Scolex

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Scolex
Boss Scolex.png
Base HP
300
Stage HP
0
Found In
Stage womb.pngStage scarred womb.png
Stage the void.png
Dropped Items
Boss Boss  

Scolex is a large tapeworm boss found in The Womb and the Scarred Womb.

Behavior[edit | edit source]

Scolex is invulnerable to damage. Only his tail, which constantly blinks, can be damaged.

  • Jumps out of the ground towards the player, then burrows back into the ground. This attack is repeated multiple times. If Scolex is hit by any explosion, he will be deflected back from the explosion when in midair.
  • When Scolex's head pops out, he will shoot multiple blood shots of various sizes, similar to Monstro.
  • When Scolex's tail pops out, he will fire three Red Ipecac Ipecac
    Ipecac Icon.pngReplaces tears with explosive and poisoning projectiles fired in an arc from the mouth.
    shots at the player.

Champion Versions[edit | edit source]

  • Black: Scolex is larger, slower, and has more health.

Gallery[edit | edit source]

Notes[edit | edit source]

Trivia[edit | edit source]

  • Scolex can be considered an older or younger version of Pin, but not a posthumous one (that title goes to The Frail).
  • A scolex is the name of the head of a tapeworm.
  • Scolex was present in the original Binding of Isaac.
  • Compared to the original Binding of Isaac, Scolex's head and tail attacks are swapped.
  • Scolex bears some resemblance to a mythological Mongolian Death Worm, which are described as long, scaly, and blood red. It also raises half its body out of the sand and covers its prey with a lethal acidic substance, which is somewhat similar to Scolex's head attack.

Bugs[edit | edit source]

Bug Bug! When Scolex is slowed, some of his body parts may detach or won't even show up - they will only be visible while entering the ground (especially the tail).
Bug Bug! If the final vulnerable segment of Scolex's tail is destroyed using the Chaos Card, the boss will glitch and become harder to kill. The tail will appear again if his head gets bombed or he hits Isaac.
Bug Bug! If you petrify Scolex (with Mom's Contacts or other similar items) when it is in mid-air, you can damage any segment of its body.
Bug Bug! If you fire immediately upon entering the Boss Room, rarely, you can damage Scolex before it emerges.
Bug Bug! Added in Afterbirth † If Scolex is under the effects of Broken Modem in mid-air, his jump will be stopped and he will fall.
Bug Bug! If Scolex is frozen with Midas' Touch or Dad's Ring and attacked, he can split into two halves, one with his head and one with his tail.


Bosses Boss Monstro.png
Chapter 1 Blighted OvumDingleThe Duke of FliesFamineFistulaGeminiGurglingsThe HauntLarry Jr.MonstroPinStevenWidow
Added in Afterbirth DangleLittle HornRag ManTurdlings
Chapter 2 C.H.A.D.ChubDark OneGurdyGurdy Jr.The HollowThe HuskMega FattyMega MawPeepPestilencePolycephalusCarrion QueenThe 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 LegsDeathIt LivesLokiiMama GurdyMom's HeartMr. FredScolexTeratomaTriachnid
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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