Binding of Isaac: Rebirth Wiki
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This article is about the main player character. For the additional multiplayer characters, see Babies. For non-player characters, see NPCs.

There are 34 playable characters in The Binding of Isaac: Rebirth, with 11 available in the base game and 23 available in the DLCs. Five of these characters ( Character Isaac iconIsaac, Character Magdalene iconMagdalene, Character Cain iconCain, Character Judas iconJudas, and Character ??? (Character) icon???) came with the original The Binding of Isaac, while two additional characters ( Character Eve iconEve and Character Samson iconSamson) were added later. Eve was added in The Binding of Isaac's Halloween Update, while Samson was added in the Wrath of the Lamb expansion. Rebirth contains four new characters ( Character Azazel iconAzazel, Character Lazarus iconLazarus, Character Eden iconEden, and Character The Lost iconThe Lost). In the Afterbirth expansion, one new character ( Character Lilith iconLilith) was added, plus one more character via an update ( Character Keeper iconKeeper). In the Afterbirth † expansion, one character ( Character Apollyon iconApollyon) was added, plus one more secret character ( Character The Forgotten iconThe Forgotten) added via a Booster Pack. In the Repentance expansion, two characters ( Character Bethany iconBethany and Character Jacob and Esau iconJacob and Esau) were added. Each character starts with different stats and abilities that give them their own unique playstyle.

Repentance also added an alternate 'tainted' version of all 17 characters, unlockable in the expansion's final endgame area. Each tainted character maintains the same general theme as the original incarnation, but twisted or taken to an extreme. Many have unique, game-changing mechanics, but often come with a corresponding drawback. Tainted characters have their own set of completion marks and corresponding unlocks, albeit fewer than the original characters — a single unlock for both of the timed challenges (Boss Rush and Hush), one for all of the main path bosses (Isaac, ???, Satan, and The Lamb), and one for each endgame boss, excluding 'normal' Ultra Greed.

Each character's progress can be gauged by checking their completion marks.

Character Rebirth Afterbirth Afterbirth † Repentance
Isaac App
Character Isaac iconIsaac
Magdalene App
Character Magdalene iconMagdalene
Cain App
Character Cain iconCain
Judas App
Character Judas iconJudas
Blue Baby App
Character ??? (Character) icon???
Eve App
Character Eve iconEve
Samson App
Character Samson iconSamson
Azazel App
Character Azazel iconAzazel
Lazarus App
Character Lazarus iconLazarus
Eden App
Character Eden iconEden
The Lost App
Character The Lost iconThe Lost
Lilith App
Character Lilith iconLilith
Keeper App
Character Keeper iconKeeper
Apollyon App
Character Apollyon iconApollyon
The Forgotten App
Character The Forgotten iconThe Forgotten
Bethany App
Character Bethany iconBethany
Jacob App
Character Jacob and Esau iconJacob and Esau
Judas Character Dark Judas iconDark Judas Lazarus Character Lazarus Risen iconLazarus Risen The Forgotten Character The Soul (Character) iconThe Soul Character Jacob iconJacob Character Esau iconEsau
Health Stat Icon Health Full red heartFull red heartFull red heart Full red heartFull red heartFull red heartFull red heart Full red heartFull red heart Full red heart Full black heartFull black heart Full soul heartFull soul heartFull soul heart Full red heartFull red heart Full red heartFull red heartFull red heart Full black heartFull black heartFull black heart Full red heartFull red heartFull red heart Full red heart Random No health Full red heartFull black heartFull black heart Full coin heartFull coin heartNeeds to be unlocked(in Repentance)Full coin heart Full red heartFull red heart Full bone heartFull bone heart Full soul heart Full red heartFull red heartFull red heart Full red heartFull red heartFull red heart Full red heartFull soul heart
Damage Stat Icon Damage 3.5 (*1.00) 3.5 (*1.00) 3.5 (*1.20) 3.5 (*1.35) 3.5 (*2.00) 3.5 (*1.05) 3.5 (*0.75)
(*1.00 at Full red heart)
3.5 (*1.00) 3.5 (*1.50) 3.5 (*1.00) (except in Repentance) 3.5 (*1.20)
(in Repentance) 3.5 (*1.40)
3.5 ± 1.0 (*1.00) 3.5 (*1.00) 3.5 (*1.00) 3.5 (*1.20) 3.5 (*1.00) 3.5 (*1.50) 3.5 (*1.00) 3.5 (*1.00) 2.75 (*1.00) 3.75 (*1.00)
Tears Stat Icon Tears +0 +0 +0 +0 +0 +0 +0 -0.1 +0.5, x0.267 +0 +0 (except in Repentance) ±0.75
(in Repentance) +0.75 to -0.5
+0 +0 (except in Repentance) -2
(in Repentance) -1.9
+0 +0, x1/2 +0 +0 +0.277 -0.1
Shot Speed Stat Icon Shot Speed 1 1 1 1 1 1 1 1.31 1 1 1 1 ± 0.25 1 1 1 1 1 1 1 1.15 0.85
Range Stat Icon Range 6.5
(except in Repentance) 23.75
6.5
(except in Repentance) 23.75
4.5
(except in Repentance) 17.75
6.5
(except in Repentance) 23.75
6.5
(except in Repentance) 23.75
6.5
(except in Repentance) 23.75
6.5
(except in Repentance) 23.75
5.0
(except in Repentance) 18.75
4.5
(except in Repentance) 17.75
4.5
(except in Repentance) 17.75
6.5
(except in Repentance) 23.75
6.5 ± 1.5
(except in Repentance) 23.75 ± 5.00
6.5
(except in Repentance) 23.75
6.5
(except in Repentance) 23.75
6.5
(except in Repentance) 23.75
6.5
(except in Repentance) 23.75
6.5
(except in Repentance) 23.75
6.5
(except in Repentance) 23.75
6.5 5 8
Speed Stat Icon Speed 1.0 0.85 1.3 1.0 1.1 1.1 1.23 1.1 1.25 1.0 1.25 1.0 ± 0.15 1.0 1.0 (except in Repentance) 0.85
(in Repentance) 0.9
1.0 1.0 1.3 1.0 1.0 1.0
Luck Stat Icon Luck 0 0 0 0 0 0 0 0 0 -1 0 0 ± 1 0 0 -2 0 0 0 +1 -1
Starting Item Icon Starting Pickup(s) x1 bombs (in Repentance) Needs to be unlocked x1 Full Health pill
(in Afterbirth †) Needs to be unlocked x1 Speed Up pill
x1 key,
(except in Rebirth) Needs to be unlocked Paper ClipPaper Clip
x3 coins None None None (in Afterbirth † and Repentance) Needs to be unlocked Child's HeartChild's Heart 0 - The Fool0 - The Fool x1 pills None x0-2 bombs
x0-1 keys
x0-5 coins
x0-1 trinket, pill, or card
x1 coins None x1 bombs
Needs to be unlocked x1 coins
Needs to be unlocked (except in Rebirth)Store KeyStore Keys
None None x4 soul charges None None
Starting Item Icon Starting Item(s) Needs to be unlocked Collectible The D6 iconThe D6 Collectible Yum Heart iconYum Heart Collectible Lucky Foot iconLucky Foot Collectible The Book of Belial iconThe Book of Belial None Collectible The Poop iconThe Poop Collectible Whore of Babylon iconWhore of Babylon

Collectible Dead Bird iconDead Bird

(except in Rebirth) Needs to be unlocked Collectible Razor Blade iconRazor Blade
Collectible Bloody Lust iconBloody Lust Short range Collectible Brimstone iconBrimstone

Flight
(in Rebirth and Afterbirth) None

(in Afterbirth † and Repentance) Needs to be unlocked Collectible Anemic iconAnemic
Collectible Anemic iconAnemic

(in Afterbirth † and Repentance) Needs to be unlocked A permanent version of Collectible Anemic iconAnemic
Random active item

Random passive item
Flight

(except in Rebirth) Spectral tears

(in Afterbirth and Afterbirth †) Needs to be unlocked Collectible D4 iconD4

(in Repentance) Collectible Eternal D6 iconEternal D6

(except in Rebirth) Needs to be unlocked Collectible Holy Mantle iconHoly Mantle
BlindfoldedBlindfolded

(except in Rebirth)Collectible Incubus iconIncubus

(except in Rebirth)Collectible Cambion Conception iconCambion Conception

(except in Rebirth)Collectible Box of Friends iconBox of Friends
Triple shot

Needs to be unlocked (except in Rebirth)Collectible Wooden Nickel iconWooden Nickel
(in Afterbirth † and Repentance)Collectible Void iconVoid Bone club Flight

Spectral tears
(in Repentance)Collectible Book of Virtues iconBook of Virtues None None
Achievements
Boss Rush Isaac's Head Maggy's Bow Cain's Other Eye Judas' Shadow ???'s Only Friend Eve's Mascara Samson's Chains The Nail Missing No. Undefined The D100 Immaculate Conception Sticky Nickels Locust of Conquest Divorce Papers Beth's Faith Rock Bottom
Hard mode only Mom's Heart Lost Baby Cute Baby Glass Baby Shadow Baby Dead Baby Crow Baby Fighting Baby Begotten Baby Wrapped Baby Glitch Baby -0- Baby Goat Head Baby Super Greed Baby Smelter Marrow Wisp Baby Double Baby
Satan Mom's Knife Guardian Angel A Bag of Bombs Judas' Tongue Forget Me Now The Razor Blood Rights Daemon's Tail Broken Ankh Book of Secrets The Mind Serpent's Kiss Keeper holds Store Key Locust of Pestilence Pointy Rib Urn of Souls Red Stew
Isaac Isaac's Tears A Cross A Bag of Pennies Guillotine The D6 Eve's Bird Foot Bloody Lust Satanic Bible Lazarus' Rags Blank Card Isaac's Heart Rune Bag Keeper holds Wooden Nickel Locust of Wrath Slipped Rib Book of Virtues The Stairway
The Lamb Missing Poster Maggy's Faith Abel Curved Horn ???'s Soul Black Lipstick Samson's Lock Demon Baby Pandora's Box Mystery Sack The Soul Succubus Karma Locust of Death Brittle Bones Alabaster Box Damocles
??? The D20 Celtic Cross Cain's Eye The Left Hand Fate Sacrificial Dagger Blood Penny Abaddon Store Credit Mysterious Paper The Body Cambion Conception Deep Pockets Locust of Famine Jaw Bone Blessed Penny Birthright
Greed and greedier modes only Ultra Greed (except in Rebirth) Lil' Chest Censer Evil Eye My Shadow Cracked Dice Black Feather Lusty Blood Lilith Key Bum GB Bug Zodiac Box of Friends Rib of Greed Brown Nugget Finger Bone Soul Locket Inner Child
Greedier mode only Ultra Greedier (in Afterbirth † and Repentance) D1 Glyph of Balance Sack of Sacks Eye of Belial Meconium Crow Heart Stem Cell Bat Wing Plan C Metronome Dad's Lost Coin Duality Eye of Greed Black Rune Dad's Ring Vade Retro Genesis
Hush (except in Rebirth) Fart Baby Purity D12 Betrayal Fate's Reward Athame Blind Rage Maw of the Void Empty Vessel Eden's Blessing Sworn Protector Incubus Keeper now holds.. Hushy Hallowed Ground Divine Intervention Vanishing Twin
Delirium (in Afterbirth † and Repentance) D Infinity Eucharist Silver Dollar Shade King Baby Dull Razor Bloody Crown Dark Prince's Crown Compound Fracture Eden's Soul Holy Card Euthanasia Crooked Penny Void Book of the Dead Star of Bethlehem Suplex!
Mother (in Repentance) Meat Cleaver Yuck Heart Guppy's Eye Akeldama Eternal D6 Bird Cage Bloody Gust Devil's Crown Tinytoma 'M Lost Soul Blood Puppy Keeper's Sack Lil Portal Bone Spurs Revelation Magic Skin
The Beast (in Repentance) Options? Candy Heart A Pound of Flesh Redemption Montezuma's Revenge Cracked Orb Empty Heart Lil Abaddon Astral Projection Everything Jar Hungry Soul C Section Keeper's Box Worm Friend Spirit Shackles Jar of Wisps Friend Finder
Mega Satan (except in Rebirth) Cry Baby Red Baby Green Baby Brown Baby Blue Baby Lil' Baby Rage Baby Black Baby Long Baby Yellow Baby White Baby Big Baby Noose Baby Mort Baby Bound Baby Glowing Baby Illusion Baby
Hard mode only All Marks completed (except in Rebirth) Buddy Baby Colorful Baby Picky Baby Belial Baby Hive Baby Whore Baby Revenge Baby Sucky Baby Dripping Baby Cracked Baby Godhead Dark Baby Sale Baby Apollyon Baby Bone Baby Hope Baby Solomon's Baby

Character Repentance
Tainted Isaac App
Character Tainted Isaac iconTainted Isaac
Tainted Magdalene App
Character Tainted Magdalene iconTainted Magdalene
Tainted Cain App
Character Tainted Cain iconTainted Cain
Tainted Judas App
Character Tainted Judas iconTainted Judas
Tainted Blue Baby App
Character Tainted ??? iconTainted ???
Tainted Eve App
Character Tainted Eve iconTainted Eve
Tainted Samson App
Character Tainted Samson iconTainted Samson
Tainted Azazel App
Character Tainted Azazel iconTainted Azazel
Tainted Lazarus App
Character Tainted Lazarus iconTainted Lazarus
Character Tainted Eden appearance
Character Tainted Eden iconTainted Eden
Tainted Lost App
Character Tainted Lost iconTainted Lost
Tainted Lilith App
Character Tainted Lilith iconTainted Lilith
Tainted Keeper App
Character Tainted Keeper iconTainted Keeper
Tainted Apollyon App
Character Tainted Apollyon iconTainted Apollyon
Tainted Forgotten App
Character Tainted Forgotten iconTainted Forgotten
Tainted Bethany App
Character Tainted Bethany iconTainted Bethany
Tainted Jacob App
Character Tainted Jacob iconTainted Jacob
Tainted Lazarus Character Dead Tainted Lazarus iconDead Tainted Lazarus Tainted Forgotten Character Tainted Soul iconTainted Soul
Health Stat Icon Health Full red heartFull red heartFull red heart Full red heartFull red heartEmpty red heartEmpty red heart Full red heartFull red heart Full black heartFull black heart Full soul heartFull soul heartFull soul heart Full red heartFull red heart Full red heartFull red heartFull red heart Full black heartFull black heartFull black heart Full red heartFull red heartFull red heart Full soul heartFull soul heart Random No Health Full red heartFull black heartFull black heart Full coin heartFull coin heart Full red heartFull red heart No Health Full soul heartFull soul heartFull soul heart Full soul heartFull soul heartFull soul heart Full red heartFull red heartFull red heart
Damage Stat Icon Damage 3.5 (*1.00) 3.5 (*0.75) 3.5 (*1.20) 3.5 (*1.00) 3.5 (*1.00) 3.5 (*1.20) 3.5 (*1.00) 3.5 (*1.50) 3.5 (*1.00) 3.5 (*1.50) 3.5 ± 1.0 (*1.00) 3.5 (*1.30) 3.5 (*1.00) 3.5 (*1.00) 3.5 (*1.00) 3.5 (*1.50) 3.5 (*1.00) 3.5 (*1.00)
Tears Stat Icon Tears +0 +0 +0 +0 -0.35 -0.5, x0.66 -0.1 +0, x1/3 +0 -0.1 +0.75 to -0.5 +0 +0 -2.2 -0.5 +0, x1/2 +0 +0.277
Shot Speed Stat Icon Shot Speed 1 1 1 1 1 1 1 1 1 1 1 ± 0.25 1 1 1 1 1 1 1
Range Stat Icon Range 6.5 6.5 4.5 4.5 6.5 6.5 5 6.5 4.5 6.5 6.5 ± 1.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5
Speed Stat Icon Speed 1.0 1.0 1.3 1.23 0.9 1.0 1.0 1.0 1.0 0.90 1.0 ± 0.15 1.0 0.85 1.0 1.0 1.09 1.0 1.0
Luck Stat Icon Luck 0 0 0 0 0 0 0 0 0 -2.00 0 ± 1 0 0 -2.00 0 0 0 0
Starting Item Icon Starting Pickup(s) 1 bomb None 1 key 3 coins 3 Poop bombs None None 0 - The Fool0 - The Fool None None 0-2 bombs
0-1 key
0-5 coins
0-1 trinket, pill, or card
1 coin
Holy CardHoly Card
None 1 bomb None None None 6 blood charges None
Starting Item Icon Starting Item(s) None Collectible Yum Heart iconYum Heart Collectible Bag of Crafting iconBag of Crafting Collectible Dark Arts iconDark Arts Collectible Hold iconHold Collectible Sumptorium iconSumptorium None None Collectible Flip iconFlip Collectible Flip icon 2Flip Random active item
Random passive item
Flight
Spectral tears
Demonic baby attack None Collectible Abyss iconAbyss Bone club Flight Collectible Lemegeton iconLemegeton Collectible Anima Sola iconAnima Sola
Achievements
Hush and Boss Rush Soul of Isaac Soul of Magdalene Soul of Cain Soul of Judas Soul of ??? Soul of Eve Soul of Samson Soul of Azazel Soul of Lazarus Soul of Eden Soul of the Lost Soul of Lilith Soul of the Keeper Soul of Apollyon Soul of the Forgotten Soul of Bethany Soul of Jacob and Esau
Isaac, ???, Satan, and The Lamb Mom's Lock Holy Crown Gilded Key Your Soul Dingle Berry Strange Key Temporary Tattoo Wicked Crown Torn Pocket Nuh Uh! Kid's Drawing The Twins Keeper's Bargain Cricket Leg Polished Bone Expansion Pack RC Remote
Greedier mode only Ultra Greedier The Stars The Lovers Wheel of Fortune The Magician The Emperor The Empress Strength The Devil Judgement The World The Fool The High Priestess The Hanged Man The Tower Death The Hierophant The Sun and the Moon
Delirium Spindown Dice Hypercoagulation Bag of Crafting Dark Arts IBS Sumptorium Berserk! Hemoptysis Flip Corrupted Data Ghost Bombs Gello Keeper's Kin Abyss Decap Attack Lemegeton Anima Sola
Mother Dice Bag Mother's Kiss Lucky Sack Number Magnet Ring Cap Lil Clot Swallowed M80 Azazel's Stump Torn Card Modeling Clay Crystal Key Adoption Papers Cursed Penny Apollyon's Best Friend Hollow Heart Beth's Essence Found Soul
The Beast Glitched Crown Belly Jelly Blue Key Sanguine Bond The Swarm Heartbreak Larynx Azazel's Rage Salvation TMTRAINER Sacred Orb Twisted Pair Strawman Echo Chamber Isaac's Tomb Vengeful Spirit Esau Jr.
Mega Satan Mega Chest Queen of Hearts Gold Pill Black Sack Charming Poop Horse Pill Crane Game Hell Game Wooden Chest Wild Card Haunted Chest Fool's Gold Golden Penny Rotten Beggar Golden Battery Confessional Golden Trinket

Unlocking[ | ]

Each character is unlocked by accomplishing a certain task in the game. The unlock requirements are as follows:

Character Unlock requirement
Character Isaac iconIsaac None; unlocked by default
Character Magdalene iconMagdalene Magdalene Have 7 or more Red HeartRed Heart Containers at one time
Character Cain iconCain Cain Hold 55 Coins at one time
Character Judas iconJudas Judas Defeat Boss Satan ingameSatan
Character ??? (Character) icon??? ??? Defeat Mom's Heart 10 times
Character Eve iconEve Eve Don't pick up any Hearts for 2 floors in a row
Character Samson iconSamson Samson Complete 2 floors in a row without taking damage
Character Azazel iconAzazel Azazel Make 3 Deals with the Devil in one run
Character Lazarus iconLazarus Lazarus Have 4 or more Soul Hearts at one time
Character Eden iconEden Eden Complete Chapter 4
Character The Lost iconThe Lost The Lost (in Rebirth) It's complicated
(except in Rebirth) Die in a Sacrifice RoomSacrifice Room while holding Missing PosterMissing Poster
(except in Rebirth) Character Lilith iconLilith Lilith Defeat Ultra Greed as Character Azazel iconAzazel
(except in Rebirth) Character Keeper iconKeeper Keeper Donate 1000 Coins to the Greed Donation MachineGreed Donation Machine
(in Afterbirth † and Repentance) Character Apollyon iconApollyon Apollyon Defeat Mega Satan
(in Afterbirth † and Repentance) Character The Forgotten iconThe Forgotten The Forgotten It's complicated
(in Repentance) Character Bethany iconBethany Bethany Defeat Mom's Heart/It Lives! on hard mode as Character Lazarus iconLazarus, without dying at all
(in Repentance) Character Jacob and Esau iconJacob and Esau Jacob and Esau Defeat Mother
(in Repentance) Character Tainted Isaac iconTainted Isaac The Broken Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Isaac iconIsaac
(in Repentance) Character Tainted Magdalene iconTainted Magdalene The Dauntless Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Magdalene iconMagdalene
(in Repentance) Character Tainted Cain iconTainted Cain The Hoarder Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Cain iconCain
(in Repentance) Character Tainted Judas iconTainted Judas The Deceiver Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Judas iconJudas
(in Repentance) Character Tainted ??? iconTainted ??? The Soiled Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character ??? (Character) icon???
(in Repentance) Character Tainted Eve iconTainted Eve The Curdled Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Eve iconEve
(in Repentance) Character Tainted Samson iconTainted Samson The Savage Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Samson iconSamson
(in Repentance) Character Tainted Azazel iconTainted Azazel The Benighted Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Azazel iconAzazel
(in Repentance) Character Tainted Lazarus iconTainted Lazarus The Enigma Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Lazarus iconLazarus
(in Repentance) Character Tainted Eden iconTainted Eden The Capricious Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Eden iconEden
(in Repentance) Character Tainted Lost iconTainted Lost The Baleful Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character The Lost iconThe Lost
(in Repentance) Character Tainted Lilith iconTainted Lilith The Harlot Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Lilith iconLilith
(in Repentance) Character Tainted Keeper iconTainted Keeper The Miser Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Keeper iconKeeper
(in Repentance) Character Tainted Apollyon iconTainted Apollyon The Empty Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Apollyon iconApollyon
(in Repentance) Character Tainted Forgotten iconTainted Forgotten The Fettered Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character The Forgotten iconThe Forgotten
(in Repentance) Character Tainted Bethany iconTainted Bethany The Zealot Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Bethany iconBethany
(in Repentance) Character Tainted Jacob iconTainted Jacob The Deserter Use Collectible Red Key iconRed Key (etc.) to open the hidden closet in (in Repentance)HomeHome as Character Jacob and Esau iconJacob and Esau

Trivia[ | ]

  • One common theory (which was confirmed by Edmund) is that all characters are different forms of Isaac himself. This theory suggests that every character is a creation of Isaac's imagination which he assumes the personality and appearance of when playing as them. Most characters represent different issues that Isaac believes he has, while ??? is Isaac after dying by suffocation inside The Chest, Azazel is who Isaac sees himself as, and The Lost is Isaac's wandering soul (which can be seen upon dying).
    • (except in Rebirth) Additionally, Keeper is Isaac's desiccated corpse, as evidenced by Ending 18.
    • (in Afterbirth † and Repentance) The Forgotten could be Isaac's skeleton shown in Ending 17 and Ending 20.
    • (in Repentance) This theory is also confirmed by the cutscene before fighting The Beast, in which Isaac briefly turns into The Lost, The Forgotten, and ??? as he grows his angel wings.
  • (in Repentance) While on the character selection screen for the tainted characters, a male voice sings instead of the normal female voice, and the song is distorted. The same is true when loading into the game after selecting a tainted character.
    • Also, when a tainted character is selected or being selected, the taskbar icon of the game changes to look like Tainted Isaac.
  • In the Requiem expansion for the Four Souls card game, the tainted characters have their achievement names (e.g. "The Broken" instead of "Tainted Isaac") unlike in the video game. This was decided in a poll made by Edmund via twitter.
    • Before that, Edmund had posted an image of Isaac's alternate version being referred to as "Tainted Isaac".
  • When switching back and forth between the tainted and normal characters, you can see Isaac's face behind the Who Am I? note, which either appears as Normal or Tainted Isaac depending on which side you switch to.
  • The closet you find any tainted character in is the same closet you see during Ending 21. This is reflected in how the characters you find inside the closet are usually hurt or damaged in some way, like how a child would look after being forced into a closet.
  • Most of the tainted characters' Delirium unlock are their starting ability. Exceptions to this are Tainted Isaac, Tainted Lost, Tainted Keeper and Tainted Eden.
  • Many, if not all, of the tainted characters have similar abilities to their non-tainted variants, with them having a "twist" on the original character that alters the playstyle in significant ways. An example of this is Isaac and Tainted Isaac, where the former uses D6 to reroll unfavorable items, and the latter automatically is presented with 2 options each pedestal, at the cost of an inventory allowing only 8 passive items at a time.

Audio[ | ]

One of the noises characters make when receiving damage.

Another sound characters make when taking damage.

Another noise characters make when getting hit.

One of the sounds characters make when dying.

Another noise characters can make upon dying.

The sound characters make upon taking a pill with the "I Found Pills!" effect.


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