Blue Baby

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 ???
Blue Baby App.png
Stats
Health Stat Icon.png Health HUD Soul Heart.pngHUD Soul Heart.pngHUD Soul Heart.png
Damage Stat Icon.png Damage 3.5(*1.05)
Tears Stat Icon.png Tears 1
Shot Speed Stat Icon.png Shot Speed 1
Range Stat Icon.png Range 23.75
Speed Stat Icon.png Speed 1.1
Luck Stat Icon.png Luck 0
Starting Items
Starting Item Icon.png Pickups None
Starting Item Icon.png Items The Poop The Poop
Unlocked By
??? Defeat Mom's Heart 10 times ???  ??? ???  ???
Disambig.png This article is about the playable character. For the boss at the end of The Chest, see ??? (Boss). For the floor, see Blue Womb. For the pill effect, see Pills.

???, 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, it adds a Soul Heart instead.

Unlockable items[edit | edit source]

Item & Strategy Notes[edit | edit source]

Positive[edit | edit source]

  • Abaddon 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.
  • Ankh is effectively a 1up! for ???.
  • DLC Indicator.png Athame can be used to produce black hearts upon taking damage.
  • Balls of Steel Pills or The Hierophant grant two soul hearts, both of which are more useful than normal HP up items.
  • Ceremonial Robes costs three Soul Hearts and grants three Black Hearts and damage up. Like Abaddon, this item is always safe to take.
  • Daemon's Tail replaces useless Red Hearts with Black Hearts.
  • Dark Bum converts useless Red Hearts into Soul Hearts and spiders.
  • Gimpy has a chance to spawn Soul Hearts when hit.
  • Lazarus' 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.
  • DLC Indicator.png Maw of the Void can produce black hearts.
  • Midas' Touch makes The Poop create golden poop.
  • Mitre makes soul heart pickups more common.
  • Monkey Paw will drop 3 Black Hearts, but must take damage for each one to spawn.
  • Petrified Poop is useful early on to get more pickups from The Poop every room.
  • Pyromaniac makes ??? immune to all explosions.
  • The Polaroid and The Negative always activate when taking damage.
  • The Relic, which is generally useful, is especially useful to ??? as it spawns Soul Hearts.
  • Satanic Bible generates Black Hearts.
  • DLC Indicator.png Serpent's Kiss can produce black hearts by poisoning enemies.
  • Squeezy and DLC Indicator.png Mr. Dolly increase ???'s tears and can grant soul hearts.
  • Whore of Babylon is always active.

Negative[edit | edit source]

  • Items that directly add Red Hearts to the health bar, such as Yum Heart or full health pills, are useless.
  • Blood Banks and Devil Beggars are riskier, as they deplete health that is harder to replenish.
  • If ??? has only one heart, Experimental Treatment has a chance to be lethal.
  • Little Chad is useless, unless paired with Dark Bum, where it becomes very useful.
  • Dead Cat will remove all but one Soul Hearts. However, it can be used as a last resort if you are running very low on Soul Hearts.
  • 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 in order to get credit towards the Guppy transformation).
  • Judas' Tongue doesn't lower the price of soul heart devil deals.
  • Cursed Skull will automatically teleport ??? out of the room upon taking any damage, as he doesn't have any Red Hearts.
  • Glass 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.
  • Any extra life item's that transform you, such as Judas' Shadow and Lazarus' Rags as well as the Missing Poster Trinket are to be avoided as not to change into another character.

Notes[edit | edit source]

  • 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.
  • The Poop - While not the most glamorous 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 (with the exception of 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).

Trivia[edit | edit source]

  •  ??? appears 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 Brother Bobby. ??? was Edmund's mascot from 1996-2002.
  • In several cutscenes, Isaac is depicted suffocating inside a chest. ??? first appears 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 The Poop
  • Unlike many of the other characters, ??? does not appear in the Bible or any religious scripture.
  • The Ankh 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 the some of the game's code. One example of this is the image file for the character, named 'character_006_bluebaby'

Gallery[edit | edit source]

Characters
Rebirth Afterbirth Afterbirth †

Isaac CharNav.png Magdalene CharNav.png Cain CharNav.png Judas CharNav.png BlueBaby CharNav.png Eve CharNav.png Samson CharNav.png Azazel CharNav.png Lazarus CharNav.png Eden CharNav.png Lost CharNav.png

Lilith CharNav.png Keeper CharNav.png

Apollyon CharNav.png

SmallIsaac.png The Binding of Isaac: Rebirth SmallIsaac.png

MainPageAchievements.png Achievements MainPageAttributes.png Attributes MainPageBosses.png Bosses TarotCard.png Cards and Runes MainPageChallenges.png Challenges MainPageChapters.png Chapters
Isaac App.png Characters MainPageBabies.png Co-op Magic Mushroom Icon.png Items Isaac's Tears Icon.png Item Pools MainPageMonsters.png Monsters MainPageObjects.png Objects
Red heart.png Pickups BlueBlue.png Pills MainPageRooms.png Rooms MainPageSeeds2.png Seeds Guppy App.png Transformations The Left Hand Icon.png Trinkets