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Mega Fatty

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Boss Mega Fatty name.png
Boss versus screen image
 
 
Table dividing line 1.png
 
In-game appearance
Table dividing line 2.png
 
Boss
Stage The Caves icon.png
Boss Challenge Room Icon.pngSuper Secret Room Icon.png
Double Trouble
Added in Afterbirth
Stage The Caves icon.pngStage The Catacombs icon.pngStage Flooded Caves icon.png
(With Pin)
Stage The Depths icon.pngStage Necropolis icon.pngStage Dank 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.pngStage Cathedral icon.png
Stage Dark Room icon.pngStage The Chest icon.png
Table dividing line 3.png
 
Boss Boss

Mega Fatty is a boss that appears in The Caves The Caves. He is the boss version of the Fatties.

Behavior[edit | edit source]

Mega Fatty has 5 attacks in total:

  • He will jump off-screen and land in the player's position, leaving Red Creep when he lands.
  • He will briefly slide towards the player and perform a short-range jump, also leaving Red Creep when he lands.
  • He will inhale and draw the player, objects, and any monsters towards him, and then vomit upwards, unleashing a barrage of projectiles in the player's direction. The vomit itself is harmless, but the projectiles it produces will seek until they land, rather than until he stops spawning them, so the player should keep moving.
  • He will occasionally fart, which can damage Isaac if he's too close, and will either:
    • Summon 1-3 Dips.
    • Unleash a cluster of projectiles behind him, similar to Monstro.

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

  • Added in Afterbirth Brown: Has 15% more HP (690). He never uses his vomit attack and sends out rock waves instead of leaving Red Creep upon landing when performing the long-range jump, similar to The Cage.
  • Added in Afterbirth Red: 33% smaller and has 10% less HP (540). Shoots 6 bullets instead of leaving Red Creep upon landing. Poops Red Poop instead of Dips. Vomit attack moves outward in a pattern similar to Mom's Heart/It Lives' four slower bullet stream attacks.

Gallery[edit | edit source]

Tips[edit | edit source]

  • When Mega Fatty is shooting out his barrage of projectiles, it is very easy to see the shadows of the projectiles, allowing you to determine when it is safe to stop moving.
  • The Lost Contact Lost Contact will still block all incoming projectiles from his barrage even if they happen to go high enough to be offscreen.

Trivia[edit | edit source]

  • The Cage is the posthumous version of Mega Fatty.
  • Mega Fatty has the highest health of any boss fought in Chapter 2.
  • The picture of Mega Fatty on Isaac's last will closely resembles the unused variant.



Bosses Boss Monstro.png
Chapter 1
Stage The Basement icon.pngStage The Cellar icon.pngStage Burning Basement icon.png
GeminiStevenBlighted OvumDingleThe Duke of FliesFamineFistulaGurglingsThe HauntLarry Jr.MonstroPinWidowThe FallenThe Headless Horseman
DangleLittle HornRag ManTurdlings
Chapter 2
Stage The Caves icon.pngStage The Catacombs icon.pngStage Flooded Caves icon.png
ChubC.H.A.D.Carrion QueenDark OneGurdyGurdy Jr.The HollowThe HuskMega FattyMega MawPeepPestilencePolycephalusThe WretchedThe FallenThe Headless Horseman
The ForsakenThe FrailThe Stain
Big HornRag Mega
Chapter 3
Stage The Depths icon.pngStage Necropolis icon.pngStage Dank Depths icon.png
The AdversaryThe BloatThe CageThe GateMonstro IIGishLokiMask of InfamyWarThe FallenThe Headless HorsemanMom
Brownie
Sisters Vis
Chapter 4
Stage The 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
Blue Womb
???
Hush
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
Greed Mode
Ultra Greed
Ultra Greed
Ultra Greedier
The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth
Achievements Achievements Attributes Attributes Bosses Bosses TarotCard.png Cards and Runes Challenges Challenges Chapters Chapters
Characters Characters MainPageBabies.png Co-op Items Items Item pools Item pools Monsters Monsters Objects Objects
Pickups Pickups Pills Pills Rooms Rooms Seeds Seeds Transformations Transformations Trinkets Trinkets