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

Entity ID
Table dividing line 2.png
Found In
Stage Mines icon.png
Table dividing line 3.png
Dropped Items
Boss Boss
Added in Repentance

Hornfel is a boss added in The Binding of Isaac: Repentance that can be fought in the Mines Mines. He appears with his own specially designed boss room, where the walls are covered in boss doors, with minecart tracks connecting them.

Behavior[edit | edit source]

Phase 1[edit | edit source]

  • Occasionally, when Hornfel enters the room through a door, he is accompanied by 2 Fly Bombs.
  • Throws 1-2 Bombs at Isaac. Additionally, each bomb has a small chance of having the Hot Bombs or Sad Bombs effect.
  • Throws 3 Brimstone Bombs that resemble mines. Each has a delay and will detonate after a few moments.
  • Moves much quicker, speeding through one set of tracks repeatedly while frequently throwing out bombs for the duration. Slows down after multiple cycles, before getting sick and vomiting a fireball that extends in the cardinal directions upon landing.
  • Sends out 1-2 decoy dummies that burst into multiple Troll Bombs if killed.
  • Other minecarts will occasionally appear, independent of Hornfel, carrying fire, TNT or a variety of other enemies:

Phase 2[edit | edit source]

  • Once Hornfel has taken enough damage, he falls out of his minecart and attempts to escape from the room via one of the doors surrounding the arena. He makes no attempt to attack Isaac but he can still deal contact damage.
    • If Hornfel escapes successfully, the fight ends as normal.
    • If Hornfel is defeated, drops 3 Bomb pickups and unlocks Brimstone Bombs, if not already unlocked.

Gallery[edit | edit source]

Unlockable Achievements[edit | edit source]

  • Brimstone Bombs
    Brimstone Bombs - Kill Hornfel before he can escape after breaking his minecart.

Trivia[edit | edit source]

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
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
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
Stage Corpse icon.png
ChimeraThe ScourgeRotgutMother
Chapter 5
Stage Sheol icon.pngStage Cathedral icon.png
Chapter 6
Stage Dark Room icon.pngStage The 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
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