Binding of Isaac: Rebirth Wiki
(in Repentance)

Tainted characters are different versions of already existing characters, both in terms of gameplay and design. They are considered completely new characters, raising the total number of characters to 34 in The Binding of Isaac: Repentance.

They are unlocked by using the Collectible Red Key iconRed Key, Cracked KeyCracked Key, or Soul of CainSoul of Cain on the left side of the wall in the hall before Mom's Bedroom in HomeHome with each non-Tainted Character.

They can be accessed via the Character select menu by pressing E on the keyboard or RB on controller. The menu will appear a lot more worn with tears in the wallpaper.

As the Tainted Characters, certain unlocks require multiple completion marks: Boss Satan ingameSatan, Boss Isaac ingameIsaac, Boss The Lamb ingameThe Lamb, and Boss ??? ingame??? all contribute to just one unlock with Boss RushBoss Rush and Boss Hush ingameHush accounting for one unlock as well. On top of this, Tainted Characters lack an unlock for defeating Boss Mom's Heart ingameMom's Heart/ Boss It Lives ingameIt Lives on Hard Mode, Boss Ultra Greed ingameUltra Greed, completing all Hard mode completion marks, and naturally lack a corresponding Tainted Character unlock. This results in each only having 7 unlocks rather than the standard 15.

Characters[ | ]

Notes[ | ]

  • The Collectible Red Key iconRed Key is guaranteed the first time Isaac enters HomeHome and is unlocked by opening the chest in Mom's bedroom for the first time. After that, Mom's Chest will pull from its own item pool which includes Mom-related items as well as the Red Key rarely.
  • In order to guarantee an unlock on subsequent trips to HomeHome, Isaac must leave a trinket in either a Treasure RoomTreasure Room or a Boss RoomBoss Room. When he reaches the Ascent after picking up Collectible Dad's Note iconDad's Note, the trinket that was left will transform into a Cracked KeyCracked Key in the corresponding room.
  • To unlock these characters, Isaac does not need to defeat Boss Dogma ingameDogma or Boss The Beast ingameThe Beast on the run he opens the closet. They will be unlocked as soon as he touches them (or lets a BombBomb explode next to them) regardless of what happens during the following battles.
  • Tainted characters that start with an active item (except for Character Tainted Eden iconTainted Eden) will have that item in their consumable slot rather than the usual active item slot. The item will recharge as expected and can be used normally with the consumable button. Consumables such as cards and pills can still be picked up, and can be swapped with the starting active by pressing the swap button. Other active items will go in the normal active slot.

Trivia[ | ]