Binding of Isaac: Rebirth Wiki
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(in Repentance)

C Section is an unlockable passive item added in The Binding of Isaac: Repentance.

Effects[ | ]

  • Isaac gains a short delay charge attack that fires homing, piercing, spectral fetus tears.
    • The fetus tears do 75% of Isaac's Damage, 3.75 times per second, until they run out of Range.
    • The fetuses will automatically fire when Isaac is at full charge, meaning the charge cannot be held.
    • Charge time is calculated based on Tear Delay.
      • Fetuses per second is capped at 15.

Notes[ | ]

  • Fetus size scales with damage.
  • The fetuses slow down upon contacting enemies, making its homing effect more powerful.

Synergies[ | ]

  • Collectible Berserk! iconBerserk!: Isaac can fire the fetuses on duration. The fetuses hold and attack with bone clubs that are identical to Character The Forgotten iconThe Forgotten's one.
  • Collectible Brimstone iconBrimstone / Character Azazel iconAzazel: Shoots 4 fetus tears along with the brimstone beam.
  • Collectible Compound Fracture iconCompound Fracture: Fetuses are skeletons that shoot splitting bone fragments when in contact with an enemy.
  • Collectible Cricket's Body iconCricket's Body: Fetuses drop four short-ranged tears when they hit the ground.
  • Collectible Dead Eye iconDead Eye: Damage boost is granted once a fetus hits an enemy (once per fetus) and is reset when a fetus does not hit anything before going down, using the same rule to determine whether the damage boost is reset or not.
    • This makes for a great synergy since the fetuses are homing and stay up much longer than regular tears.
  • Collectible Dr. Fetus iconDr. Fetus: The fetuses drop small bombs when they touch an enemy. The bomb's damage follows Dr. Fetus' damage calculation, based on half of the fetuses damage. A fetus can drop only one bomb.
  • Collectible Explosivo iconExplosivo: Some Fetuses stick to enemies, expand then explode. However, they do not inflict their contact damage while sticking.
    • Explosivo + Collectible Mom's Knife iconMom's Knife: The knives from fetuses with Explosivo's effect create exploding tears for each damaging tick. The explosions from a knife deal 60 + half of the fetus' damage which held it.
    • Explosivo + Collectible Berserk! iconBerserk! / Collectible Spirit Sword iconSpirit Sword / Character The Forgotten iconThe Forgotten / Character Tainted Forgotten iconTainted Forgotten: The clubs/swords from fetuses with Explosivo's effect create exploding tears for each damaged enemy from their attack. The explosions from a club/sword deal 60 + the damage its attack dealt.
    • Explosivo + Collectible Technology iconTechnology: The lasers from fetuses with Explosivo's effect create exploding tears for each damaged enemy from their attack. The tears inherit the fetuses' property including laser attacks, which can create another tears. The tears from a laser deal 60 + the laser's damage they originated, and their lasers deal the same as the lasers they originated. Fetuses can fire lasers while sticking to an enemy and spin, while tears do not spin.
    • Explosivo + Collectible Tech X iconTech X: The laser rings from fetuses with Explosivo's effect create exploding tears for each damaging tick. The explosions from a ring deal 60 + the ring's damage.
  • Character The Forgotten iconThe Forgotten / Character Tainted Forgotten iconTainted Forgotten: Fetuses are skeletons that attack with bone clubs in addition to contact damage. The fetuses from Tainted Forgotten deal 80% of their normal damage.
    • With Collectible Brimstone iconBrimstone: Spawns a brimstone ball along with a fetus. Shots are fired automatically as the charge completes.
    • With Collectible Mom's Knife iconMom's Knife: Fetuses hold knives instead of bone clubs and no longer perform the swing attacks.
    • With Collectible Monstro's Lung iconMonstro's Lung Tears remain unchanged, the forgotten will fire a burst attack alongside the fetus. No effect on the soul.
    • With Collectible Technology iconTechnology: Fetuses perform laser attacks and enhanced bone club attacks separately, causing more damage.
  • Collectible Godhead iconGodhead: Fetuses have a glowing aura around them, but the aura cannot damage the enemy in contact with the fetuses.
  • Collectible Haemolacria iconHaemolacria: Fetuses explode into a burst of tears when they hit the ground.
  • Collectible Ipecac iconIpecac: The fetuses explode on impact dealing its contact damage, which is often massively increased from the item.
  • Collectible Jacob's Ladder iconJacob's Ladder: Fetuses zap nearby enemies.
  • Luck-based tear effects (e.g. Collectible Holy Light iconHoly Light / Collectible Knockout Drops iconKnockout Drops): If a fetus has the effect, the fetus causes the effect for each damaging tick.
    • Collectible Little Horn iconLittle Horn: Still only two hands can appear at once.
    • Collectible Ocular Rift iconOcular Rift: The rifts spawn only once per fetus.
    • Luck-based tear effects + Collectible Angelic Prism iconAngelic Prism: If Isaac's speed is greater than the speed of a fetus he can manually walk the prism through any fetus with a luck-based tear effect (or any fetus) greatly multiplying its effectiveness.
    • Luck-based tear effects + Collectible Mom's Knife iconMom's Knife: If a fetus has the effect, the knife also causes the effect for each damaging tick. If not, the knife has chance to cause the effect based on Isaac's Luck for each damaging tick.
    • Luck-based tear effects + Collectible Berserk! iconBerserk! / Collectible Spirit Sword iconSpirit Sword / Collectible Technology iconTechnology / Character The Forgotten iconThe Forgotten / Character Tainted Forgotten iconTainted Forgotten: If a fetus has the effect, each attack also causes the effect.
    • Luck-based tear effects + Collectible Tech X iconTech X: If a fetus has the effect, the laser ring also causes the effect for each damaging tick.
  • Collectible Mom's Knife iconMom's Knife: Fetuses hold small knives in their front, causing extra damage. The knife deals twice of Isaac's Damage just as when it is held by Isaac and their size scales with the fetuses' size. Any additional copy of the item causes Isaac to shoot more fetuses.
    • Mom's Knife + Collectible Proptosis iconProptosis: The knives shrink along with the fetuses, but they retain their tripled damage.
    • Mom's Knife + Collectible Brimstone iconBrimstone: Instead of a barrage of knives, fires a normal Brimstone beam alongside knife-carrying fetuses.
  • Collectible Mucormycosis iconMucormycosis: Some Fetuses stick to enemies, expand then burst. However, they do not inflict their contact damage while sticking. Unlike normal spores, the fetuses from the burst can home into the enemy they burst from.
    • Mucormycosis + Collectible Mom's Knife iconMom's Knife: The knives from fetuses with Mucormycosis' effect create spores for each damaging tick. Their knives deal twice of Isaac's Damage, same as the ones they originated.
    • Mucormycosis + Collectible Berserk! iconBerserk! / Collectible Spirit Sword iconSpirit Sword / Character The Forgotten iconThe Forgotten / Character Tainted Forgotten iconTainted Forgotten: The clubs/swords from fetuses with Mucormycosis' effect create spores for each damaged enemy from their attack. The fetuses from the burst also hold clubs/swords which are able to create another wave of spores. The damage of attacks are calculated based on half of the spores' flat 3.5 damage.
    • Mucormycosis + Collectible Technology iconTechnology: The lasers from fetuses with Mucormycosis' effect create spores for each damaged enemy from their attack. The spores inherit the fetuses' property including laser attacks, which can create another spores. The fetuses from the burst also has laser attacks which are able to create another wave of spores. Their laser attacks deal 3.5 damage, based on the spores' flat 3.5 damage. Fetuses can fire lasers while sticking to an enemy and spin, while spores do not spin.
    • Mucormycosis + Collectible Tech X iconTech X: The laser rings from fetuses with Mucormycosis' effect create spores for each damaging tick. The fetuses from the burst are also surrounded by laser rings which are able to create another wave of spores. Their rings deal 1.75 damage, based on half of the spores' flat 3.5 damage.
  • Collectible My Reflection iconMy Reflection: Fetuses travel a short distance, then reverse direction and return to Isaac.
  • Collectible The Parasite iconThe Parasite: Fetuses fire short-ranged tears constantly while in contact with an enemy.
  • Collectible Parasitoid iconParasitoid: Parasitoid fetuses spawn spiders/flies and slowing creep with every hit on an enemy.
  • Collectible Polyphemus iconPolyphemus: Grants +5 flat damage with no fire rate down.
  • Collectible Sinus Infection iconSinus Infection: Some Fetuses stick to enemies. However, they only do the Sinus Infection damage ticking and often result in dealing much less damage.
    • Sinus Infection + Collectible Mom's Knife iconMom's Knife: The knives from fetuses Sinus Infection's effect create boogers for each damaging tick. The boogers from a knife deal half of the fetus' damage which held it per tick.
    • Sinus Infection + Collectible Berserk! iconBerserk! / Collectible Spirit Sword iconSpirit Sword / Character The Forgotten iconThe Forgotten / Character Tainted Forgotten iconTainted Forgotten: The clubs/swords from fetuses with Sinus Infection's effect create boogers for each damaged enemy from their attack. The boogers from a club/sword deal half of the fetus' damage which held it per tick.
    • Sinus Infection + Collectible Technology iconTechnology: The lasers from fetuses with Sinus Infection's effect create boogers for each damaged enemy from their attack. The boogers inherit the fetuses' property including laser attacks, which can create another boogers. The boogers from a laser deal the laser's damage, so does their lasers. Fetuses can fire lasers while sticking to an enemy and spin, while boogers do not spin.
    • Sinus Infection + Collectible Tech X iconTech X: The laser rings from fetuses Sinus Infection's effect create boogers for each damaging tick. The boogers from a ring deal the ring's damage per tick.
  • Collectible Spirit Sword iconSpirit Sword: Fetuses hold small swords and repeat the swing attack and the charged spin attack as they travel. The damage calculation is based on half of the fetus' damage. On base Range, they have just enough time to perform the attacks twice. The sword's size scales with the fetus' size.
  • Character Tainted Azazel iconTainted Azazel: Shoots 2 fetus tears along with his thin brimstone beam.
  • Collectible Tech.5 iconTech.5 / Collectible Technology 2 iconTechnology 2: Both fire at the same time.
  • Collectible Technology Zero iconTechnology Zero: Fetuses are connected with electricity.
  • Collectible Tech X iconTech X: Fetuses are surrounded by a laser ring that deals half of their damage. The ring's size scales with the fetus' size.
    • Tech X + Collectible Brimstone iconBrimstone: The laser rings do not change into brimstone rings. The Brimstone has no effect unless combined with other additional items.
    • Tech X + Collectible Proptosis iconProptosis: The rings shrink along with the fetuses, but they retain their tripled damage.
  • Collectible Technology iconTechnology: Fetuses rapidly shoot a short-ranged laser based on their damage when facing enemies.
    • Technology + Collectible Cricket's Body iconCricket's Body: Split tears created from the end of the laser inherit the effects of fetus tears including laser attacks from Technology, but they do not create another split tears.
    • Technology + Collectible Lachryphagy iconLachryphagy: Fetuses can feed on either other fetuses or Lachryphagy tears which their laser attacks create. Fed fetuses shoot stronger lasers, creating powerful Lachryphagy tears.
    • Technology + Collectible Pop! iconPop!: Pop! tears created from the end of the laser inherit the effects of fetus tears including laser attacks from Technology, which can create another Pop! tears.
    • Technology + Collectible Proptosis iconProptosis: Although the laser's damage diminishes along with the fetus, it does not lose its damage over range.
    • Technology + Collectible Spirit Sword iconSpirit Sword: Fetuses hold lightsabers and perform laser attacks and enhanced sword attacks separately, causing more damage.

Interactions[ | ]

Overridden by C Section:

Other interactions:

  • Collectible Anti-Gravity iconAnti-Gravity: Fetuses will begin stuck in-place as expected, but will ignore this behavior if there are nearby enemies, in which case they will home in and chase them. Range "lifetime" is still ticking during the stuck time unlike normal tears, making them markedly harder to use and shorter lasting.
  • Collectible BFFS! iconBFFS!: No effect; fetuses are considered tears, not familiars.
  • Collectible C Section iconC Section: No additional effect for multiple copies of the item.
  • Collectible Epic Fetus iconEpic Fetus: Overrides C Section making Epic Fetus the only item in the game that can override it.
  • Collectible Eye of Belial iconEye of Belial: Fetuses' appearances change into Eye of Belial tears when passing through an enemy, but they retain their effects.
  • Collectible Fire Mind iconFire Mind: The fetuses can explode and leave fires before they run out of Range, which can result in inflicting less damage.
  • Collectible Flat Stone iconFlat Stone: Fetuses only bounce after going rather far or damaging enemies for long enough.
  • Collectible Immaculate Heart iconImmaculate Heart/Collectible Saturnus iconSaturnus: No unique interactions; regular tears are generated which orbit Isaac normally.
  • Collectible Knockout Drops iconKnockout Drops: Fetuses affected by it have the appearance of a fist, but they retain their effects.
  • Collectible Lachryphagy iconLachryphagy: Burst tears appear to be fetuses, but they do not retain Homing or Piercing effect from C Section.
  • Collectible Lead Pencil iconLead Pencil: low range burst of 12 non-fetus tears every 15 fetuses fired.
  • Collectible Multidimensional Baby iconMultidimensional Baby: Fetuses' appearances change into normal tears when passing through Multidimensional Baby, but they retain their effects.
  • Collectible Pop! iconPop!: Fetuses' movements do not extend their lifespan, it is still limited by Range. Fetuses do not fall after bouncing off of each other 8 times.
  • Collectible Sad Bombs iconSad Bombs / Collectible Tammy's Head iconTammy's Head: Fires normal tears.
  • Collectible Sharp Key iconSharp Key: No effect on thrown keys.
  • Collectible Tear Detonator iconTear Detonator: Fetuses split into normal tears.

In-game Footage[ | ]

Gallery[ | ]

C Section has a variety of appearances for its fetus shots. It depends mostly on the color of the character's body and is influenced mostly by costumes. There are a few unique appearances for specific items/characters.

Image Notes
C Section Tears Default Default; appearance when fired by the large majority of characters.
C Section Tears Black Character Azazel iconAzazel, Character Lilith iconLilith, Character Tainted Azazel iconTainted Azazel, Character Tainted Lilith iconTainted Lilith, Collectible Brimstone iconBrimstone, Collectible Ball of Tar iconBall of Tar, or any other effects that turn the character's body black.
C Section Tears Blue Character ??? (Character) icon???, Character The Soul (Character) iconThe Soul, Character Tainted ??? iconTainted ??? (albeit heavily brown tinted), Collectible Anti-Gravity iconAnti-Gravity, Collectible Neptunus iconNeptunus, or any other effects that turn the character's body blue.
C Section Tears Dark Character Dark Judas iconDark Judas or Character Tainted Judas iconTainted Judas.
C Section Tears Green Collectible Infestation iconInfestation or any other effects that turn the character's body green.
C Section Tears Grey Character Keeper iconKeeper, Character Apollyon iconApollyon, Character Tainted Lost iconTainted Lost, Character Tainted Keeper iconTainted Keeper, Character Tainted Apollyon iconTainted Apollyon, Collectible Terra iconTerra, Collectible Tooth and Nail iconTooth and Nail (while active), VII - The Chariot?VII - The Chariot? (unless in the Edith costume; see below), or any other effects that turn the character's body grey.
C Section Tears Red Character Esau iconEsau, Collectible SMB Super Fan iconSMB Super Fan, Collectible Razor Blade iconRazor Blade, Red PatchRed Patch, or any other effects that turn the character's body red.
C Section Tears Skeleton Character The Forgotten iconThe Forgotten (not Character The Soul (Character) iconThe Soul), Character Tainted Forgotten iconTainted Forgotten, or Collectible Compound Fracture iconCompound Fracture.
C Section Tears White Character The Lost iconThe Lost, Character Dead Tainted Lazarus iconDead Tainted Lazarus, any character in their ghost form, Collectible Uranus iconUranus, the Edith costume from VII - The Chariot?VII - The Chariot?, or any other effects that turn the character's body white.

Trivia[ | ]

  • A Caesarean Section, or C Section for short, is a surgical procedure by which a baby is delivered through an incision in the mother's abdomen.
  • Isaac's body resembles a VisVis. The fetus shots themselves resemble UnbornUnborns.
  • Prior to v1.7.5, this item had no effect other than changing Isaac's appearance and appeared in no item pools. Nonetheless, obtaining it was still required in order to unlock the Dead God Dead God Achievement.
    • It was only obtainable via Collectible Death Certificate iconDeath Certificate and Collectible Spindown Dice iconSpindown Dice, or as a starting item for Character Eden iconEden / Character Tainted Eden iconTainted Eden.
    • According to Edmund McMillen, C Section was a "dream item" whose mechanics and many hard-coded synergies were too complex to implement at Repentance's launch, with Kilburn "obsessively" working on the item and other parts of Repentance.[1]

Bugs[ | ]

Bug Bug! There's no idle animation for C Section's costume, so Isaac (and every other character other than Character Lilith iconLilith) will always appear to be walking when charging a shot, even when stationary.
Bug Bug! Character Tainted ??? iconTainted ??? does not have a costume assigned for C Section (despite Character ??? (Character) icon??? having one), and nonetheless always appears to be walking while charging a shot, even when stationary (see previous bug).
Bug Bug! While Isaac has both C Section and Collectible Incubus iconIncubus (including Character Lilith iconLilith's inherent Incubus), Incubus' flying animation does not play while not firing; it floats around with no animation at all. The animation plays normally while firing.

References[ | ]


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