Horfs are disembodied human heads with their eyes gouged out. Horfs remain immobile in one spot, firing blood shots at Isaac when he gets in their range. They will fire shots directly at Isaac when they're about 1/2 room width away from them, even though their shots can travel the entire room's length. This makes it possible to outrange the Horfs in almost all encounters with them; even if you're in range, they have a slow rate of fire and their shots are slow-traveling as well, and can be dodged simply by moving slightly to the side.
Horfs have a small chance to be replaced by Sub Horfs.
Variations[ | ]
Psychic Horf[ | ]
Psychic Horfs behave similar to Horfs, but they shoot homing shots instead of blood shots. Unlike a 
Psychic Maw, it does not possess an 
Eternal Fly.
Sub Horf[ | ]
Sub Horfs are a variant of Horfs found in 
Downpour and rarely replace Horfs in other floors. Sub Horfs look like Horfs but tinted blue.
Sub Horfs will only shoot if hit first. If they are shot at, they will rotate and periodically shoot in the direction they are facing while rotating. They will also shoot upon receiving any knockback. They release 1 water shot upon death. Despite appearing to float, Sub Horfs can be pushed by the water streams in 
Dross.
Necro[ | ]
Necroes are a variant of Horfs resembling ghostly 
Bonies. They will summon bones in a radius around them, sending them at Isaac. They can target Isaac from anywhere in the room.
Tainted Sub Horf[ | ]
Tainted Sub Horfs are a stronger version of the Sub Horf that behave like a Sub Horf, but fire much faster, have bigger projectiles and slowly move towards Isaac while facing him.
Level 2 Horf[ | ]
Level 2 Horfs are a variant of Horfs found in 
Corpse. They look like Horfs in a decaying state.
Level 2 Horfs act quite similarly to regular Horfs, however they spit 
Small Maggots at Isaac instead of blood shots. Although they appear to float, they cannot get past gaps in the floor and are affected by creep.
Gallery[ | ]
- A Sub Horf's appearance in Dross.
A Horf on Isaac's Last Will.
Trivia[ | ]
- Maws and Psychic Maws appear to be the posthumous versions of Horfs and Psychic Horfs, as their attacks and appearance are similar.
- Even though Horfs look like they are flying, they are considered grounded
- But do fly in Crawl Spaces and can be hit down.
- Sub Horfs appeared in the Antibirth mod where they would only fire upon receiving any knockback.
- Sub Horfs spawned outside of Downpour will have the same coloration as a normal Horf.
- Their bullets are also colored the same as normal horf bullets.
Bugs[ | ]
 Bug!
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If a Horf or Psychic Horf is stunned, feared, or frozen at the same time that it tries to shoot Isaac after the effect wears off, its shot will be fired without its corresponding animation. |
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 The Binding of Isaac: Rebirth
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