The Horny Boys

The Horny Boys are a boss added in The Binding of Isaac: Repentance that can appear in Gehenna.

Behavior

Floats randomly around the room and cycles between the following attacks in the following order:

Summons a Boom Fly orbited by 3 pink Eternal Fly Bombs.
Juggles 3 bombs then throws them toward Isaac. Each bomb has a chance of having the Hot Bombs or Sad Bombs effect.
Chains together numerous consecutive tear patterns while gradually increasing the rate in which they are fired:
- 4 cardinal projectiles.
- 4 diagonal projectiles.
- 4 cardinal projectiles.
- 8 projectiles in all directions.
- 12 projectiles in all directions.
- 8 clusters in all directions, each contains 3 projectiles.
- 10 projectiles in all directions, rotating counterclockwise.
- 10 projectiles in all directions, rotating clockwise.
- 4 diagonal projectiles.
- 4 cardinal spreads, each contains 3 projectiles.
- 4 diagonal spreads, each contains 3 projectiles.
- 8 projectiles in all directions.
- 4 diagonal spreads, each contains 5 projectiles.
- 10 projectiles in all directions.
- 8 projectiles in all directions.
- 12 projectiles in all directions.
- 12 projectiles in all directions.
- 4 cardinal projectiles.
- 4 diagonal projectiles.
- This attack ends with Hornfel getting sick and vomiting out 3 fireballs that each extend in cardinal directions upon landing.
Teleports 3 times and throws out a short delay Brimstone Bombs Bomb each time.

OR

Throws a Sad Bombs Bomb at their feet to create a smokescreen before rapidly teleporting to another location. This attack is repeated 5 times.

They appear to be a conjoining of Hornfel and Loki.
- Furthering this concept is that they appear to share attacks from both bosses.
- Additionally, using Meat Cleaver against them splits them into their individual entities.
  - Hornfel as a result, is in his 2nd phase, where he cries and attempts to retreat from Isaac, similar to when Isaac breaks his minecart as a Mines boss. He is unable to leave the boss room and may even step onto the spikes present in one of the boss arenas.
  - Hornfel will only drop bomb pickups/items if Loki was killed first.
- Their name in the boss VS screen also shows a bomb and a mark, representing both bosses.
In the Bestiary, they are referred to as "Horny Boys".
According to Edmund, Hornfel and Loki are brothers.^[1]
Their name may refer to the term used for being sexually aroused, being "horny".
They are called "Horni Bois" in the game files.