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Boss Hush name.png
Boss versus screen image
Base HPStage HP
Table dividing line 1.png
Ingame Appearance
In-game appearance

Entity ID
Table dividing line 2.png
Found In
Table dividing line 3.png
Dropped Items
Final Boss Chest (First kill only)
Gateway to Sheol Sheol/Cathedral Cathedral (Subsequent kills)
Added in Afterbirth † Entrance to The Void The Void (Subsequent kills)
Unlock Method
Blue Womb Defeat Mom's Heart 10 times
Added in Afterbirth

Hush is the boss of ??? ???, and the final boss of Ending 17.

Behavior[edit | edit source]

Phase 1[edit | edit source]

Hush begins with a fight identical to the ??? fight, having the same attacks and behavior but with a different appearance, half of ???'s health and fought in a 2×2 room.

Phase 2[edit | edit source]

After Hush's first form is defeated, it reveals its large true form at the top of the room, taking the form of its splash screen portrait.

  • During this phase Hush occasionally sinks into the ground, becoming non-attacking, and invulnerable and only returning once most of the projectiles onscreen have dissipated. It performs this move every time it loses around 20% HP and also in conjunction with some of its later attacks.

Phase 2-1 (100-80% HP)[edit | edit source]

Hush remains stationary in the top center of the room and performs the following attacks:

  • Fires barrages of yellow, blue, and green glowing projectiles in certain patterns, combining 1-3 different patterns of projectiles . These patterns include:
    • Rings of projectiles that alternate between rotating clockwise and counterclockwise as they move outwards.
    • U-shaped salvos aimed at Isaac.
    • Lines of projectiles aimed at Isaac that either gain (yellow), lose (blue), or maintain (green) momentum as they travel (these lines have spaces between them every 4-5 shots).
    • 2-4 repeating volleys of 4 projectiles, with equal spacing between each volley (the angle these volleys are shot out at rotates as the attack continues).

The same pattern can be used multiple times in each barrage, and projectile patterns become less dense if multiple patterns are used in the same barrage.

Phase 2-2 (80-60% HP)[edit | edit source]

Hush sinks into the ground and relocates to the center of the room before resuming its attacks. It also gains an attack and two more shot patterns:

  • Hush's projectile barrage can include two new patterns:
    • A very dense ring of projectiles with a gap, aimed somewhere towards Isaac's general direction.
    • 3-5 spirals of projectiles, with even spacing between each spiral (projectiles from these spirals initially lose momentum, but after a few seconds they resume their normal speed while rotating counterclockwise as they move out).
  • Spawns a cluster of Hush Flies that either orbit Hush, launch towards Isaac's position and fly off-screen, or actively chase Isaac. These flies have invincibility for a short time after being spawned, and alternate between forming the shapes of a circle, triangle, square, pentagon, or a 5 or 6-pointed star.

Phase 2-3 (60-40% HP)[edit | edit source]

Hush keeps its attacks from previous phase and gains two more attacks and an extra shot pattern:

  • Hush’s projectile barrage can now also include a very wide spread of projectiles that closes in on where Isaac was standing when fired.
  • Hush spawns a horde of Blue Gapers, before sinking into the ground to relocate. While relocating, Hush can summon Blue Boils.
  • Hush fires three rows of wavy 15►Continuum Continuum projectiles in one of the cardinal directions, which warp over to the other side of the screen and increase in speed the longer they travel. Hush performs this attack 2-5 times before using a different one. These projectiles move in a set pattern and leave safe zones that last the entire barrage.

Phase 2-4 (40-20% HP)[edit | edit source]

Hush keeps its attacks from previous phases, gains an extra attack, and modifies its shot patterns:

  • Hush sinks into the ground while firing its projectile barrages, moving in a random direction or chasing Isaac as it fires, and spawning Blue Boils as it moves. Only shot patterns from phase 2-1 can be used; the patterns added in phase 2-2 and 2-3 are lost.
  • Hush creates three large red projectiles that move outward and split rapidly into numerous smaller projectiles. Hush can start other attacks before the projectiles from this attack fully dissipate.

Phase 2-5 (<20% HP)[edit | edit source]

Hush keeps most of its attacks from previous phases but loses its ability to spawn Hush Flies. It gains one more attack in this phase and has a greatly reduced attack delay when at <1% health:

  • Hush fires two laser beams upward from its eyes, which creates beams on the ground that move toward Isaac and leave trails of slippery Blue Creep. The speed at which the beams move is based on Isaac's speed stat, and are always possible to outmaneuver. While firing these lasers, Hush also releases five wavy, slow-moving lines of projectiles in all directions.

Gallery[edit | edit source]

Unlockable Achievements[edit | edit source]

Damage Scaling[edit | edit source]

Damage scaling is an unclear mechanic introduced by Nicalis in The Binding of Isaac: Afterbirth to provide a more challenging experience to the players, enabling some enemies to retaliate against high damage attacks by deploying an "armor" of a sort to greatly reduce the amount of damage taken. Further details and an in-depth explanation may be found here.

Notes[edit | edit source]

  • Defeating Hush for the first time spawns a Final Boss Chest. Moving into the chest unlocks Ending 17 and ends the run.
  • Using the Emergency Contact on Hush's second form appears to lower its damage resistance by 50% for approximately 5 seconds.
  • It is possible but not recommended to fight Hush in challenges.
  • Removed in Repentance If Hush is killed for the first time and The Void The Void unlocked, Isaac can exit the room and come back in, and the entrance to The Void will appear without having to fight Hush again on a new run.
  • Added in RepentanceDefeating Hush's First Form (which is a copy of ???) counts towards unlocking A Secret Exit A Secret Exit, allowing the player to unlock Repentance's Alternative Floors without unlocking The Polaroid.

Trivia.[edit | edit source]

  • According to Edmund on Twitter, Hush represents Isaac's imminent death slowly approaching towards him, which is the reason why Hush and ??? are the same thing, since ??? represents Isaac suffocating in the chest.
  • In its first form (the replica of the ??? fight), "Ascension" plays while in its second form, the name of the boss theme is "Morituros".
    • Morituros in Latin is the accusative masculine plural for 'about to die', which roughly translates to "those who will die".
  • Hush is one of only two bosses in the game with a Boss Room scaled in a 2x2 fashion, the other being Delirium.
  • There is an unused file in the game named "boss_hush_skinless" which appears to be an unfinished sprite sheet for the unreleased third form of Hush. It resembles a red, fleshy version of the head of The Forsaken. This was confirmed by Edmund to be "a red herring for dataminers."
  • Hush shares his name with a level from Edmund's previous game Super Meat Boy.
  • Hush's boss room gradually becomes darker as Hush loses health.
  • When defeated, Hush screams and disappears in a flash of light. The ground where it once was becomes scorched in a shape resembling a distressed face.

Bugs[edit | edit source]

Bug Bug! If Delirious is used in phase 2 of the Hush fight and Delirium is killed, The Calm (music usually played after defeating a boss) will replace Morituros.
Bug Bug! Having the No Return seed enabled when going to Hush will result in no doors being available, softlocking the run.

Bosses Boss Monstro.png
Chapter 1
Stage The Basement icon.pngStage The Cellar icon.pngStage Burning Basement icon.png
GeminiStevenBlighted OvumDingleThe Duke of FliesFamineGurglingsThe HauntLarry Jr.MonstroPinWidowThe FallenThe Headless Horseman
DangleLittle HornRag ManTurdlings
Baby Plum
Chapter 1.5
Stage Downpour icon.pngStage Dross icon.png
Lil BlubWormwoodThe RainmakerMin-MinClogColostomiaTurdlet
Chapter 2
Stage The Caves icon.pngStage The Catacombs icon.pngStage Flooded Caves icon.png
FistulaChubC.H.A.D.Carrion QueenDark OneGurdyGurdy Jr.The HollowThe HuskMega FattyMega MawPeepPestilencePolycephalusThe WretchedThe FallenThe Headless Horseman
The ForsakenThe FrailThe Stain
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Chapter 2.5
Stage Mines icon.pngStage Ashpit icon.png
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Chapter 3
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The AdversaryThe BloatThe CageThe GateMonstro IIGishLokiMask of InfamyWarThe FallenThe Headless HorsemanMom
Sisters Vis
Reap CreepThe Pile
Chapter 3.5
Stage Mausoleum icon.pngStage Gehenna icon.png
The SirenThe HereticThe VisageThe Horny BoysMomMom's Heart
Chapter 4
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BlastocystThe BloatConquestDaddy Long LegsTriachnidDeathLokiiMama GurdyMr. FredScolexTeratomaThe FallenThe Headless HorsemanMom's HeartIt Lives
Sisters VisThe Matriarch
Stage Corpse icon.png
ChimeraThe ScourgeRotgutMother
Chapter 5
Stage Sheol icon.pngStage Cathedral icon.png
Chapter 6
Stage Dark Room icon.pngStage The Chest icon.png
???The LambMega Satan
The Void
Stage The Void icon.png
Stage Home icon.png
DogmaThe BeastUltra DeathUltra FamineUltra PestilenceUltra War
Greed Mode
Ultra Greed
Ultra Greed
Ultra Greedier
The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth
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