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Boss Chub name.png
Boss versus screen image
In-game appearance
Appearance as one of Delirium's forms
Stage caves.pngStage flooded caves.png
Challenge Room Icon.pngBoss Challenge Room Icon.pngSuper Secret Room Icon.png
Double Trouble
Stage depths.png
Stage depths.pngStage necropolis.pngStage dank depths.png
Stage womb.pngStage utero.pngStage scarred womb.png
Stage cathedral.png
Stage chest.pngStage dark room.png
Boss Boss  

Chub is a boss found in The Caves and the Flooded Caves. Chub is a large maggot which will charge Isaac as well as spawn chargers to aid her.

Behavior[edit | edit source]

  • Chub charges at Isaac whenever in line of sight, dealing damage upon hit.
    • Even after hitting Isaac, Chub will continue to charge until she hits a wall.
  • If Isaac drops a bomb in front of Chub when she's charging, she will eat the bomb, freezing in place with a terrified face (the same face in the death animation) and being dealt damage to after a small delay.
  • Chub will occasionally spawn Chargers, which will chase Isaac whenever in line of sight.

Champion Variants[edit | edit source]

  • Orange: Smaller and faster than normal. Spawns Spitties instead of Chargers.
  • Blue: Larger and slower than normal. Spawns Black Boils instead of Chargers.

Notes[edit | edit source]

  • Chub is often paired with Chargers in the boss room.
    • Added in Afterbirth She can also be paired with Drowned Chargers.
  • Sometimes, Chub can spawn with only two segments, preventing her from spawning anything.
  • When using Dr. Fetus' bomb combined with a shot type that passes through enemies, Chub will not eat the bomb.
  • Each segment of Chub can be individually damaged, so a single piercing tear could possibly hit Chub multiple times.
  • Chub will eat troll bombs (such as those set by other bosses) just like bombs dropped by Isaac.
  • Best Friend can damage Chub if eaten, similar to a bomb.

Gallery[edit | edit source]

Trivia[edit | edit source]

  • Carrion Queen is the posthumous version of her, and C.H.A.D. is the alternate version.
  • Chub is one of three bosses to have its posthumus version in the same chapter, the other cases being Gemini having Blighted Ovum in Chapter 1 and Polycephalus having The Stain in Chapter 2.
  • Chub appeared in the original Binding of Isaac.
  • Chub is confirmed to be female.
  • Chub may also be a reference to the Dodongos from The Legend of Zelda, which Link had to toss bombs into their mouths to kill. This is supported by the Rules Card's display of "CHUB DISLIKES SMOKE", a reference to "DODONGO DISLIKES SMOKE" from the original Legend of Zelda.
  • Added in Afterbirth † The Matriarch is a boss from Booster Pack #5 that is simultaneously based of Chub herself, Fistula, and Fistuloid. When at low HP, she will split into Chub.
    • Unlike the usual pattern, if the Chub from The Matriarch eats a bomb, she'll spit it back at the player.
  • Chub is one of the three bosses that can be spawned by It Lives, the other two being Polycephalus and Teratoma.

Bugs[edit | edit source]

Bug Bug! If Chub is killed while frozen by Mom's Contacts, only the part to receive the last shot will die.

Bosses Boss Monstro.png
Chapter 1 Blighted OvumDingleThe Duke of FliesFamineFistulaGeminiGurglingsThe HauntLarry Jr.MonstroPinStevenWidow
Added in Afterbirth DangleLittle HornRag ManTurdlings
Chapter 2 Carrion QueenC.H.A.D.ChubDark OneGurdyGurdy Jr.The HollowThe HuskMega FattyMega MawPeepPestilencePolycephalusThe Wretched
Added in Afterbirth The ForsakenThe FrailThe Stain
Added in Afterbirth † Big HornRag Mega
Chapter 3 The AdversaryThe BloatThe CageThe GateGishLokiMask Of InfamyMonstro IIWarMom
Added in Afterbirth Brownie
Added in Afterbirth † Sisters Vis
Chapter 4 BlastocystThe BloatConquestDaddy Long LegsDeathLokiiMama GurdyMr. FredScolexTeratomaTriachnidMom's HeartIt Lives
Added in Afterbirth † Sisters VisThe Matriarch
Added in Afterbirth Blue Womb Added in Afterbirth Hush
Chapter 5 SatanIsaac
Chapter 6 ???The LambMega Satan
Added in Afterbirth Greed Mode Added in Afterbirth Ultra Greed
Added in Afterbirth † Ultra Greedier
Added in Afterbirth † The Void Added in Afterbirth † Delirium
Chapters 1-4 The FallenThe Headless Horseman

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