Binding of Isaac: Rebirth Wiki
Binding of Isaac: Rebirth Wiki

Added in Repentance

Tainted Azazel is a character added in The Binding of Isaac: Repentance. He is the alternate version of Azazel Azazel but his horns are broken with blood leaking from the left stump, and his wings were cut or ripped off. Tainted Azazel is unlocked by reaching Home Home and using either the 15►Red Key Red Key or the Cracked Key Cracked Key to access a special room in one of the walls while playing as Azazel.

Tainted Azazel starts with 3 black hearts and has his short 15►Brimstone Brimstone replaced with a room-long version that is very thin, high-pitched in sound, and deals only x0.5 damage per tick. If the charge is released before full, it will activate 15►Hemoptysis Hemoptysis, causing a short-range, high-knockback "sneeze" attack that will paint the enemy faintly red and deal x1.5 damage. Enemies will also take damage when knocked into walls or obstacles, and deal damage when colliding with other enemies. Furthermore, enemies affected by Hemoptysis will take full damage from his Brimstone beam for approximately 5 seconds. Unlike Azazel, he cannot fly.

Unlockable Items[]


  • Avoid 15►Brimstone Brimstone as picking it up will not increase the width or damage of Tainted Azazel's beam.
    • However, it is worthwhile if two copies are present, as Tainted Azazel's damage will be increased along with the size of the beam.
    • Likewise, stacking two uses of 15►Sulfur Sulfur in the same room will also temporarily increase the damage and size of the beam.
  • Picking up items like 15►Haemolacria Haemolacria or 15►Mom's Knife Mom's Knife will change Brimstone to normal tears.
  • 15►Tech X Tech X overrides Hemoptysis and Brimstone, firing normal Technology rings.
  • 15►Spirit Sword Spirit Sword overrides Hemoptysis and Brimstone but sword swings will deal increased damage.
  • The laser ring created by 15►The Ludovico Technique The Ludovico Technique deals full damage without needing to first use Hemoptysis.
  • In Co-Op, when Tainted Azazel dies, his ghost will maintain his Brimstone and Hemoptysis abilities. The first is weakened by the damage debuff applied to ghostly players, and the second is weakened as it has a very small size when dead.
  • 15►Ipecac Ipecac sneezes are harmless to Tainted Azazel, as he's too far from the sneeze to be damaged by it, but sneezes from 15►Incubus Incubus with Ipecac are capable of damaging Tainted Azazel.
  • Picking up 15►Lachryphagy Lachryphagy as Tainted Azazel turns his brimstone into a short range attack that leaves Lachryphagy tears.

15►Birthright Birthright effect[]

Doubles the size of Tainted Azazel's 15►Hemoptysis Hemoptysis attack, but doesn't increase damage.


  • The achievement for unlocking Tainted Azazel is "The Benighted", a possible title for the character.
    • "Benighted" means "overtaken by darkness" or "in a state of ignorance", which may be linked to how Azazel is Isaac's inner demon.



Bug Bug! When champion bosses are affected by the Hemoptysis effect, they just turn into their normal variation color.


Isaac CharNav New.png Maggy CharNav New.png Cain CharNav New.png Judas CharNav New.png BB CharNav New.png Eve CharNav New.png Samson CharNav New.png Azazel CharNav New.png Lazarus CharNav New.png Eden CharNav New.png Lost CharNav New.png


Tainted Isaac CharNav New.png Tainted Maggy CharNav New.png Tainted Cain CharNav New.png Tainted Judas CharNav New.png Tainted BB CharNav New.png Tainted Eve CharNav New.png Tainted Samson CharNav New.png Tainted Azazel CharNav New.png Tainted Lazarus CharNav New.png Tainted Eden CharNav New.png Tainted Lost CharNav New.png Tainted Lilith CharNav New.png Tainted Keeper CharNav New.png Tainted Apollyon CharNav New.png Tainted Forgotten CharNav New.png Tainted Bethany CharNav New.png Tainted Jacob CharNav New.png

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