Horfs
Horfs are common enemies encountered in the early chapters. They are stationary heads which typically attack from a distance by spitting projectiles.
This page is about Horfs added by Fiend Folio. More information about Horfs in general can be found in the vanilla page.
Red Horf
Red Horfs remain stationary, and unlike regular Horfs, will not attack directly. They start off fully swollen before calming down; if Isaac then draws close, they begin shaking more intensely and start to swell again. They will progress through 3 stages of swelling as long as Isaac is within their vicinity, and eventually, explode into projectiles after the last stage.
The pattern of projectiles fired upon death depends on the stage of swelling they reached: 4 projectiles in the ordinal directions, 8 projectiles in a ring, and on the final stage, the speed of the 8 projectiles is increased. Red Horfs will slowly calm down if Isaac moves away.
Mutant Horf
Mutant Horfs, upon spawning, fire off 2 projectiles that orbit themselves counterclockwise in a wobbly circle. These projectiles will remain in orbit until the Mutant Horf dies. If a projectile is destroyed, it will fire out another to replace it.
Shirk
Shirks are stationary ghosts that periodically shoot spectral projectiles towards Isaac when he is within range, being able to target and shoot at him through obstacles. If Shirks take damage or if Isaac gets too close, they will disappear and reappear in another spot in the room shortly afterwards. They will have a cooldown after teleporting before being able to do so again.
Notes
- The locations Shirks will teleport to are determined by the room layout and are not random.
Mr. Flare
Mr. Flares release 3-7 short-range flames in random directions when Isaac enters their range, which linger on the ground for a short duration.
Notes
- If hit by the explosion of a
Water TNT, they will be extinguished and afterwards only shoot out 1-3 flames with even shorter range and duration.
Mr. Crisply
Mr. Crisplies resemble Mr. Flare, but have noticeably different behavior. It does not attack and remains stationary but takes increased knock-back, and upon death, it releases a cluster of short-range fires. These fires last for a long time but can be extinguished. Its health will deplete on its own over time, similar to 
Crispies, and as it does so, its appearance will become more and more charred.
Floaty
Floaties are a fusion between 
Bloaties and 
Sub Horfs. When damaged, they will receive increased knock-back that sends them spinning around the room. Whenever they face an ordinal direction while traveling fast enough, they will spew out a short line of green creep and a few arcing projectiles in that direction.
Mini-Min
Mini-Mins are Horfs that resemble 
Min-Min. They are largely stationary, firing projectiles at Isaac whenever he draws near. If Isaac is not within its line of sight, it will submerge and re-emerge closer to Isaac. On death, its outer husk will peel away and spawn a 
Level 2 Willo.
Shitty Horf
Shitty Horfs are variants of Red Horfs that can be found in Dross. Similarly to Red Horfs, they have 3 stages that they will build up towards when Isaac is nearby that changes their projectile pattern on death. The number of projectiles and shot speed are the same as Red Horfs; however, the projectiles will rotate either clockwise or counter-clockwise as they travel.
Spitum
Spitums appear predominantly in the Catacombs and attack less frequently than other Horfs. When Isaac is in range, they will sneeze out a cluster of medium-range projectiles which leave puddles of green creep where they land.
Blare
Blares appear as pale grounded versions of regular Horfs and behave similarly, periodically firing singular blood projectiles towards Isaac if he's in sight. However, if it takes enough damage or if enough time passes, they will transform into their true appearance and begin relentlessly chasing Isaac, occasionally firing 2 blood projectiles in a spread towards him.
Pale Horf
Pale Horfs are upgraded versions of Horfs. They behave identically, firing projectiles when Isaac is within their line of sight, but fire them at a far faster rate. They have an infinite detection range and will shoot as long as Isaac is in line of sight; however, their projectile range is still identical to regular Horfs.
Notes
- In rooms with
Magnifiers, Pale Horfs will transform into Pale Mag Horfs that behave identically to their regular counterpart.
Glorf
Glorfs are 
Globin-esque variant of Horfs. They fire 3 projectiles in a row towards Isaac, with each subsequent projectile being slightly larger and slightly faster. On death, their leftovers start floating diagonally around the room. After a while, they will regenerate back into their original form unless killed in this goo form.
The amount of health they regenerate with depends on how much damage is taken in its goo form, though it will not exceed 50% of its original health.
Mag Horf
Mag Horfs are a tainted variant of Horfs found during the 
Ascent. Mag Horfs constantly fire large blood projectiles towards Isaac at a much faster rate than their counterparts; these projectiles then split into 4 smaller projectiles in a cross shape on impact. One of these projectiles will always be aimed towards Isaac. They have an infinite detection range and will shoot as long as Isaac is in line of sight; the split projectiles extend their full effective range.
Notes
- Their large projectiles deal a whole Heart of damage, which is usually unnoticeable outside of being encountered as magnified Pale Horfs.
Trivia
- Mutant Horfs originally resembled
Craterface with its face-like tumor. - Mutant Horf was initially named Moron. Their animation file name is also still called Moron.
- Mutant Horfs were unused in the initial AB+ release of the mod.
- Mr. Flares and Mr. Crisplys use the original Horf sound effect from the original Binding of Isaac when attacking.
- Glorfs were originally a part of the cancelled Morbus floor MOD, and was ported as a part of the Reheated update.
- Glorf was the only enemy in the original Morbus mod that was not coded by Xalum, instead being implemented by Fiend Folio founder Minichibis.
- Glorfs can be seen as an inverse of Globins, being stationary while "alive" and mobile in their goo form
- Mag Horfs are a reference to Mag Agents from Madness Combat, which are bigger and stronger versions of Agents.
- Blares were added in the V2.5 update.
- Pale Horfs and Mag Horfs were added in the V2.8 update.
- Shirks and Spittums have unique appearances when encountered on the Glacier floor if the Revelations MOD is installed.
Gallery
Stages of a Red Horf's inflation.
Mutant Horf's appearance in Downpour.
A Mr. Flare's appearance after it has been extinguished by a Water Barrel.
A Mr. Crisply's appearance as it's about to burst into flames.
Stages of a Shitty Horf's inflation.
Spitum's appearance in Dross.
True form of a Blare.
A Pale Horf transformed into a Pale Mag Horf.
A Glorf in its goo form.
Shirk's appearance in Glacier in the Revelations MOD.
Spitum's appearance in Glacier in the Revelations MOD.
Early version of Red Horf made by Minichibis.
Original Mutant Horf sprite.
Old version of Mini-Min.
Old version of Blare.
Concept art for Shirk.
Concept art for Blare.
More concept art for Blare.
