Binding of Isaac: Rebirth Wiki
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Blighted Ovum is a boss that can appear in the CellarCellar.

Behavior[ | ]

Blighted Ovum starts separated into two parts.

  • Suture, now a ghost, is invincible and slowly floats towards Isaac, firing a horizontal Collectible Brimstone iconBrimstone shot whenever Isaac is to his left or right. Suture cannot be killed and will die once Contusion does.
  • Contusion constantly chases Isaac while leaving behind a trail of Red Creep, and he periodically charges and gains speed. Unlike Boss Gemini ingameGemini, he will not stop for a breath but slows down to his regular speed.

Gallery[ | ]

Notes[ | ]

Trivia[ | ]

  • Blighted Ovum was added in the Wrath of the Lamb DLC for the original The Binding of Isaac.
  • They are the posthumous version of Gemini.
  • In medicine, a blighted ovum is a pregnancy in which the early pregnancy appears normal on an ultrasound scan, but later no visible embryo develops.
  • (except in Repentance) Contusion has skin on his body in the boss art, but he doesn't in-game.
  • Blighted Ovum is the only boss in chapter 1 that is a posthumous version of another boss.
  • If encountered in a Double Trouble boss fight, Suture's Collectible Brimstone iconBrimstone laser can damage the other boss.
  • In Wrath of The Lamb, when Blighted Ovum was killed Contusion would shoot 8 extremely fast tears in the cardinal and ordinal directions, and after a short delay would be followed up by Suture who would explode similarly.
  • In the Bestiary, Suture is referred to as "The Blighted Ovum Baby".
  • (in Repentance) Blighted Ovum, Boss Big Horn ingameBig Horn, Boss Triachnid ingameTriachnid, Boss Isaac ingameIsaac and Boss ??? ingame??? are the only bosses whose portraits were completely changed in Repentance (beyond simply adding more detail). Of these, only Triachnid, Isaac, and ??? didn't receive new sprites.
  • In Rebirth, the older boss portrait had Suture smiling in it, which was the 2nd time he had a smile.


Bug Bug! (in Rebirth and Afterbirth) The Collectible D10 iconD10 can reroll the Suture half of Boss Blighted Ovum ingameBlighted Ovum


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