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

Added in Afterbirth
Disambig.png This article is about the boss. For the item, see Little Horn (Item).

Little Horn is a boss added in The Binding of Isaac: Afterbirth that can appear in all environments of Chapter 1 (Basement Basement, Cellar Cellar, Burning Basement Burning Basement).


Little Horn constantly tries to evade Isaac by moving away from him while performing the following attacks:

  • Creates and jumps into a Pitfall and pops up elsewhere.
  • Creates 3 to 5 Teleport Pitfalls that move outwards.
  • Creates a regular Pitfall under himself that lasts for several seconds.
  • Throws a Troll Bomb or a Megatroll Bomb into a created Pitfall underneath himself. The bomb then pops up near Isaac's position.
  • Jumps into a Pitfall and appears elsewhere while leaving a Troll Bomb in his place; repeats this process 3-5 times.
  • Spawns a Dark Ball.

Champion Versions Needs to be unlocked[]

  • Added in Afterbirth † Black: Does not attack with Pits, Troll Bombs or Megatroll Bombs, but fires Dark Balls more frequently. This version can still do the chain teleport attack but doesn't spawn any Troll Bombs.
  • Added in Afterbirth † Orange: Spits out an orange Troll Bomb instead of a Dark Ball. This Troll Bomb deals contact damage and leaves a patch of fire similar to 15►Hot Bombs Hot Bombs that cannot damage him. He also throws these special Troll Bombs into Pitfalls instead of normal ones. He loses 1 HP whenever he spits out a bomb. Troll Bombs spawned during the chain teleport attack are normal. Does not attack with Megatroll Bombs.



  • The 15►Gnawed Leaf Gnawed Leaf can make the battle easier, as Little Horn will damage himself with his bombs over time. Isaac can still fall into the pits and be transported around the screen, and will appear to suffer damage, but no actual loss of HP will occur if he is in statue form when he falls in.
  • The Dark Balls that Little Horn spawns can appear in Closets in Caves Caves and Flooded Caves Flooded Caves. They also appear in a room with Little Horn in Chest Chest.
  • If Isaac has the Safety Scissors Safety Scissors, he can acquire maximum bombs from the fight at fairly little risk since the bombs Little Horn spawns will turn into bomb pickups and all his hole attacks are easy to dodge.
  • Little Horn's Dark Ball is considered a monster. Killing it will activate items such as 15►Charm of the Vampire Charm of the Vampire, 15►Infestation 2 Infestation 2, and 15►Jar of Flies Jar of Flies.
  • Occasionally, a Pitfall that Little Horn summons will not vanish after defeating the boss. The Pitfall is still active and can damage Isaac, even if it does not actively chase the player.

Unlockable Achievements[]


  • Little Horn is referred to as male by Edmund.
  • Little Horn is the name of a boss from Super Meat Boy, one of Edmund McMillen's previous games.
  • Little Horn was created due to Edmund's love for Loki's design. (Despite him saying Little Horn is a Caves Boss, he is currently a Chapter 1 boss.)
  • The name "Little Horn" comes from the Book of Daniel, where it refers to the Antichrist.
  • Upon defeat, Little Horn's eyes glow red, then he retreats inside his hole. He does not explode into blood.
  • Little Horn appears to be a baby version of Added in Afterbirth † Big Horn.


Bug Bug! Using 15►Spider Mod Spider Mod will display health bars for the Pitfalls Isaac can fall into.

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
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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
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The AdversaryThe BloatThe CageThe GateMonstro IIGishLokiMask of InfamyWarThe FallenThe Headless HorsemanMom
Sisters Vis
Reap CreepThe Pile
Chapter 3.5
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Chapter 4
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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
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