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Chub Full3

Boss Chub

Official artwork by Edmund McMillen
Floor(s) The Caves

The Carrion Queen

Item Drop(s) Common Drops

WotL Common Drops

Rebirth Stats
Base HP 350
Stage HP 0
Chub (also known as "Mrs. Maggot" from the art booklet in the Unholy Edition) is a giant maggot boss who spawns Chargers to fight alongside her. Chub also charges at Isaac.


Chub charges at Isaac quickly while opening her mouth wide when he gets in her line of sight. However, Isaac usually has enough time to sidestep away. Dropping a Bomb in the path of her charge will cause her to eat it. This stuns her for a short time, and then explodes inside her, dealing a large amount of damage.

Chub can also spawn Chargers, up to a maximum of two at once. These Chargers can be destroyed by her own charge if they get in her way.


  • Chub is similar to Larry Jr. in that she has multiple segments that can be hit (these cannot be destroyed separately, however). Items that can pierce through enemies (Cupid's Arrow, Technology/Technology 2, Shoop Da Whoop!, and so on) are a huge asset against her.
  • Unlike most attacks early in the game, Chub's charge will deal a full heart of damage if it hits instead of half a heart.

Champion Varieties


Chub alt blue full

When blue, she is much larger in size, much more resistant to knockback, and slow. Instead of spawning chargers, she'll spawn blue Boils (Functions identically to regular Boils, and does not drop any Pick Ups upon death)


Chub orange

She is slightly smaller than normal, and she has much faster and more unpredictable movement, both when moving normally and charging at Isaac. She will spawn Spities instead of Chargers, up to a maximum of 2.


Short chub

Outside of Boss rooms, Chub may occasionally spawn without her 3rd segment making her unable to spawn enemies. In this form, Chub may use the spawning animation, but will not spawn any enemies in this situation, leaving her briefly vulnerable. Typically spawns with two Larry Jr. bosses with her. This is an intentional weakening of the boss, possibly for balance reasons.


  • Chub appears in the demo.
  • Chub's tendency to eat bombs only to have them blow up internally is very reminiscent of the Dodongos and Dodongo Snakes from the Zelda series.
  • Chub's face in the title card from the original The Binding of Isaac game is almost exactly like the one shown in the "Poker Face" meme. This is very likely intentional.
  • Chub has been identified as female via Edmund's formspring account [1].


  • If fighting her as a mini-boss, where the doors or a secret room entrance is bombable, it is possible to win against her incredibly easily if Isaac has two bombs. Bomb one of the doors, and make her charge into it. She will become stuck in the door, allowing Isaac to freely damage her. However, she seems to not take damage from tears and has to be finished off with a second bomb. Also, if Isaac has XRay Vision, he doesn't need to spend any bombs to trap her in the door.


WARNING: Spoiler ahead!


Basement Larry Jr.MonstroThe Duke of FliesGeminiStevenFamine
Cellar WidowPinThe Duke of FliesFamineGurdy Jr.The Blighted Ovum
The Caves FistulaPeepGurdyChubC.H.A.D.Pestilence
Catacombs The HuskThe HollowThe Blighted OvumThe Carrion QueenPeepPestilenceThe WretchedGurdy Jr.
The Depths LokiMonstro IIGishWarMom
Necropolis Mask of InfamyDaddy Long LegsThe Carrion QueenThe BloatLokiWarThe WretchedMom
The Womb ScolexBlastocystThe BloatDeathConquestDaddy Long LegsTriachnidTeratomaMom's HeartIt Lives
Utero TeratomaThe BloatDeathConquestDaddy Long LegsTriachnidLokiiMom's HeartIt Lives
Sheol The FallenSatan
Cathedral Isaac
The Chest ???
First to fifth and seventh level The FallenHeadless Horseman
Devil Room Krampus

Start a Discussion Discussions about Chub

  • Little Steven pls

    2 messages
    • I have no clue how this  happened but while fighting Chubs I took damage and a Little Steve familiar popped up and started following...
    • This happens when you're reduced to a half of a red heart of health or when you have half a red heart + soul hearts and you take any damage w...
  • Chub's health

    3 messages
    • sir i have one small thing to say and that is that from what i remeber chub is female not male as some bosses such as gurdy (or at least i th...
    • and if its not there al ready i think that you should

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