Big Horn

Boss Degraded Boss
Boss
Defeat ??? as 6 different characters

Big Horn is one of the bosses added in The Binding of Isaac: Afterbirth † that can appear in all environments of chapter 2. He is an adult version of Little Horn.

Behavior

Big Horn alternates between attacks from his head and attacks using his arms. His head and arms pop out of holes in the ground. Before attacking with his head, Big Horn will do nothing for a few seconds, allowing Isaac to do damage under no direct pressure.

Head Attacks:

• Spits out a large Dark Ball that homes in on the player, attempting to deal contact damage.
• Spits out two large Dark Balls that bounce against walls and deal contact damage. These do not home.
  • Occasionally does both Dark Ball attacks at the same time.
    • The Dark Balls can hit and damage Big Horn, destroying themselves in the process.
• After attacks where Big Horn opens his mouth, there's a very small window where bombs can be kicked into his mouth. If fed a bomb, Big Horn will take damage, be temporarily stunned, and play a unique animation, during which he will take 20% more damage.
  • This is easiest to do with Dr. Fetus.

Arm Attacks:

• Goes underground, hiding his head, then spawns two or three holes. Each hole will either have an empty hand, a hand holding a bomb or nothing.
  • If a hand holds a bomb, Big Horn will throw it at the player. Possible thrown bombs include 1-3 Troll Bombs, 1 Megatroll Bomb, or 1 Hot Bomb.
    • If Big Horn tosses a bomb into one of the empty holes, the bomb will fall into the hole. Then, Big Horn’s hand will pop out of that hole and toss the same type of bomb.
    • Rarely, Big Horn can throw 4-6 Troll Bombs at once.
  • If a hand is empty, it will follow Isaac and attempt to smack him three times.
  • If the hole is empty, there is an extremely rare chance to spawn a low-health version of Little Horn.

Gallery

• 

  Big Horn ingame.

• 

  Big Horn's hand.

• 

  Big Horn as one of Delirium's Forms.

Notes

• The Hot Bombs are not affected by Safety Scissors.
• If Isaac touches Big Horn's Hot Bombs in chapter 4 and beyond, they will still only deal half a heart of damage instead of a full heart.

Trivia

• Big Horn appears to be an adult version of Little Horn.
• Upon defeat, Big Horn frowns and retreats into his hole. He does not explode into blood upon defeat.
  • Big Horn's hands also have a death animation, which only plays if Big Horn is killed while they're on-screen. The hands briefly shake and retreat into the holes.
• Big Horn had a slight reveal on Twitter by Tyrone Rodriguez, although he wasn't fully revealed.
• During the versus screen, Big Horn will growl despite the battle not starting yet. Big Horn is one of six bosses that can be heard during the versus screen, the other five being The Stain, The Forsaken, Mom, Mom's Heart and It Lives.