Boom Fly

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Boom   Fly
Entity image

Base HPStage HP
20
0
Table dividing line 1.png
Entity ID
25.0
Table dividing line 2.png
Found In
Stage The Caves icon.pngStage The Catacombs icon.pngStage Flooded Caves icon.png
Stage The Depths icon.pngStage Necropolis icon.pngStage Dank Depths icon.png
Challenge Room Icon.png

Boom Flies roam around the room diagonally, dealing touch damage and exploding with a large blast radius upon death. 15►Skatole Skatole slows them down, but they remain dangerous.

Variants[edit | edit source]

Red Boom Fly[edit | edit source]

Red   Boom   Fly
Entity image

Base HPStage HP
20
0
Table dividing line 1.png
Entity ID
25.1
Table dividing line 2.png
Found In
Stage The Caves icon.pngStage The Catacombs icon.pngStage Flooded Caves icon.png
Stage The Depths icon.pngStage Necropolis icon.pngStage Dank Depths icon.png
Stage The Womb icon.pngStage Utero icon.pngStage Scarred Womb icon.png
Stage Cathedral icon.png
Challenge Room Icon.png
Chance to replace Boom Flies

Red Boom Flies roam around the room diagonally, dealing touch damage and releasing 6 blood shots in all directions upon death. 15►Skatole Skatole will only slow down their movement.

Drowned Boom Fly[edit | edit source]

Drowned   Boom   Fly
Entity image

Base HPStage HP
20
0
Table dividing line 1.png
Entity ID
25.2
Table dividing line 2.png
Found In
Stage Flooded Caves icon.png
Challenge Room Icon.png
Chance to replace Boom Flies and Red Boom Flies in the Flooded Caves
Added in Afterbirth

Drowned Boom Flies fly around the room diagonally, dealing contact damage. Upon death, they explode and release 4 blood shots in the cardinal directions, occasionally spawning a Drowned Charger.

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

Dragon Fly[edit | edit source]

Dragon   Fly
Entity image

Base HPStage HP
20
0
Table dividing line 1.png
Entity ID
25.3.0
Table dividing line 2.png
Found In
Stage Mines icon.pngStage Ashpit icon.png
Added in Repentance

Dragon Flies fly around the room diagonally, dealing contact damage. Upon death, they spawn 4 lines of fire in the cardinal directions.

Dragon Fly X[edit | edit source]

Dragon   Fly   X
Entity image

Base HPStage HP
20
0
Table dividing line 1.png
Entity ID
25.3.1
Table dividing line 2.png
Found In
Stage Mines icon.pngStage Ashpit icon.png
Added in Repentance

Dragon Fly X is identical to the Dragon Fly in behavior, but upon death it spawns the 4 lines of fire in a diagonal pattern.

Bone Fly[edit | edit source]

Bone   Fly
Entity image

Base HPStage HP
20
0
Table dividing line 1.png
Entity ID
25.4
Table dividing line 2.png
Found In
Stage Ashpit icon.png
Challenge Room Icon.png
Added in Repentance

Bone Flies fly around the room diagonally, dealing contact damage and occasionally firing one bone at Isaac. Upon death, they shoot 3 evenly spaced bones (one of them aligned towards the closest cardinal direction to Isaac).

Sick Boom Fly[edit | edit source]

Sick   Boom   Fly
Entity image

Base HPStage HP
20
0
Table dividing line 1.png
Entity ID
25.5
Table dividing line 2.png
Found In
Stage Corpse icon.png
Added in Repentance

Sick Boom Flies fly around the room diagonally dealing contact damage and trailing poisonous gas. Upon death they explode into a cloud of gas and release 6 green shots in all directions.

Tainted Boom Fly[edit | edit source]

Tainted   Boom   Fly
Entity image

Base HPStage HP
20
0
Table dividing line 1.png
Entity ID
25.6
Table dividing line 2.png
Found In
Stage The Basement icon.png
Found on the Ascent to Home Home.
Added in Repentance

Tainted Boom Flies are much tankier and stronger versions of Boom Flies. They fly around the room diagonally, dealing contact damage. Upon death, they send explosions in a cross-shaped marker across the room.

They are exclusive to the Ascent to Home Home.


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