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The Duke of Flies

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IsaacHDIsaac Rebirth

The Duke of Flies

Dukeofflies full

Boss The Duke of Flies


Official artwork by Edmund McMillen
Statistics
Type
Health
Damage
Boss
110
Half heart
Floor(s)
Basement
Cellar
Rebirth:
The Catacombs (Double Trouble)
Related Bosse(s)
The Husk
Effective Item(s)
Bombs
The Sad Onion
Number One
Cupid's Arrow
Dropped Item(s)
Common Drops
WotL Common Drops

The Duke of Flies (also known as The Duke for short from the artbook) is a boss that can be encountered in the Basement and Cellar.

Description

Original-Duke
He is a large, circular humanoid with "punch-holes" for eyes, light-brown skin covered with multiple warts, and stubby limbs. He sports with a autopsy stitch from his chest. His mouth with crooked teeth-filled jaw is larger enough to be filled with swarm of flies.

From the original game, the Duke's is colored light-brown. However in Rebirth, his color is now periwinkle.

Behavior

The Duke coughs out regular Flies and Attack Flies around him and floats around the screen in random directions, while bouncing off of walls. He takes a large amount of knockback from Isaac's tears.

The Duke coughs out regular flies for defense and will keep doing so if Isaac continue destroying them. These flies will circle around him. If he has too many flies around him, he can blow them away at high speeds, which will cause them to follow Isaac.

Once he has sufficient defensive flies, he will proceed to spawn attack flies instead, which are stronger and poised to attack the player from the start.

Upon death, he spawns a single Pooter and 2 more Attack Flies. In Rebirth, however, no longer does so.

Strategies

Actually getting Isaac's shots through to The Duke of Flies is the most challenging part of this encounter, and that can be accomplished in a few main ways:

  • Firing through the gaps in his shield will make it easier to kill him.
  • A single Bomb will clear out most of the flies, and deal a very large amount of damage to him.
  • The boss gets significantly harder if Isaac can't land his shots right away. The green champion variation is particularly dangerous as shooting down Moters will make it very easy to get hit.
  • When the Duke starts spitting up large Attack Flies, focus on them when they appear to keep things under control.
  • If Isaac get swarmed by the Flies, it is always a good idea to leave the Duke alone and concentrate on his spawns. While this will not damage the Duke in any way, ignoring the flies for too long can lead to so many of them that they become too much to handle.
  • Having Skatole will grant immunity against all flies that are not orbiting the Duke. Attack flies that have been spawned by the Duke but not yet released from his orbit will harm Isaac if he runs into them.

Notes

  • The Duke of Flies has three distinct sounds that he uses before an attack. Learning what these are will help when fighting him.
    • One sound for spawning a large Attack Fly (when he smiles).
    • One sound for spawning 3 Attack Flies (when he swell his cheeks).
    • One sound for releasing some defensive flies to attack Isaac.

Champion Varieties

Orange

Duke of Flies Orange

Larger than the original Duke of Flies. Instead of spawning large Attack Flies, he spawns Suckers.

Green

Duke of Flies Green

Shoots blood in all directions when he coughs, and spawns Moters instead of Attack Flies.

Eternal

Is surrounded by three Eternal Flies. Upon death, he spawns far more Attack Flies and some Fat Flies.

Trivia

  • He appear in the demo for the original game.
  • Page 16

    The Duke of Flies in the Artbook.

    From one of The Duke of Flies' sketches in the artbook, his back view (which shows his visible butt-cheeks) can be seen. It was never displayed in the game, however.
    • The teeth from his upper jaw are going to be visible.
    • His eyes are originally X-shaped rather than looking like punch-holes.
  • The name "the Duke of Flies" is not a reference to Beelzebub, Edmund was unaware of this connection and simply chose the name because it "sounded neat".[1]
  • The protective ring of insects the Duke spits out to surround himself with is referred to as the Halo Of Flies, just like the item Isaac can pick up to protect himself with orbiting flies.
  • The Duke was confirmed to be Edmund McMillen's portrayal of the Pokémon Koffing.[2]
  • Duke of Flies trailer

    The Duke of Flies from the original game's trailer.

    He appear in the original game's first trailer.
  • The stitching below the Duke's mouth appears very similar to an autopsy stitch - a Y-shaped incision that allows access to the cadaver's organs that is then stitched back up when the autopsy is complete.
  • In Rebirth, flies from inside The Duke of Flies' mouth aren't animated at all for some reasons, unlike in the original game.

Sprites

Videos

References


Bosses
Regular Bosses
Blastocyst button

Blastocyst
Brownie
Chub button

Chub
Daddy Long Legs button

Daddy Long Legs
Dangle
Dark One button

Dark One
Dingle button

Dingle
Duke of Flies button

The Duke of Flies
Fallen button

The Fallen
Fistula button

Fistula
Gemini button

Gemini
Gurdy button

Gurdy
Gurdy Jr button

Gurdy Jr.
Gurgling button

Gurglings
Haunt button

The Haunt
Larry Jr button

Larry Jr.
Little Horn
Loki button

Loki
Mama Gurdy button

Mama Gurdy
Mask of Infamy button

Mask of Infamy
Mega Fatty button

Mega Fatty
Mega Maw button

Mega Maw
Monstro button

Monstro
Mr Fred button

Mr. Fred
Peep button

Peep
Pin button

Pin
Polycephalus button

Polycephalus
Rag Man
Scolex button

Scolex
Turdlings
Widow button

Widow
Posthumous Bosses
Adversary button

The Adversary
Blighted Ovum button

The Blighted Ovum
Bloat button

The Bloat
Cage button

The Cage
Carrion Queen button

Carrion Queen
The Forsaken
The Frail
Gate button

The Gate
Hollow button

The Hollow
Husk button

The Husk
Lokii button

Lokii
Monstro II button

Monstro II
Teratoma button

Teratoma
The Stain
Wretched button

The Wretched
Alternative Bosses
CHAD button

C.H.A.D.
Gish button

Gish
Sister Vis button

Sisters Vis
Steven button

Steven
Triachnid button

Triachnid
Harbingers
Conquest button

Conquest
Death button

Death
Famine button

Famine
Headless Horseman button

Headless Horseman
Pestilence button

Pestilence
War button

War
Final Bosses
XXX button

???
Hush
Isaac button

Isaac
It Lives button

It Lives
Lamb button

The Lamb
Mega Satan button

Mega Satan
Mom button

Mom
Mom's Heart button

Mom's Heart
Satan button

Satan
Ultra Greed
Minibosses
Seven Deadly Sins
Envy button

Envy
Gluttony button

Gluttony
Greed button

Greed
Lust button

Lust
Pride button

Pride
Sloth button

Sloth
Wrath button

Wrath
Seven Super Deadly Sins
Envy button

Super Envy
Super Gluttony button

Super Gluttony
Super Greed button

Super Greed
Super Lust button

Super Lust
Super Pride button

Super Pride
Super Sloth button

Super Sloth
Super Wrath button

Super Wrath
Ultra Pride button

Ultra Pride
Angels / Demons
Krampus button

Krampus
Angel button

Gabriel
Angel button

Uriel
Angel button

Fallen Angels
LEGENDS: The Binding of Isaac bosses are yellow. Wrath of the Lamb bosses are teal. Rebirth bosses are orange. Afterbirth bosses are crimson. Afterbirth † bosses are violet.

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