Binding of Isaac: Rebirth Wiki
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m (Undo revision 238679 by 76.107.219.65 (talk) from what i can see this was removed before repentance. not the proper way to indicate a feature was removed in repentance either)
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*{{dlc|na}} The {{p|XI - Strength}} card gives ??? a permanent soul heart.
 
*{{dlc|na}} The {{p|XI - Strength}} card gives ??? a permanent soul heart.
 
*{{I|Book of Revelations}} Spawns soul hearts.
 
*{{I|Book of Revelations}} Spawns soul hearts.
*{{i|Ceremonial Robes}} costs three Soul Hearts and grants three Black Hearts and damage up. {{Dlc|nr}}Like {{i|Abaddon}}, this item is always safe to take.
+
*{{i|Ceremonial Robes}} costs three Soul Hearts and grants three Black Hearts and damage up. {{Dlc|nr}} Like {{i|Abaddon}}, this item is always safe to take.
 
*{{i|Crown of Light}} will always activate.
 
*{{i|Crown of Light}} will always activate.
 
*{{i|Mitre}} and {{t|Daemon's Tail}} replace useless Red Hearts with Soul and Black Hearts respectively.
 
*{{i|Mitre}} and {{t|Daemon's Tail}} replace useless Red Hearts with Soul and Black Hearts respectively.
 
*{{i|Dark Bum}} converts useless Red Hearts into Black Hearts and Spiders.
 
*{{i|Dark Bum}} converts useless Red Hearts into Black Hearts and Spiders.
**{{Dlc|r}}Dark Bum can now also drop pills, cards, and runes, which can include The Hierophant, Balls of Steel, or Dagaz.
+
**{{Dlc|r}} Dark Bum can now also drop pills, cards, and runes, which can include The Hierophant, Balls of Steel, or Dagaz.
 
*{{i|Dead Cat}} will set Soul Hearts to 1, but can be used to gain devil deals by sacrificing the extra lives.
 
*{{i|Dead Cat}} will set Soul Hearts to 1, but can be used to gain devil deals by sacrificing the extra lives.
 
*{{t|Dim Bulb}} is able to be activated every room due to the single charge on {{i|The Poop}}, providing a consistent stat boost.
 
*{{t|Dim Bulb}} is able to be activated every room due to the single charge on {{i|The Poop}}, providing a consistent stat boost.
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**{{dlc|r}} Using Satanic Bible now also causes boss items to turn into devil deals that cost hearts, so it may be best to hold off on using it until after the boss fight if ??? is low on health.
 
**{{dlc|r}} Using Satanic Bible now also causes boss items to turn into devil deals that cost hearts, so it may be best to hold off on using it until after the boss fight if ??? is low on health.
 
*{{i|Serpent's Kiss}} can produce Black Hearts by poisoning enemies.
 
*{{i|Serpent's Kiss}} can produce Black Hearts by poisoning enemies.
**{{Dlc|r}}Serpent's Kiss now only produces Black Hearts from contact damage poison, making it slightly less useful for ???.
+
**{{Dlc|r}} Serpent's Kiss now only produces Black Hearts from contact damage poison, making it slightly less useful for ???.
 
*{{i|Squeezy}} and {{i|Mr. Dolly}} increase ???'s tears and can grant Soul Hearts.
 
*{{i|Squeezy}} and {{i|Mr. Dolly}} increase ???'s tears and can grant Soul Hearts.
 
*{{i|Whore of Babylon}} is always active.
 
*{{i|Whore of Babylon}} is always active.
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* {{t|Cursed Skull}} will automatically teleport ??? out of the room upon taking any damage, as he doesn't have any Red Hearts.
 
* {{t|Cursed Skull}} will automatically teleport ??? out of the room upon taking any damage, as he doesn't have any Red Hearts.
 
* {{i|Glass Cannon|force=anr}} will bring ??? down to half a Soul Heart, and not give back any health upon leaving a room due to ???'s lack of Red Hearts. This item essentially takes away most of the player's health in exchange for a single high damage tear.
 
* {{i|Glass Cannon|force=anr}} will bring ??? down to half a Soul Heart, and not give back any health upon leaving a room due to ???'s lack of Red Hearts. This item essentially takes away most of the player's health in exchange for a single high damage tear.
**{{dlc|r}}This effect no longer applies in Repentance, making it a more viable choice. Even so, caution should be used, as taking damage will cause all subsequent damage taken in the room to be two full soul hearts, making this especially risky for ???.
+
**{{dlc|r}} This effect no longer applies in Repentance, making it a more viable choice. Even so, caution should be used, as taking damage will cause all subsequent damage taken in the room to be two full soul hearts, making this especially risky for ???.
 
* {{i|Guppy's Paw}}, since requiring Red Hearts to convert, would be a useless item to hold (but should still be picked up and swapped back to get credit towards the [[Guppy]] transformation). Guppy's Paw may still be used to activate {{t|Broken Remote}}.
 
* {{i|Guppy's Paw}}, since requiring Red Hearts to convert, would be a useless item to hold (but should still be picked up and swapped back to get credit towards the [[Guppy]] transformation). Guppy's Paw may still be used to activate {{t|Broken Remote}}.
 
* {{t|Judas' Tongue}} doesn't lower the price of Soul Heart Devil deals.
 
* {{t|Judas' Tongue}} doesn't lower the price of Soul Heart Devil deals.

Revision as of 16:03, 26 April 2021

This article is about the playable character. For other uses, see ??? (Disambiguation).

???, also known as the Blue Baby, is a character unlocked by defeating Mom's Heart ten times. He starts with three Soul Hearts, and his health meter is unique in that he cannot gain red heart containers. If an item would grant him a red heart container (including an empty one), it adds a Soul Heart instead.

Unlockable Achievements

Collectible Birthright iconBirthright Effect

??? Stronger spirit Soul hearts gained from health ups will be doubled. Health down pills will remove 2 soul hearts instead of 1, however.

Item & Strategy Notes

Positive

  • (except in Repentance)Collectible Abaddon iconAbaddon costs three Soul Hearts and grants six Black Hearts, damage up, fear shot, and no negative effects to ???. Abaddon can be bought safely regardless of current health, because its price can be deducted from the acquired Black Hearts retroactively.
  • (in Repentance)Collectible Abaddon iconAbaddon will give 2 black hearts on pickup, granting its effects essentially for one heart.
  • Collectible Ankh iconAnkh is effectively a Collectible 1up! icon1up! for ???.
  • (in Afterbirth and Afterbirth †)Collectible Athame iconAthame can be used to produce black hearts upon taking damage.
  • Balls of Steel pills or V - The HierophantV - The Hierophant grant two soul hearts, both of which are more useful than normal HP up items.
  • The Rune of DagazRune of Dagaz grants one soul heart as well as lifting any curses.
  • (in Rebirth) The XI - StrengthXI - Strength card gives ??? a permanent soul heart.
  • Collectible Book of Revelations iconBook of Revelations Spawns soul hearts.
  • Collectible Ceremonial Robes iconCeremonial Robes costs three Soul Hearts and grants three Black Hearts and damage up. (except in Repentance) Like Collectible Abaddon iconAbaddon, this item is always safe to take.
  • (except in Rebirth)Collectible Crown of Light iconCrown of Light will always activate.
  • Collectible Mitre iconMitre and Daemon's TailDaemon's Tail replace useless Red Hearts with Soul and Black Hearts respectively.
  • Collectible Dark Bum iconDark Bum converts useless Red Hearts into Black Hearts and Spiders.
    • (in Repentance) Dark Bum can now also drop pills, cards, and runes, which can include The Hierophant, Balls of Steel, or Dagaz.
  • Collectible Dead Cat iconDead Cat will set Soul Hearts to 1, but can be used to gain devil deals by sacrificing the extra lives.
  • (in Afterbirth † and Repentance)Dim BulbDim Bulb is able to be activated every room due to the single charge on Collectible The Poop iconThe Poop, providing a consistent stat boost.
  • Collectible Gimpy iconGimpy has a chance to spawn Soul Hearts when hit.
  • (in Afterbirth † and Repentance)Collectible Hallowed Ground iconHallowed Ground turns all Collectible The Poop iconThe Poop uses into holy poops.
  • Collectible Lazarus' Rags iconLazarus' Rags causes ??? to be resurrected as Lazarus Risen when he dies, allowing the gathering of heart containers. Once this happens, however, you are no longer playing as ???, and therefore cannot get any of his achievements/unlocks. The same effect happens with the use of Collectible Judas' Shadow iconJudas' Shadow.
  • (in Afterbirth and Afterbirth †)Collectible Maw of the Void iconMaw of the Void can produce Black Hearts.
  • Collectible Midas' Touch iconMidas' Touch makes Collectible The Poop iconThe Poop create Golden Poop.
  • Monkey PawMonkey Paw will drop 3 Black Hearts, but must take damage for each one to spawn.
  • Petrified PoopPetrified Poop is useful early on to get more pickups from Collectible The Poop iconThe Poop every room.
  • Collectible The Polaroid iconThe Polaroid and Collectible The Negative iconThe Negative always activate when taking damage.
  • Collectible The Relic iconThe Relic, which is generally useful, is especially useful to ??? as it spawns Soul Hearts.
  • Collectible Satanic Bible iconSatanic Bible generates Black Hearts.
    • (in Repentance) Using Satanic Bible now also causes boss items to turn into devil deals that cost hearts, so it may be best to hold off on using it until after the boss fight if ??? is low on health.
  • (except in Rebirth)Collectible Serpent's Kiss iconSerpent's Kiss can produce Black Hearts by poisoning enemies.
    • (in Repentance) Serpent's Kiss now only produces Black Hearts from contact damage poison, making it slightly less useful for ???.
  • Collectible Squeezy iconSqueezy and (except in Rebirth)Collectible Mr. Dolly iconMr. Dolly increase ???'s tears and can grant Soul Hearts.
  • Collectible Whore of Babylon iconWhore of Babylon is always active.

Negative

  • Items that directly add Red Hearts to the health bar, such as Collectible Yum Heart iconYum Heart or full health pills, are useless.
  • Blood Donation Machines and Devil Beggars are riskier, as they deplete health that is harder to replenish.
  • If ??? has only one heart, Collectible Experimental Treatment iconExperimental Treatment has a chance to be lethal.
  • Cursed SkullCursed Skull will automatically teleport ??? out of the room upon taking any damage, as he doesn't have any Red Hearts.
  • (in Afterbirth and Afterbirth †)Collectible Glass Cannon iconGlass Cannon will bring ??? down to half a Soul Heart, and not give back any health upon leaving a room due to ???'s lack of Red Hearts. This item essentially takes away most of the player's health in exchange for a single high damage tear.
    • (in Repentance) This effect no longer applies in Repentance, making it a more viable choice. Even so, caution should be used, as taking damage will cause all subsequent damage taken in the room to be two full soul hearts, making this especially risky for ???.
  • Collectible Guppy's Paw iconGuppy's Paw, since requiring Red Hearts to convert, would be a useless item to hold (but should still be picked up and swapped back to get credit towards the Guppy transformation). Guppy's Paw may still be used to activate Broken RemoteBroken Remote.
  • Judas' TongueJudas' Tongue doesn't lower the price of Soul Heart Devil deals.
  • Collectible Little C.H.A.D. iconLittle C.H.A.D. is useless unless paired with Collectible Dark Bum iconDark Bum, where it becomes very useful.

Notes

  • Sleeping on a bed will give ??? three Soul Hearts.
  • Enemies who deal full hearts of damage can be very dangerous in the early floors of the game.
  • Collectible The Poop iconThe Poop - While not the most useful item, it can allow ??? to cross small gaps by bombing the Poop from the opposite side, much like one would for Rocks. Furthermore, in rooms with non-flying enemies that chase the player (except Spiders), the poop can be used in a corner of the room making ??? untouchable, allowing the player to kill them without taking damage (if the player moves away from the pile of Poop generated, this will no longer work).
  • Bone Hearts grant an empty Bone Heart upon pickup, but they cannot be refilled using Red Hearts.

Trivia

  • ??? appears in the original Binding of Isaac.
    • ???'s unlock requirements in Rebirth are the same in the original Binding of Isaac.
  • The name "Blue Baby" had not appeared in the game itself until the Afterbirth expansion, with a co-op baby named as such.
  • ???'s common nickname, Blue Baby, is a reference to blue baby syndrome, in which a baby's skin complexion appears blue from a lack of oxygen in its blood due to a congenital heart defect.
  • Many of Edmund's older flash games from Newgrounds feature ??? and Collectible Brother Bobby iconBrother Bobby. ??? was Edmund's mascot from 1996-2002.
  • In several cutscenes, Isaac is depicted suffocating inside a chest. ??? is first seen inside an identical chest, and is the follow up boss after Isaac. Blue skin tone is typically used to show suffocation, and X eyes imply that the character is either knocked out or deceased.
    • After death, the bowels of the deceased will loosen, causing them to defecate themselves. This is most likely the reason ??? starts with Collectible The Poop iconThe Poop.
  • Unlike many of the other characters, ??? does not appear in the Bible or any religious scripture. He is the first character with this distinction, and the only one to appear in the original Binding of Isaac - the second being The Lost in Rebirth.
  • The Collectible Ankh iconAnkh will resurrect any character as ???, even before he is unlocked.
  • Although "Blue Baby" is considered an unofficial nickname for ???, the character is referred to by this name in some of the game's code. One example of this is the image file for the character, named character_006_bluebaby.
  • ???'s look originally came from Dead Baby Dressup, one of Edmund McMillen's first Flash games.
  • ???'s starting health is listed as "-1" on the character selection screen.

Gallery