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Boil

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IsaacHDIsaac Rebirth

Boils are spherical monsters appearing in both The Binding of Isaac and the Rebirth remake. They can be encountered in The Caves/Catacombs and The Depths/Necropolis.

Behavior

They start off as a small red sphere and slowly grow to full size. When at their full size, they can spurt out short-ranged blood shots at Isaac, similar to one of Monstro's attacks. Boils decrease in size when hit, but will regenerate to their full size until fully destroyed.

Boils are nearly harmless on their own, as they can simply be killed from a distance and do not deal damage on contact. With other enemies, however, they are far more dangerous: If Isaac enters a room with a large crowd of enemies and several Boils providing covering fire, taking out enough of the Boils to give himself breathing room should be a big priority.

Notes

  • They can be spawned by Gurdy, the green alternate Chub, and the pink alternate Widow.
Monsters
Insects
Black FlyAttack FlyMoterEternal FlyPooterFat FlyBoom FlyRed Boom FlyDrowned Boom FlySuckerSpitDart FlySwarm FlyRing FlyLevel 2 FlyFull FlyHush FlyBall of FliesSpiderBig SpiderTriteRaglingRag TriteLevel 2 SpiderTicking SpiderBaby Long LegsCrazy Long LegsWall CreepBlind CreepRage CreepPara-BiteCod WormScarred Para-BiteRound WormNightcrawlerRoundyUlcerMaggotChargerSpittyConjoined SpittyDrowned ChargerGrubClottyClotMega ClottyLeechKamikaze LeechHoly Leech
Objects
BoilGutSackBlue BoilHostRed HostWall HuggerSlidePokyStone GrimaceVomit GrimaceGaping MawTurret GrimaceBrimstone Grimace
Humanoids
MulliganMulligoonMulliboomHiveSwarmerNestDrowned HiveHopperFlaming HopperLeaperPacerGusherSplasherGaperFrowning GaperGurgleMr. MawFlaming GaperCyclopiaSkinnyRottyNullGreed GaperBlue GaperSwingerHorfPsychic HorfGlobinGazing GlobinBlack GlobinDank GlobinKnightSelfless KnightFloating KnightBone KnightBonyBlack BonyFattyFlaming FattyConjoined FattyBlue Conjoined FattyPale FattyKeeperHangerVisDouble VisChubberCage VisScarred Double VisHomunculusBegottenDopleEvil Twin
Body parts
Mask + HeartBrainMemBrainGutsMama GutsEyeBloodshot EyeMom's HandDead Mom's HandScarred GutsNerve EndingStone Eye
Poop
DipCorn DipBrown DipSquirtDank SquirtDinga
Flyers
MawRed MawPsychic MawDeath's HeadDank Death's HeadFlesh Death's HeadLil' HauntWizoobRed GhostOne ToothFat BatTumorPsy TumorCamillo Jr.BabyAngelic BabyImpDukieOobBlack Maw
Others
FredLumpEmbryoB. Licker

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