Binding of Isaac: Rebirth Wiki
Binding of Isaac: Rebirth Wiki

The Gate is a boss that can appear in:


Like Mega Maw, The Gate is stationary and will perform the following attacks:

  • Spawns a Leaper into the air. It can land anywhere in the room while releasing its projectile attack immediately.
    • There is a maximum of 4 Leapers alive at once.
    • The Gate cannot perform other attacks if there are no Leapers alive. As such, it will also always perform this attack first.
  • Shoots a ring of 9 projectiles that can rotate in either direction while expanding outwards.
  • Shoots two rings of 6 projectiles which expand outwards and rotate in opposite directions.
  • Shoots a ring of 11 straight blood shots in all directions.
  • If there are 2-3 Leapers alive, it charges up and fires a 15►Brimstone Brimstone laser that curves to connect to all leapers that are not off-screen.
    • This kills the Leapers unless they are off-screen.
    • If faced alongside other enemies or bosses such as in Boss Rush the laser connects to them damaging them as well.

Champion Versions Needs to be unlocked[]

  • Added in Afterbirth Black: Has 25% more HP (625) and spawns Big Spiders instead of Leapers. The Big Spiders are tossed directly towards Isaac instead of landing randomly in the room. It does not perform the Brimstone attack.
  • Added in Afterbirth Red: Does not spawn any enemies and has a completely different set of attacks, including:
    • Fires 5 lines of 2-3 slow-moving homing purple shots.
    • Fires 8 lines of 9 blood shots that spiral outwards.
    • Fires 7 lines of 9 blood shots that pulsate outwards.
    • Fires 8 lines of 9 blood shots that move outwards in a zigzag pattern.
    • All the attacks of the Red version do 1 heart of damage.



  • Added in Afterbirth If The Gate is encountered in conjunction with other bosses, which can happen in Greed Mode and Boss Rush, the Brimstone laser will also hit the other bosses and enemies it spawns, damaging and possibly even killing them.
  • Using the Added in Repentance15►Eraser Eraser to remove Leapers causes The Gate to be stuck attempting to spawn them infinitely as it cannot perform other attacks without any Leapers alive.


  • It is the posthumous version of Mega Maw.
    • Despite being a posthumous version of Mega Maw, The Gate physically resembles a giant Host.
  • Upon death, a small Isaac head can be seen poking out of its corpse before it explodes.
    • Two glowing white eyes can be seen in its mouth throughout the fight, which may also be the Isaac head.
  • The Gate is the only enemy that directly targets and kills off other enemies, using its Brimstone Beam against its Leapers and other enemies that happen to spawn alongside it.

Bosses Boss Monstro.png
Chapter 1
Stage Basement icon.pngStage 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
Stage Downpour icon.pngStage Dross icon.png
Lil BlubWormwoodThe RainmakerMin-MinClogColostomiaTurdlet
Chapter 2
Stage Caves icon.pngStage Catacombs icon.pngStage Flooded Caves icon.png
FistulaChubC.H.A.D.Carrion QueenDark OneGurdyGurdy Jr.The HollowThe HuskMega FattyMega MawPeepPestilencePolycephalusThe WretchedThe FallenThe Headless Horseman
The ForsakenThe FrailThe Stain
Big HornRag Mega
Chapter 2.5
Stage Mines icon.pngStage Ashpit icon.png
Reap CreepTuff TwinsHornfelGreat GideonSingeThe ShellThe Pile
Chapter 3
Stage Depths icon.pngStage Necropolis icon.pngStage Dank Depths icon.png
The AdversaryThe BloatThe CageThe GateMonstro IIGishLokiMask of InfamyWarThe FallenThe Headless HorsemanMom
Sisters Vis
Reap CreepThe Pile
Chapter 3.5
Stage Mausoleum icon.pngStage Gehenna icon.png
The SirenThe HereticThe VisageThe Horny BoysMomMom's Heart
Chapter 4
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BlastocystThe BloatConquestDaddy Long LegsTriachnidDeathLokiiMama GurdyMr. FredScolexTeratomaThe FallenThe Headless HorsemanMom's HeartIt Lives
Sisters VisThe Matriarch
Stage Corpse icon.png
ChimeraThe ScourgeRotgutMother
Chapter 5
Stage Sheol icon.pngStage Cathedral icon.png
Chapter 6
Stage Dark Room icon.pngStage Chest icon.png
???The LambMega Satan
The Void
Stage The Void icon.png
Stage Home icon.png
DogmaThe BeastUltra DeathUltra FamineUltra PestilenceUltra War
Greed Mode
Ultra Greed
Ultra Greed
Ultra Greedier
The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth
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