??? (boss)

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Boss Blue Baby name.png
Boss versus screen image
 
 
Table dividing line 1.png
 
In-game appearance
Table dividing line 2.png
 
Boss
Stage The Chest icon.png
Stage The Void icon.png
Table dividing line 3.png
 
Final Boss Chest
Disambig.png This article is about the boss at the end of The Chest. For the playable character, see Blue Baby. For the floor, see Blue Womb. For the pill effect, see Pills.

??? is the final boss of The Chest, accessed by defeating Isaac in the Cathedral while holding The Polaroid The PolaroidThe Polaroid Icon.pngIf the character has half a red heart or no red hearts after taking damage, it triggers the Book of Shadows effect, creating a shield that nullifies all types of damage for 5 seconds. Also allows entrance into The Chest.. He is a posthumous version of Isaac.

Behavior[edit | edit source]

During all three of ???'s phases, he will always shoot multiple tears in the player's direction at fixed intervals. These tears can be double tears and have a small chance to be homing tears.

??? will not begin attacking the player until he takes damage.

Phase 1

  • Shoots rapid-fire lines of tears that curve as they move.
  • Shoots rapid-fire lines of tears in eight directions with varying intensity and speed.

Phase 2

Phase 3

  • Spawns flies more aggressively.
  •  ??? will teleport at a distance in front of the player, either in the last direction he was moving, or directly onto the player if he didn't move at all. ??? will not teleport if he is slowed (e.g. with a Stop Watch Stop WatchStop Watch Icon.pngRemoved in Afterbirth Automatically inflicts slow to all enemies in every room.
    Added in  Afterbirth Upon taking damage, inflicts slow to all enemies for the current room.
    ).
  • Shoots rapid-fire lines of tears that curve as they move.

Gallery[edit | edit source]

Unlockable Items[edit | edit source]

  • Golden God!
    Golden God! - Defeat ??? and The Lamb for the 1st time.

In addition, beating ??? with a particular character for the first time will place a Polaroid Completion Mark on that character's post-it note.

Trivia[edit | edit source]

  • ??? was added in the Wrath of the Lamb DLC for the original The Binding of Isaac.
  • The music that plays during this boss fight is titled Ascension.[1] The term "ascend" is typically used in religion as the act of one's soul rising to Heaven.
  •  ???, along with Isaac, are the only two bosses who do not "die" upon losing all their health. Instead, ??? teleports away and the battle ends.
  •  ??? is commonly referred to as the 'blue baby' by the Binding of Isaac community, as well as Steam Achievements.
  • An identical ??? fight, with identical behavior and music, is used as the first phase of Hush, using a different sprite. The Hush version also has half the HP.
  •  ??? is one of the only bosses who's one of Delirium's forms that doesn't have any melted features, along with both of the angels.

References[edit | edit source]


Bosses Boss Monstro.png
Chapter 1
Stage The Basement icon.pngStage The Cellar icon.pngStage Burning Basement icon.png
Blighted OvumDingleThe Duke of FliesFamineFistulaGeminiGurglingsThe HauntLarry Jr.MonstroPinStevenWidowThe FallenThe Headless Horseman
Added in  Afterbirth DangleLittle HornRag ManTurdlings
Chapter 2
Stage The Caves icon.pngStage The Catacombs icon.pngStage Flooded Caves icon.png
Carrion QueenC.H.A.D.ChubDark OneGurdyGurdy Jr.The HollowThe HuskMega FattyMega MawPeepPestilencePolycephalusThe WretchedThe FallenThe Headless Horseman
Added in  Afterbirth The ForsakenThe FrailThe Stain
Added in Afterbirth † Big HornRag Mega
Chapter 3
Stage The Depths icon.pngStage Necropolis icon.pngStage Dank Depths icon.png
The AdversaryThe BloatThe CageThe GateGishLokiMask Of InfamyMonstro IIWarThe FallenThe Headless HorsemanMom
Added in  Afterbirth Brownie
Added in Afterbirth † Sisters Vis
Chapter 4
Stage The Womb icon.pngStage Utero icon.pngStage Scarred Womb icon.png
BlastocystThe BloatConquestDaddy Long LegsDeathLokiiMama GurdyMr. FredScolexTeratomaTriachnidThe FallenThe Headless HorsemanMom's HeartIt Lives
Added in Afterbirth † Sisters VisThe Matriarch
Added in  Afterbirth Blue Womb
???
Added in  Afterbirth Hush
Chapter 5
Stage Sheol icon.pngStage Cathedral icon.png
SatanIsaac
Chapter 6
Stage Dark Room icon.pngStage The Chest icon.png
???The LambMega Satan
Added in Afterbirth † The Void
Stage The Void icon.png
Added in Afterbirth † Delirium
Added in  Afterbirth Greed Mode
Ultra Greed
Added in  Afterbirth Ultra Greed
Added in Afterbirth † Ultra Greedier
The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth
Achievements Achievements Attributes Attributes Bosses Bosses TarotCard.png Cards and Runes Challenges Challenges Chapters Chapters
Characters Characters MainPageBabies.png Co-op Items Items Item pools Item pools Monsters Monsters Objects Objects
Pickups Pickups Pills Pills Rooms Rooms Seeds Seeds Transformations Transformations Trinkets Trinkets