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

Mega Maw is a boss that can appear in:


Mega Maw is stationary and will perform the following attacks:

  • Fires red projectiles at Isaac in disorganized bursts, similar to Monstro.
  • Releases 2 rings of 5 flames which expand outwards and rotate in opposite directions.
  • Releases one large ring of 9 flames that expands outwards.
  • Releases one large ring of 9 flames that can rotate in either direction while expanding outwards.
  • Gradually spits out a Hopper directly below it.

Champion Versions Needs to be unlocked[]

  • Added in Afterbirth Black: Spits 1-2 Spiders instead of Hoppers. The Spiders will be tossed directly towards Isaac instead of landing below Mega Maw. It does not use flame attacks.
  • Added in Afterbirth Red: Doesn't shoot any flames or spawn monsters and has a completely different set of blood-shot attacks:
    • Fires a ring of 9 blood shots that spiral outward.
    • Fires 4 lines of 4 curving blood shots.
    • Fires 4 lines of 7 waving blood shots.
    • Fires 10 lines of 4 blood shots in all directions.
    • All the attacks of the Red version do 1 heart of damage.



  • It is the boss version of the Maws.
  • The Gate is the posthumous version of it.
  • Before its fire attack, a purple flame can be seen emanating from its forehead.
  • Despite its name, it acts and looks more like a Horf (or a Psychic Horf) than a Maw, because it does not move and its eyes are more round.
  • Its fire attack could be a reference to Mega Man's leaf shield/attack.

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
Stage Womb icon.pngStage Utero icon.pngStage Scarred Womb icon.png
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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