The Binding of Isaac: Antibirth Wiki
The Binding of Isaac: Antibirth Wiki

Flies are very common enemies, found on almost every floor. They can also be spawned by various monsters and bosses, including Duke of Flies, The Husk, Hives, Swarmers, Gurdy, and Pestilence. Skatole changes the behavior of all types of flies. The Lord of The Flies transformation converts some types of flies into Blue Flies.

Black Fly[]

Black Fly
Fly.png
Base HP
3
Stage HP
0
Found In
The Basement
The Cellar
Burning Basement
The Womb
Utero
Scarred Womb

Black flies buzz around the room randomly, often moving away from the player. They cannot damage Isaac at all, even by touch, making them completely harmless. However, they can turn into Pooters if they fly around Poop for too long or come in contact with a golden poop.

Mama Fly[]

Mama Fly
File:Afterbirth† Indicator.png
Mama Fly.png
Base HP
Stage HP
Found In
Corpse

Mama Flies behave like Black Flies movement-wise, but spawn Pustules on the ground. Upon death, it releases Small Maggots.

Attack Fly[]

Attack Fly
Attack Fly.gif
Base HP
5
Stage HP
0
Found In
The Basement
Cellar
Burning Basement
The Caves
Catacombs
Flooded Caves
The Depths
Necropolis

Attack Flies are red and black flashing flies that will follow Isaac relentlessly until killed. Their only way of damaging Isaac is by contact, and they move rather slowly, making them easy to kill. However, they can be dangerous when found in groups, as they can swarm around Isaac quickly.

Attack Flies turn into regular Black Flies if Isaac has Skatole. They take a small amount of time to convert into Black Flies, so it is possible for Isaac to be damaged if the player is not careful.

Large Attack Fly[]

Large Attack Fly
Attack Fly.gif
Base HP
10
Stage HP
0
Found In
Spawned by The Duke of Flies

These have the exact same behavior as regular attack flies, and move at the same speed. However, they are larger and have more health than regular Attack Flies.

Dart Fly[]

Dart Fly
File:DLC Indicator.png
Dart Fly.png
Base HP
5
Stage HP
0
Found In
The Basement
The Cellar
Burning Basement

Dart Flies are similar to regular attack flies, but attempt to mimic Isaac's movements. Their only way of damaging Isaac is by contact, and they can move fairly quickly, making them potentially dangerous when found in groups.

Swarm Fly[]

Swarm Fly
File:DLC Indicator.png
Swarm Fly.gif
Base HP
5
Stage HP
0
Found In
The Basement
The Cellar
Burning Basement

Swarm Flies are similar to regular attack flies, but appear in tightly-packed clusters. Their only way of damaging Isaac is by contact, and although they move fairly slowly, they can be dangerous by simply outnumbering Isaac.

Hush Fly[]

Hush Fly
File:DLC Indicator.png
Hush Fly.png
Base HP
10
Stage HP
0
Found In
Blue Womb

Hush Flies are spawned by Hush and behave somewhat similarly to Ring Flies, flying as towards Isaac in certain patterns. Unlike Ring Flies, they can form other shapes such as polygons and can also orbit Hush.

Hush Flies have a brief period of invincibility when Hush spawns them, making them appear to have more health than they actually have.

Hush Flies are not affected by the Beelzebub Transformation.

Moter[]

Moter
Moter.png
Base HP
10
Stage HP
0
Found In
The Basement
Cellar
Burning Basement
The Caves
Catacombs
The Depths
Necropolis
Dank Depths

Moters appear as two Attack Flies joined together. They behave similarly to regular Attack Flies, but split into two Attack Flies upon being killed. Their split is very wide and unpredictable and can easily shave off half a heart. It is recommended to kill faster flies and other small monsters before it as the two flies it spawns are actually more dangerous in many ways. Running between them just as they split is also a very good way to dodge.

  • If Isaac has Skatole, or uses a bomb, killing a Moter will not make them split into two Attack Flies.

Eternal Fly[]

Eternal Fly
Eternal Fly.png
Base HP
Invincible
Stage HP
N/A
Found In
All Chapters

The Eternal Fly is a white Fly that can be found on any floor in the game. They usually circle Corn Poop or enemies like Holy Leeches and the Hanger and will not stop circling them until their hosts are destroyed. Before that, they will deal damage to Isaac if he touches them and are completely immune to all forms of damage. When their hosts are destroyed, they convert into Attack Flies.

  • If Eternal Flies are circling Corn Poop and there are no other enemies around, you can leave the room at will. This is true even if they have already been converted into large attack flies: they will simply disappear when you return into the room.

Ring Fly[]

Ring Fly
Ring Fly.gif
Base HP
5
Stage HP
0
Found In
The Basement
The Cellar
Burning Basement
The Caves
Catacombs
Flooded Caves
The Depths (rare)

Ring Flies are a new addition to Rebirth. They are pink flies that, upon entering the room, will cluster together into a circular formation and orbit rapidly while moving towards Isaac. They will hold formation even when you destroy all but one fly. The maximum amount of flies per formation is 10. These flies are fast and take up a large amount of space, so it may be recommended to hold these on higher danger priority.

  • Ring Flies are not affected by Strange Attractor and will continue to stay within their current circular formation.

Willo[]

Willo
File:Afterbirth† Indicator.png
Willo.png
Base HP
Stage HP
Found In
Downpour

Willoes are a type of fly, that will form into a circle that orbits Isaac. They will orbit Isaac until killed, and will shoot orange shots at the player occasionally, signaled by them sparking up a bit. These are also spawned by Mullighouls.

Fly Bomb[]

Fly Bomb
File:Afterbirth† Indicator.png
Fly Bomb.png
Base HP
Stage HP
Found In
Mines

Fly Bombs fly erratically towards Isaac, and are fairly fast. When killed, they will turn into a miniature bomb, that explodes after a short delay. This miniature bomb behaves like a regular bomb, damaging Isaac and monsters. These can be spawned by Blasters.

Boom Fly[]

Boom Fly
Boom Fly.png
Base HP
20
Stage HP
0
Found In
The Caves
The Catacombs
Flooded Caves
The Depths
Necropolis
Greed Mode Sheol

Boom Flies roam around the room diagonally, dealing touch damage and exploding with a large blast radius upon death. Skatole slows them down, but they remain dangerous. They also spawn from blue champion bosses such as Teratoma and Fistula.

Red Boom Fly[]

Red Boom Fly
Red Boom Fly.png
Base HP
20
Stage HP
0
Found In
The Caves
The Catacombs
Flooded Caves
The Depths
Necropolis
The Womb
Utero
Scarred Womb

Flies around the room diagonally, dealing touch damage and exploding into 6 directional blood shots upon death. Skatole will only slow down their movement.

Drowned Boom Fly[]

Drowned Boom Fly
File:DLC Indicator.png
Drowned Boom Fly.png
Base HP
20
Stage HP
0
Found In
Flooded Caves
Greed ModeThe Caves

Drowned Boom Flies fly around the room diagonally, dealing contact damage. Upon death, they explode, release 4 blood shots in the cardinal directions, and spawn a Drowned Charger. Occasionally the Drowned Charger will not spawn, and only blood shots will be fired.

If a Drowned Boom Fly dies while over an obstacle or pit, the Drowned Charger will not be spawned.

Dragonfly[]

Dragonfly
File:Afterbirth† Indicator.png
Dragonfly.png
Base HP
Stage HP
Found In
Mines

Dragonflies are a type of fly that fly in a pattern similar to Boom Flies. However, when killed, instead of exploding, it will release a stream of fire in either the cardinal or diagonal directions, depending on whether their eyes are opened or closed respectively.

Sick Boom Fly[]

Sick Boom Fly
File:Afterbirth† Indicator.png
Sick Boom Fly.png
Base HP
Stage HP
Found In
Corpse

Sick Boom Flies fly in a pattern similar to Boom Flies. However, when killed, it will spawn a large cloud of poison that will hurt Isaac if he touches it.

Level 2 Fly[]

Level 2 Fly
Level 2 Fly.png
Base HP
10
Stage HP
0
Found In
The Basement
The Cellar
Burning Basement

The Level 2 Fly flies towards Isaac somewhat erratically, dealing contact damage.

Full Fly[]

Full Fly
Full Fly.png
Base HP
10
Stage HP
0
Found In
The Basement
The Cellar
Burning Basement
The Caves
The Catacombs
Flooded Caves

The Full Fly behaves similarly to the Level 2 Fly and Red Boom Fly combined, it chases Isaac and explodes into 6 blood shots upon death.

Pooter[]

Pooter
Pooter.png
Base HP
8
Stage HP
0
Found In
The Basement
The Cellar
Burning Basement
The Caves
The Catacombs
Flooded Caves
The Depths
Necropolis
Dank Depths

The Pooter very slowly wanders around the room to the point where they basically stay put. They shoot one bullet at Isaac. Pooters will not shoot if Isaac wears Skatole.

Fat Fly[]

Fat Fly
Super Pooter.png
Base HP
8
Stage HP
0
Found In
The Basement
The Cellar
Burning Basement
The Caves
The Catacombs
Flooded Caves
The Depths
Necropolis
Dank Depths

The Fat Fly behaves like the Pooter, except it shoots two bullets in a V-shaped pattern. Also does not shoot Isaac with Skatole.

Sucker[]

Sucker
Sucker.png
Base HP
10
Stage HP
0
Found In
The Basement
The Cellar
Burning Basement
The Caves
Catacombs
Flooded Caves
The Depths
Necropolis
Dank Depths
The Womb
Utero
Scarred Womb
The Cathedral
Sheol

The Sucker has a greater amount of health than a regular fly, and slowly moves towards Isaac. Upon death it shoots 4 bullets in all cardinal directions. Suckers are unaffected by Skatole, so they're always hostile.

Despite their simplistic behaviour, Suckers can actually prove rather dangerous in late levels. This is because often times they'll be positioned in areas containing hazards or the player may have familiars that attack the Suckers regardless of the player's intention. As a result, the low health that the Suckers possess can be used to give the player little time to react when they die quickly and shoot their projectiles outwards.

Spit[]

Spit
Spit.png
Base HP
10
Stage HP
0
Found In
The Basement
The Cellar
Burning Basement
The Depths
Necropolis
Dank Depths
The Womb
Utero
Scarred Womb
The Cathedral
Sheol

The Spit looks like a green version of the Sucker, and it shoots one explosive green bullet at the player upon death. The shot behaves exactly like Ipecac. Spits are unaffected by Skatole, so they're always hostile. Like most enemies that possess explosive attacks, Spits can be used to bomb Tinted Rocks or open Secret Rooms.

Ink[]

Ink
File:Afterbirth† Indicator.png
Ink.png
Base HP
Stage HP
Found In
The Caves
Catacombs
The Depths
Necropolis
Mines
Not completely sure, testing needed!

Inks are a type of Sucker, that behaves almost identically to a normal Sucker. However, upon death, it will release 4 black ink shots in the diagonal directions, and leave a puddle of black creep.

Gallery[]

Bugs[]

Bug Bug! If the host of an Eternal Fly is destroyed while it is frozen due to the use of items such as Mom's Bra, the Eternal Fly will simply sit in the same spot without doing anything, being pushed by any tears shot at it. Similarly, if a host of an Eternal Fly is caught with the File:DLC Indicator.png Friendly Ball, the Eternal Fly will stay in place until leaving the room, being despawned. Releasing the captured enemy with the Friendly Ball will not respawn the Eternal Fly.
Bug Bug! File:DLC Indicator.pngIf Isaac petrifies Swarm Flies with Mom's Contacts, the petrified flies will quickly dash to the swarm upon being unfrozen.


Sacdag.png Antibirth Sacdag.png

Boss Baby Plum.png Bosses MainPageChallenges.png Challenges MainPageChapters.png Chapters Character.png Characters Book of Virtues.png Items
Dumpling.png Monsters Bucket.png Objects Immortal Heart.png Pickups Blessed Penny Icon.png Trinkets MainPageAchievements.png Unlockables