen
Floor(s) Catacombs
Larry Jr.
Item Drop(s) Common Drops

WotL Common Drops

Rebirth Stats

The Hollow is the posthumous version of the boss Larry Jr. that spawns in the Catacombs.


It consists of two enemies; each flies diagonally across the screen.

The movement of the boss resembles that of Fistula, though each segment can change the angle at which it bounces around the room, making dodging more difficult. The segments can be damaged and destroyed individually like with Larry Jr., which causes piercing tears to be very effective against him. If the room is filled with rocks, players may find themselves having a hard time dodging the Hollow, as the rocks will block player's movement (unless the player can fly), while the Hollow can fly over them.

Like with Larry Jr, each of the Hollow's segments are destroyed separately, therefore using The Necronomicon will instantly kill the Hollow.

The Hollow has a higher chance of appearing if you've killed Larry Jr before.

Champion Variants


Hollow yellow

Each segment drops a coin when destroyed.


Hollow black

Each segment spawns a Boom Fly when destroyed.


Hollow green

Shoots a row of three bullets as an additional attack. Each segments spawns a Charger when destroyed.



  • Sometimes, the green champion variant of The Hollow will use Larry Jr.'s head sprite when firing blood shots.
    • Similarly, the green champion variant of Larry Jr. will use The Hollow's head sprite when firing blood shots.
  • When the head of the Hollow spawns, the guts of a Host will be visible underneath, but will disappear after the smoke fades.


Magdalene vs. The Hollow - TBoI 101:05

Magdalene vs. The Hollow - TBoI 1.333 Petden

The Hollow fight

Basement Larry Jr.MonstroThe Duke of FliesGeminiStevenFamine
Cellar WidowPinThe Duke of FliesFamineGurdy Jr.The Blighted Ovum
The Caves FistulaPeepGurdyChubC.H.A.D.Pestilence
Catacombs The HuskThe HollowThe Blighted OvumThe Carrion QueenPeepPestilenceThe WretchedGurdy Jr.
The Depths LokiMonstro IIGishWarMom
Necropolis Mask of InfamyDaddy Long LegsThe Carrion QueenThe BloatLokiWarThe WretchedMom
The Womb ScolexBlastocystThe BloatDeathConquestDaddy Long LegsTriachnidTeratomaMom's HeartIt Lives
Utero TeratomaThe BloatDeathConquestDaddy Long LegsTriachnidLokiiMom's HeartIt Lives
Sheol The FallenSatan
Cathedral Isaac
The Chest ???
First to fifth and seventh level The FallenHeadless Horseman
Devil Room Krampus

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