Scolex

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Boss Scolex name.png
Boss versus screen image
 
 
TableDividingLine1.png
 
In-game appearance
TableDividingLine2.png
 
Stage womb.pngStage scarred womb.png
Stage the void.png
TableDividingLine3.png
 
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 IpecacIpecac 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
Stage basement.png
Stage cellar.png
Stage burning basement.png
Blighted OvumDingleThe Duke of FliesFamineFistulaGeminiGurglingsThe HauntLarry Jr.MonstroPinStevenWidow
Added in Afterbirth DangleLittle HornRag ManTurdlings
Chapter 2
Stage caves.png
Stage catacombs.png
Stage flooded caves.png
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
Stage depths.png
Stage necropolis.png
Stage dank depths.png
The AdversaryThe BloatThe CageThe GateGishLokiMask Of InfamyMonstro IIWarMom
Added in Afterbirth Brownie
Added in Afterbirth † Sisters Vis
Chapter 4
Stage womb.png
Stage utero.png
Stage scarred womb.png
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
Stage sheol.png
Stage cathedral.png
SatanIsaac
Chapter 6
Stage dark room.png
Stage chest.png
???The LambMega Satan
Added in Afterbirth Greed Mode
Ultra Greed
Added in Afterbirth Ultra Greed
Added in Afterbirth † Ultra Greedier
Added in Afterbirth † The Void
Stage the void.png
Added in Afterbirth † Delirium
Chapters 1-4 The FallenThe Headless Horseman


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