Isaac RebirthKeeper sprite

The Gurglings (ガーグリングズ Gāguringuzu) are a pair of bosses that can appear as a boss in either the Basement or Caves of The Binding of Isaac: Rebirth. They may also appear on the next floors as a mini-boss.

They may also appear in The Womb later as regular enemies, as evidenced by the lack of a health bar. This version does not spawn any Flies, but fires 6-way bullets.


Gurgling ingame
They appear as a pair of small, bipedal gut-like lumps resembling a smaller version of Gurdy that walk on floors with their arms acting as "legs". Each one possess with a single tooth.


Each of the two entities follow the same pattern; they will wander about the arena while producing trails of red creep, occasionally stopping to either charge toward the player or stop to spawn a fly or two.


  • It appears that the Gurgling will not charge at the player so long as the character is against a wall, however they can charge if the Gurgling are against the wall as well.
  • If Isaac's speed stat is 1, the player cannot outrun the Gurglings.

Champion Variants

In the Afterbirth, the Gurglings receive two champion variants.

More info coming soon.


  • Because of the same "Gur" root as well as appearance, one can assume that the Gurdy Evolutionary Line proceeds as such: Gurgling, Gurdy Jr., Gurdy, Momma Gurdy.


The Binding of Isaac / Rebirth
Regular bosses Original: BlastocystChubDuke of FliesThe FallenFistulaGeminiGurdyLarry Jr.LokiMonstroPeepScolex
(Wrath of the Lamb: Daddy Long LegsGurdy Jr.Mask of InfamyPinWidow)

Rebirth: Dark OneDingleGurglingsThe HauntMama GurdyMega FattyMega MawMr. FredPolycephalus
(Afterbirth: BrownieDangleLittle HornRag ManTurdlings)
(Afterbirth †: Big HornRag Mega)

Posthumous Bosses Original: Monstro II
(Wrath of the Lamb: The Blighted OvumThe BloatCarrion QueenThe HollowThe HuskLokiiTeratomaThe Wretched)

Rebirth: The AdversaryThe CageThe Gate
(Afterbirth: The ForsakenThe FrailThe Stain)

Alternative Bosses Original: C.H.A.D.GishSteven
(Wrath of the Lamb: Triachnid)

Rebirth: Sisters Vis (Afterbirth †)

Harbingers Original: WarFamineDeathPestilenceHeadless Horseman

(Wrath of the Lamb: Conquest)

Final Bosses Original: It LivesMomMom's HeartSatan
(Wrath of the Lamb: ???Isaac)

Rebirth: The LambMega Satan
(Afterbirth: HushUltra Greed)
(Afterbirth †: Delirium)

Seven Deadly Sins EnvyGluttonyGreedLustPrideSlothWrath
Seven Super Deadly Sins Super EnvySuper GluttonySuper GreedSuper LustSuper PrideSuper SlothSuper WrathUltra Pride
Angels / Demons Original: Krampus

Rebirth: GabrielUrielFallen Angels

The Legend of Bum-bo
Regular bosses BygoneDuskGibsGizzardaLoafPeeperPyreSangreShy GalThe Duke
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