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Boss Mom 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
Stage The Depths icon.pngStage Necropolis icon.pngStage Dank Depths icon.png
Stage Mausoleum icon.pngStage Gehenna icon.png

Stage The Void icon.png
If an I AM ERROR room is used on The Depths/Necropolis/Dank Depths II
Table dividing line 3.png
Dropped Items
15►The Polaroid The Polaroid and 15►The Negative The Negative
If both are not unlocked, then
Boss Boss
Disambig.png This article is about the boss. For the transformation, see Yes Mother (Transformation). For other uses, see Mom (Disambiguation).

Isaac's Mom is the boss found on the second floor of the third chapter, and the final boss of the Epilogue. She is a delusional woman who believes that the hallucination she hears telling her to murder her son is the voice of God.

Added in Afterbirth † Defeating Mom for the first time causes mods to no longer disable achievements.

Behavior[edit | edit source]

Mom's fight always begins with Mom stomping in the center of the room. Four Boss Room doors will emerge on all four sides of the room, and Mom can attack from any of these doors.

She can stomp on Isaac, which is telegraphed by a growing shadow and her screaming. Mom's stomp attack can damage nearby enemies and destroy obstacles, but the foot itself does no contact damage. Added in Repentance The foot now does contact damage.

Standing too close to the doors will result in Mom striking with her hand. If the player isn't in reach and she isn't using her foot stomp attack, a piece of flesh will bulge from the doors and spawn various enemies, which can be:

Occasionally, she may stick her eye out of the door, which doesn't attack in any way and is vulnerable to being attacked by Isaac, though it will still damage him if he accidentally bumps into it.

She can only be hurt by hitting her directly when she exposes her foot, eye, flesh, or hand. Once Mom is defeated, all enemies spawned by Mom will die as well, except for Globins, which will only collapse into piles of goo that will need to be killed.

Removed in RepentanceAll of her attacks will deal a full heart of damage.

Added in RepentanceOnly Mom's stomp attack deals a full heart of damage under normal conditions, all other attacks and contact do a half heart.

Added in RepentanceMom in the Mausoleum/Gehenna[edit | edit source]

A stronger version of Mom can be fought in the second floor of the Mausoleum Mausoleum and the Gehenna Gehenna. This Mom never spawns as a Champion. The fight will start with Mom stomping in the center of the room, as usual. However, during the fight there will be more differences about her.

If Mom's eye appears in one of the doors, she will shoot 2 Brimstone laser beams towards the door on the opposite side. Although she still has her normal stomps, she may occasionally stomp on Isaac three times in a row. On the third stomp, she will send a shockwave on the cardinal directions that will damage Isaac if he is close enough. Unlike in The Depths The Depths/Necropolis Necropolis/Added in Afterbirth Dank Depths Dank Depths, Mom never uses her hand.

Mom summons other enemies during the battle when her flesh appears in one of the doors. The monsters that she spawns can be:

Upon defeat, every enemy will be killed as well, except for the Cursed Globins, which will collapse into 2 piles of goo that will need to be killed.

Champion Versions Needs to be unlocked[edit | edit source]

  • Blue: This variant has 793.4 HP (23% more), summons monsters more often and summons a different variation of enemies that were added in the Wrath of The Lamb expansion of the original game, which are:
  • Red: This variant does not summon monsters at all, and instead constantly uses her foot stomp, giving the player less time to react to it as well. Her eyes can shoot three blood shots in a spread formation at the player when they emerge, and she uses her hand much more often.

Gallery[edit | edit source]

Unlockable Achievements[edit | edit source]

  • The Womb
    The Womb - Defeat Mom.

Notes[edit | edit source]

  • Defeating Mom for the first time will change the current savefile's image.
  • Using 15►The Bible The Bible item during the Mom boss fight will kill her instantly and unlock 15►The Halo The Halo.
  • Using The High Priestess card during the fight with Mom will result in Isaac being stomped instead of the enemy with the highest health.
    • Though, if done correctly, one could kill Mom in one hit by using the card while next to Mom's leg.
  • Mom's stomp attack counts as a bomb; this means Isaac can be immune to it with 15►Pyromaniac Pyromaniac or Added in Afterbirth15►Host Hat Host Hat.
    • With Pyromaniac, Isaac can be healed when stomped.
    • Red Champion Mom is nearly impossible to lose against with Pyromaniac or Host Hat.
      • Added in RepentanceSince Mom's stomp attack now deals contact damage, this immunity has become invalid and damage will be dealt when Isaac is stomped on, regardless if he is resistant to explosions.
  • Mom cannot damage herself with her stomp attack.
  • 15►Midas' Touch Midas' Touch causes Mom's foot to be turned into gold before it lands, giving the player ample time to move out of the way and place bombs or otherwise.
  • 15►The Polaroid The Polaroid is always to the left and 15►The Negative The Negative is always to the right, in case Curse Of The Blind is active.

Trivia[edit | edit source]

  • In The Binding of Isaac: Four Souls rendition of Credit Card, the name "Magdalene O. Moriah" can be seen carved in the credit card. The name was reused on Four Souls+ rendition of Added in Afterbirth †15►Divorce Papers Divorce Papers. Edmund has confirmed that this is indeed Mom's full name.
    • Added in Repentance This is confirmed in-game during the background conversation during the Ascent.
      • The last name "Moriah" is likely a reference to the biblical location of the same name. In the bible, it is said that Moriah is where Abraham almost sacrificed his son before God sent an angel to stop his hand.
  • According to Edmund, the occupations of Mom and Dad are stay-at-home mom and handyman respectively.
  • Mom is voiced by Carla Kihlstedt.
  • Mom appeared in the original The Binding of Isaac.
    • In the original, Mom's voice was provided by Patty Allen-Scott
    • Mom's Leg originally dealt a full heart of damage.
    • Unlike in Rebirth, Mom would shout "Isaac!" whenever she exposed her eye.
  • Mom is the only final boss that has Champion variants.
  • How using the Bible kills Mom instantly is a reference on how a bible hits her head in the epilogue of the game, knocking her out or killing her.
  • During the versus screen, the "Isaac!" line from Mom can be heard, despite the battle not starting yet. She is one of seven bosses that can be heard during the versus screen; the other six are Big Horn, The Stain, The Forsaken, Mom's Heart (pre-Repentance), It Lives (pre-Repentance) and Mother.
  • If Isaac gets hurt by Mom, she will laugh.
  • The skirt she wears on her in-game sprite is difficult to see in regular play as her leg extends past the screen. Using the Added in Afterbirth †15►Dataminer Dataminer or the Added in Repentance15►Meat Cleaver Meat Cleaver can make the skirt visible.
    • Added in Afterbirth † Delirium's Mom form appears to wear a pile of flesh and organs rather than a skirt.
  • Added in Afterbirth † Prior to Booster Pack #5, Globins spawned by Mom could turn into Dank Globins if she was fought in the Dank Depths.
  • Added in Repentance When she is fought in the Mausoleum, her leg appears to be in a much more sickly state; with many varicose veins lining it.

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
Big HornRag Mega
Chapter 2.5
Stage Mines icon.pngStage Ashpit icon.png
Reap CreepTuff TwinsHornfelGreat GideonSingeThe ShellThe Pile
Chapter 3
Stage The Depths icon.pngStage Necropolis icon.pngStage Dank Depths icon.png
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
Stage The Womb icon.pngStage Utero icon.pngStage Scarred Womb icon.png
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
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