The Heretic

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The   Heretic
Boss versus screen image
Base HPStage HP
789
0
Table dividing line 1.png
Ingame Appearance
In-game appearance

Entity ID
905.0
Table dividing line 2.png
Found In
Boss
Stage Mausoleum icon.png
Table dividing line 3.png
Dropped Items
Boss Boss
Added in Repentance
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The Heretic is one of the bosses that appears in the Mausoleum Mausoleum. It appears to be an undead variation of The Haunt, and an alternate version of The Forsaken.

Behavior[edit | edit source]

Phase 1[edit | edit source]

  • During the beginning of the fight, the Heretic is summoned by 5 Exorcists which are then turned into Fanatics.
    • The Heretic will be incorporeal until all Fanatics and the Pacers or Gushers they turned into are dead, similiar to The Haunt's first phase.

Phase 2[edit | edit source]

  • Lobs 7 projectiles that, after landing, burst into 6 fires that spread out in a radial pattern. The landing position of each projectile is marked on the ground, and the trajectory the fires spread in is fixed.
    • The Heretic then follows up by launching itself towards Isaac creating a radial burst of 8 flames of fire where it lands. It will spend a short time readjusting its dislocated jaw before continuing to attack.
  • The arena of the Heretic will always spawn a number of unlit Fire Places. The Heretic can light up 5-6 of them before firing a 15►Brimstone Brimstone laser that connects all of the lit fires. The order the Heretic lights each fire indicates what order the laser will follow.
    • These can be extinguished with an explosion and will prevent Brimstone lasers from reaching said Fire Place.
  • Dashes off-screen and turns invisible before charging in again, attempting to bite down on Isaac. It will chain this attack a total of 4 times, each time from alternating sides of the room.
    • The Heretic will occasionally not finish the fourth charge, instead fading away and quickly charging in one final time from the other side of the screen.
  • Upon death, the Heretic's firey eye drops down and sends out lines of fire in the cardinal directions.


Bosses Boss Monstro.png
Chapter 1
Stage The Basement icon.pngStage The 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 The Caves icon.pngStage The 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
Bumbino
Chapter 2.5
Stage Mines icon.pngStage Ashpit icon.png
Reap CreepTuff TwinsHornfelGreat GideonSingeThe ShellThe Pile
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
Reap CreepThe Pile
Chapter 3.5
Stage Mausoleum icon.pngStage Gehenna icon.png
The SirenThe HereticThe VisageThe Horny BoysMomMom's Heart
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
???
???
Hush
Corpse
Stage Corpse icon.png
ChimeraThe ScourgeRotgutMother
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
Home
Stage Home icon.png
DogmaThe BeastUltra DeathUltra FamineUltra PestilenceUltra War
Greed Mode
Ultra Greed
Ultra Greed
Ultra Greedier
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