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-121061695This article refers to both the original game and the remake.-119875774
IsaacHDIsaac RebirthKeeper sprite
For the monster from The Legend of Bum-bo, see Gaper.

Gaper (ぽかんと口を開けて見とれる人 Pokanto kuchi o akete mitoreru hito) are monsters appearing in The Binding of Isaac: Rebirth.

Gapers are commonly found in Chapter 1 only.


They are children that resemble Isaac, but have blood instead of tears, a smile, and paler skin.


Gapers will attempt to walk towards Isaac by taking the most direct route possible, and deal damage by contact. If there is no way to reach Isaac, due to obstacles such as Rocks or Poop blocking the way, they will stand still and avoid moving towards Isaac until a proper route is created. They can be also seen with Frowning Gapers in pack.

On occasion, they can turn into Pacers or Gushers after dying.


  • They can be spawned by Mom.
  • A pair of Gapers may appear at the beginning of the boss fight with Monstro.


  • The word "gaper" is a person who stares, typically in amazement or wonder.
    • Its Japanese name "Pokanto kuchi o akete mitoreru hito" translates to "People who admire and gaping mouth open".
  • The Gaper, Mulligan, Hive and Swarmer are all the same monster in stages of decay and infestation. The Gaper seems to be the fresh corpses, before decay sets in.[1]


TBoI information

The Binding of Isaac

Gapers are monsters appearing in The Basement and The Cellar.

Normal monsters
I Blob-button

I. Blob
More monsters coming soon...
Flies Black FlyAttack FlyMoterEternal FlyPooterFat FlyBoom FlyRed Boom FlyDrowned Boom FlySuckerSpitDart FlySwarm FlyRing FlyLevel 2 FlyFull FlyHush FlyBall of Flies
Spiders SpiderBig SpiderTriteRaglingRag TriteLevel 2 SpiderTicking SpiderBaby Long LegsCrazy Long LegsWall CreepBlind CreepRage Creep
Spheres BoilGutSackBlue BoilWalking Variants
Mulligans MulliganMulligoonMulliboomHiveSwarmerNestDrowned Hive
Headless HopperFlaming HopperLeaperPacerGusherSplasher
Gapers GaperFrowning GaperGurgleMr. MawFlaming GaperCyclopiaSkinnyRottyNullGreed GaperBlue GaperSwinger
Heads HorfPsychic HorfMawRed MawPsychic Maw
Globins GlobinGazing GlobinBlack GlobinDank Globin
Knights KnightSelfless KnightFloating KnightBone Knight
Blobs ClottyClotMega Clotty
Maggots MaggotChargerSpittyConjoined SpittyDrowned ChargerGrub
Body parts Mask + HeartBrainMemBrainGutsMama GutsEyeBloodshot EyeMom's HandDead Mom's HandScarred GutsNerve EndingStone Eye
Worms Para-BiteCod WormScarred Para-BiteRound WormNightcrawlerRoundyUlcer
Leeches LeechKamikaze LeechHoly Leech
Poop DipCorn DipBrown DipSquirtDank SquirtDinga
Skeletons BonyBlack BonyDeath's HeadDank Death's HeadFlesh Death's Head
Ghosts Lil' HauntWizoobRed Ghost
Bats One ToothFat Bat
Fatties FattyFlaming FattyConjoined FattyBlue Conjoined FattyPale Fatty
Hosts HostRed HostWalking HostWalking Red Host
Vises VisDouble VisChubberCage VisScarred Double Vis
Tumors TumorPsy TumorCamillo Jr.
Spikes Wall HuggerSlidePoky
Babies BabyAngelic BabyEmbryoImp
Homunculuses HomunculusBegotten
Keepers KeeperHanger
Grimaces Stone GrimaceVomit GrimaceGaping MawTurret GrimaceBrimstone Grimace
Oobs OobBlack Maw
Others FredLumpB. LickerDukieDopleEvil TwinMeatball

Start a Discussion Discussions about Gaper

  • Gapers

    4 messages
    • He is asking what are they supposed to be. I remember hearing from somewhere (forgot) that every enemy you encounter is a lost brother or sis...
    • I wanna know why these things are in Isaac's basement.

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