Template:DisambigMsg
Rebirth features two player local co-op on PC (Up to 4 with the Afterbirth DLC), while the Playstation 4 version is capable of both local and online multiplayer via PS4's "Share Play" feature. The Playstation 4 version can support up to 4 players with the addition of more controllers. Co-op players can join in at any time as a random baby, taking a heart container away from Isaac and giving it to the second player. Subsequent pressing of the join button will despawn the baby, giving Isaac the heart container back.
Template:Afterbirth Upon joining, co-op players have the option to choose from a pool of 5 special babies. When one of those special babies dies, it is removed from the pool. Once the pool is depleted, joining will cause the co-op player to spawn as a random normal baby.
Notes
- Soul Hearts will be given to Player 2 before normal hearts, and half hearts will be given before full hearts. If player 2 dies, they can rejoin the game at the cost of another heart container, as a new random Baby.
- The appearance of a majority of the Babies is solely cosmetic, but there are a number of "special" Babies with beneficial effects. In order to stop things from becoming too overpowered, every special Baby has a "cursed" Baby counterpart.
- The last shooting familiar Isaac picked up will follow Player 2 instead of Isaac.
- If Isaac has more than 6 total hearts, including soul hearts and black hearts, Player 2 will take two hearts instead of one.
- If Isaac has the maximum of 12 hearts, including soul hearts and black hearts, Player 2 will take three hearts instead of one or two.
- The maximum amount of hearts Player 2 can have is three red hearts and one soul heart, using Scapular.
- Because at least 1.5 hearts are required for co-op, Player 2 cannot join when playing as The Lost.
Rebirth Babies
Template:Babies rebirth
Afterbirth Babies
Special Babies
These Babies have special bonuses that will aid the player in some way. In order to keep things random and to stop co-op playthroughs from becoming too overpowered, Special Babies may have "cursed" counterparts, which will hinder or inconvenience the player in some way.
| Appearance | Name | Description |
|---|---|---|
|
Black Baby | Spawns with an extra black heart.
Unlocked by defeating Mega Satan as Azazel. |
|
Red Baby | Spawns with an extra red heart.
Unlocked by defeating Mega Satan as Magdalene. |
|
White Baby | Gives Isaac an eternal heart when it spawns.
Unlocked by defeating Mega Satan as The Lost. |
|
Blue Baby | Spawns with an extra soul heart.
Unlocked by defeating Mega Satan as ???. |
|
Rage Baby | Occasionally briefly increases Isaac's damage.
Unlocked by defeating Mega Satan as Samson. |
|
Cry Baby | Occasionally briefly increases Isaac's tears.
Unlocked by defeating Mega Satan as Isaac. |
|
Yellow Baby | Occasionally briefly increases Isaac's speed by 0.15.
Unlocked by defeating Mega Satan as Eden. |
|
Long Baby | Occasionally briefly increases Isaac's range, shot speed, and tear height.
Unlocked by defeating Mega Satan as Lazarus. |
|
Green Baby | Occasionally briefly increases Isaac's luck by 2.
Unlocked by defeating Mega Satan as Cain. |
|
Lil' Baby | Occasionally briefly decreases Isaac's size.
Unlocked by defeating Mega Satan as Eve. |
|
Big Baby | Occasionally briefly increases Isaac's size.
Unlocked by defeating Mega Satan as Lilith. |
|
Brown Baby | Occasionally briefly gives Isaac the Butt Penny effect. While it is active, picking up a coin will make Isaac fart, knocking back nearby enemies.
Unlocked by defeating Mega Satan as Judas. |
|
Noose Baby | Occasionally briefly gives Isaac the Transcendence effect, granting flight.
Unlocked by defeating Mega Satan as Keeper. |
|
Hive Baby | Occasionally briefly gives Isaac the Hive Mind effect, doubling the damage dealt by blue spiders and blue flies.
Unlocked by earning all Completion Marks on Hard mode as ???. |
|
Buddy Baby | Occasionally briefly gives Isaac the Guillotine effect, detaching Isaac's head and increasing damage and tears.
Unlocked by earning all Completion Marks on Hard mode as Isaac. |
|
Colorful Baby | Upon joining, fully heals Isaac, similar to the rainbow poop effect.
Unlocked by earning all Completion Marks on Hard mode as Magdalene. |
|
Whore Baby | Occasionally briefly gives Isaac the Whore Of Babylon effect, increasing damage and speed.
Unlocked by earning all Completion Marks on Hard mode as Eve. |
|
Cracked Baby | Unlocked by earning all Completion Marks on Hard mode as Eden. |
|
Dripping Baby | Occasionally briefly gives Isaac Anemic, increasing range by 5 and causing Isaac to leave a trail of blood that damages enemies.
Unlocked by earning all Completion Marks on Hard mode as Lazarus. |
|
Blinding Baby | Upon death, activates the effect of the XIX - The Sun card, fully restoring Isaac's red hearts, deals 100 damage to all enemies in the room, and revealing the map for the current floor.
Unlocked by using Blank Card while holding XIX - The Sun. |
|
Sucky Baby | Has an aura around itself that damages enemies while they are inside, similar to Succubus.
Unlocked by earning all Completion Marks on Hard mode as Azazel. |
|
Dark Baby | Occasionally provides a brief boost to all of Isaac's stats.
Unlocked by earning all Completion Marks on Hard mode as Lilith. |
|
Picky Baby | Unlocked by earning all Completion Marks on Hard mode as Cain. |
|
Revenge Baby | Occasionally briefly increases Isaac's damage.
Unlocked by earning all Completion Marks on Hard mode as Samson. |
|
Belial Baby | Occasionally briefly gives Isaac the Book Of Belial effect, increasing damage.
Unlocked by earning all Completion Marks on Hard mode as Judas. |
|
Sale Baby | Occasionally briefly gives Isaac the Steam Sale effect, halving the prices of all shop items.
Unlocked by earning all Completion Marks on Hard mode as Keeper. |
|
Goat Head Baby | Occasionally briefly gives Isaac the Goat Head effect, guaranteeing that a Devil Room or Angel Room will open if a boss room is completed while the effect is active.
Unlocked by defeating Mom's Heart or It Lives on Hard mode as Lilith. |
|
Super Greed Baby | Has the Head Of The Keeper effect, firing coin tears that have a chance to spawn a coin upon hitting an enemy.
Unlocked by defeating Mom's Heart or It Lives on Hard mode as Keeper. |
Normal Babies
These Babies are purely cosmetic and do not have any special behaviors.
| Appearance | Name | Description |
|---|---|---|
| File:231 baby punkboy.png | Punkboy Baby | A baby dressed as a punk rocker boy. |
| File:232 baby punkgirl.png | Punkgirl Baby | A baby dressed as a punk rocker girl. |
| File:233 baby computer.png | Computer Baby | A baby with a computer for a head. |
| File:234 baby mask.png | Mask Baby | A baby wearing a mask. |
| File:235 baby gem.png | Gem Baby | A baby that looks like it's made of crystal. |
| File:236 baby shark.png | Shark Baby | A baby that looks like a shark. |
| File:237 baby beret.png | Beret Baby | A baby that's wearing a beret. |
| File:238 baby blisters.png | Blisters Baby | A baby covered in blisters. Ouch! |
| File:239 baby radioactive.png | Radioactive Baby | A sickly green baby. |
| File:240 baby beast.png | Beast Baby | A baby that looks like a beast. |
| File:241 baby dark.png | Dark Baby | A very dark baby. |
| File:242 baby snail.png | Snail Baby | A baby that looks like a snail. |
| File:243 baby blood.png | Blood Baby | A baby that looks like a drop of blood. |
| File:244 baby 8ball.png | 8 Ball Baby | A baby with an 8 ball for a head. |
| File:245 baby wisp.png | Wisp Baby | A wispy baby. |
| File:246 baby cactus.png | Cactus Baby | A baby that looks like a cactus. |
| File:247 baby loveeye.png | Love Eye Baby | A pink baby with a heart for an eye. |
| File:248 baby medusa.png | Medusa Baby | A baby that resembles Medusa. |
| File:249 baby nuclear.png | Nuclear Baby | A baby that looks like a mushroom cloud. |
| File:250 baby purple.png | Purple Baby | A strange purple baby. |
| File:251 baby wizard.png | Wizard Baby | A baby with a wizard hat. |
| File:252 baby earth.png | Earth Baby | A baby whose head looks like planet Earth. |
| File:253 baby saturn.png | Saturn Baby | A baby with a ring around its head. |
| File:254 baby cloud.png | Cloud Baby | A baby made of cloud. |
| File:255 baby tube.png | Tube Baby | A baby with a tube connecting both eyes. |
| File:256 baby rocker.png | Rocker Baby | A baby dressed as a rock fan. |
| File:257 baby king.png | King Baby | A baby with a crown. Very regal indeed! |
| File:258 baby coat.png | Coat Baby | A baby wearing a winter coat. |
| File:259 baby viking.png | Viking Baby | A baby with a Viking helmet. |
| File:260 baby panda.png | Panda Baby | A baby that looks like a panda. Aww... |
| File:261 baby raccoon.png | Raccoon Baby | A baby that looks like a raccoon. |
| File:262 baby bear.png | Bear Baby | A baby that looks like a grizzly bear. |
| File:263 baby polarbear.png | Polar Bear Baby | A baby that looks like a polar bear. |
| File:264 baby lovebear.png | Lovebear Baby | A baby that looks like a Care Bear. |
| File:265 baby hare.png | Hare Baby | A baby that looks like a rabbit. |
| File:266 baby squirrel.png | Squirrel Baby | A baby that looks like a squirrel. |
| File:267 baby tabby.png | Tabby Baby | A baby that looks like a cat. |
| File:268 baby porcupine.png | Porcupine Baby | A baby that looks like a porcupine. Prickly! |
| File:269 baby puppy.png | Puppy Baby | A baby that looks like a puppy. |
| File:270 baby parrot.png | Parrot Baby | A baby that looks like a parrot. |
| File:271 baby chameleon.png | Chameleon Baby | A baby that looks like a Chameleon. |
| File:272 baby boulder.png | Boulder Baby | A baby made of rocks. |
| File:273 baby aqua.png | Aqua Baby | An aqua-blue baby. |
| File:274 baby gargoyle.png | Gargoyle Baby | A baby that resembles a gargoyle. |
| File:275 baby spikydemon.png | Spiky Demon Baby | A baby that looks like a spiky demon. |
| File:276 baby reddemon.png | Red Demon Baby | A baby that looks like a red demon. |
| File:277 baby orangedemon.png | Orange Demon Baby | A baby that looks like an orange demon. |
| File:278 baby eyedemon.png | Eye Demon Baby | A baby with an eye for a head. |
| File:279 baby fangdemon.png | Fang Demon Baby | A baby with big fangs. |
| File:280 baby ghost.png | Ghost Baby | A baby that looks like a ghost. Boo! |
| File:281 baby arachnid.png | Arachnid Baby | A baby that looks like a spider. |
| File:282 baby bony.png | Bony Baby | A baby that looks like a Bony. |
| File:283 baby bigtongue.png | Big Tongue Baby | A baby with a big tongue. |
| File:284 baby 3d.png | 3D Baby | A baby wearing 3D glasses. |
| File:285 baby suit.png | Suit Baby | A baby in a nice suit. |
| File:286 baby butt.png | Butt Baby | A baby with a butt for a face. |
| File:287 baby cupid.png | Cupid Baby | A baby that looks like Cupid. |
| File:288 baby heart.png | Heart Baby | A baby with a heart-shaped head. |
| File:289 baby killer.png | Killer Baby | A baby that looks like a villain from a horror movie. |
| File:290 baby lantern.png | Lantern Baby | A dressed baby with a lantern. |
| File:291 baby banshee.png | Banshee Baby | A baby that looks like a banshee. |
| File:292 baby ranger.png | Ranger Baby | A baby that looks like a Red Power Ranger. |
| File:293 baby rider.png | Rider Baby | A baby that looks like a Kamen Rider. |
| File:294 baby choco.png | Choco Baby | A baby made of chocolate. Yummy... |
| File:295 baby woodsman.png | Woodsman Baby | A baby dressed as a hiker. |
| File:296 baby brunette.png | Brunette Baby | A baby with brown hair |
| File:297 baby blonde.png | Blonde Baby | A baby with blonde hair. |
| File:298 baby bluehair.png | Blue Hair Baby | A baby with blue hair |
| File:299 baby bloodied.png | Bloodied Baby | A baby covered in blood. |
| File:300 baby cheese.png | Cheese Baby | A baby made of cheese. |
| File:301 baby pizza.png | Pizza Baby | A baby made of pizza. |
| File:302 baby hotdog.png | Hotdog Baby | A baby that is also a hotdog. |
| File:303 baby hotdog.png | Nature Baby | A naked baby with a leaf. |
| File:304 baby borg.png | Borg Baby | A robotic baby. |
| File:305 baby corrupted.png | Corrupted Baby | A baby with seems to be covered by an alien life. Eww... |
| File:306 baby xmouth.png | X Mouth Baby | A gagged baby. |
| File:307 baby xeyes.png | X Eyed Baby | A comically dead baby. |
| File:308 baby stareyes.png | Starry Eyed Baby | A baby with starry eyes |
| File:309 baby surgeon.png | Surgeon Baby | A baby ready for surgery. |
| File:310 baby sword.png | Sword Baby | A baby that's a very pointy. |
| File:311 baby monk.png | Monk Baby | A baby that's a monk. |
| File:312 baby disco.png | Disco Baby | A funky baby with an afro |
| File:313 baby puzzle.png | Puzzle Baby | A baby with a "Rubix Kube" for a head |
| File:314 baby speaker.png | Speaker Baby | A baby that has a speaker for a head. |
| File:315 baby scary.png | Scary Baby | A spooky baby. |
| File:316 baby fireball.png | Fireball Baby | A fireball with eyes. |
| File:317 baby maw.png | Maw Baby | A baby that's just a mouth. Scary. |
| File:318 baby exploding.png | Exploding Baby | A baby that's a bomb. |
| File:319 baby cupcake.png | Cupcake Baby | A baby that's also a cupcake. Yummy. |
| File:320 baby skinless.png | Skinless Baby | A baby without skin. |
| File:321 baby ballerina.png | Ballerina Baby | A baby wearing a tutu. |
| File:322 baby goblin.png | Goblin Baby | A baby that resembles a goblin. |
| File:323 baby coolgoblin.png | Cool Goblin Baby | A green baby with brown hair and cool shades. |
| File:324 baby geek.png | Geek Baby | A baby with black hair and nerdy glasses. |
| File:325 baby longbeard.png | Long Beard Baby | A baby with a long beard. |
| File:326 baby muttonchops.png | Muttonchops Baby | A baby with muttonchops. |
| File:327 baby spartan.png | Spartan Baby | |
| File:328 baby tortoise.png | Tortoise Baby | A baby that looks like a tortoise. |
| File:329 baby slicer.png | Slicer Baby | A baby that resembles Shredder. |
| File:330 baby butterfly.png | Butterfly Baby | A baby with butterfly wings. |
| File:331 baby homeless.png | Homeless Baby | A baby that resembles a homeless person. |
| File:332 baby lumberjack.png | Lumberjack Baby | A baby that resembles a lumberjack. |
| File:333 baby cyberspace.png | Cyberspace Baby | |
| File:334 baby hero.png | Hero Baby | A baby that resembles Red from Gunstar Heroes. |
| File:335 baby boxers.png | Boxers Baby | A baby that resembles Arthur from Ghosts & Goblins (in his boxers). |
| File:336 baby winghelmet.png | Wing Helmet Baby | A baby that resembles Opa-Opa. |
| File:337 baby x.png | X Baby | A baby with an X for a head. |
| File:338 baby o.png | O Baby | A baby with an O for a head. |
| File:339 baby vomit.png | Vomit Baby | A baby with vomit coming from its mouth. |
| File:340 baby merman.png | Merman Baby | A baby that resembles Aquaman. |
| File:341 baby cyborg.png | Cyborg Baby | |
| File:342 baby barbarian.png | Barbarian Baby | |
| File:343 baby locust.png | Locust Baby | |
| File:344 baby twotone.png | Twotone Baby | A completely white baby with a black outline. |
| File:345 baby 2600.png | 2600 Baby | A baby that resembles an Atari 2600 sprite. |
| File:346 baby fourtone.png | Fourtone Baby | |
| File:347 baby grayscale.png | Grayscale Baby | A baby colored with several shades of gray. |
| File:348 baby rabbit.png | Rabbit Baby | A baby that resembles Oswald the Lucky Rabbit. |
| File:349 baby mouse.png | Mouse Baby | A baby that resembles an old-style Mickey Mouse. |
| File:350 baby critter.png | Critter Baby | |
| File:351 baby bluerobot.png | Blue Robot Baby | A baby that resembles Mega Man. |
| File:352 baby pilot.png | Pilot Baby | A baby that resembles Jason from Blaster Master |
| File:353 baby redplumber.png | Red Plumber Baby | A baby that resembles Mario. |
| File:354 baby greenplumber.png | Green Plumber Baby | A baby that resembles Luigi. |
| File:355 baby yellowplumber.png | Yellow Plumber Baby | A baby that resembles Wario. |
| File:356 baby purpleplumber.png | Purple Plumber Baby | A baby that resembles Waluigi. |
| File:357 baby tanooki.png | Tanooki Baby | A baby that's wearing a Tanooki Suit. |
| File:358 baby mushroomman.png | Mushroom Man Baby | A baby that resembles Toad. |
| File:359 baby mushroomgirl.png | Mushroom Girl Baby | A baby that resembles Toadette. |
| File:360 baby cannonball.png | Cannonball Baby | A baby that resembles a Chain Chomp. |
| File:361 baby froggy.png | Froggy Baby | A baby that's wearing a Frog Suit. |
| File:362 baby turtledragon.png | Turtle Dragon Baby | A baby that resembles Bowser. |
| File:363 baby shellsuit.png | Shell Suit Baby | A baby wearing a Hammer Suit. |
| File:364 baby fiery.png | Fiery Baby | A baby wearing a Fire Suit. |
| File:365 baby meanmushroom.png | Mean Mushroom Baby | A baby that resembles a Goomba. |
| File:366 baby arcade.png | Arcade Baby | A baby that resembles Pac-Man. |
| File:367 baby scaredghost.png | Scared Ghost Baby | A blue ghost with a scared expression. |
| File:368 baby blueghost.png | Blue Ghost Baby | A baby that resembles Inky |
| File:369 baby redghost.png | Red Ghost Baby | A baby that resembles Blinky |
| File:370 baby pinkghost.png | Pink Ghost Baby | A baby that resembles Pinky. |
| File:371 baby orangeghost.png | Orange Ghost Baby | A baby that resembles Clyde. |
| File:372 baby pinkprincess.png | Pink Princess Baby | A baby that resembles Princess Peach. |
| File:373 baby yellowprincess.png | Yellow Princess Baby | A baby that resembles Princess Daisy. |
| File:374 baby dino.png | Dino Baby | A baby that resembles Yoshi. |
| File:375 baby elf.png | Elf Baby | A baby that resembles Link. |
| File:376 baby darkelf.png | Dark Elf Baby | A baby that resembles Dark Link |
| File:377 baby darkknight.png | Dark Knight Baby | A baby that resembles a Darknut |
| File:378 baby octopus.png | Octopus Baby | A baby that resembles an Octorok. |
| File:379 baby orangepig.png | Orange Pig Baby | A baby that resembles an orange Moblin. |
| File:380 baby bluepig.png | Blue Pig Baby | A baby that resembles a blue Moblin. |
| File:381 baby elfprincess.png | Elf Princess Baby | A baby that resembles Princess Zelda. |
| File:382 baby fishman.png | Fishman Baby | A baby that resembles a Zora. |
| File:383 baby fairyman.png | Fairyman Baby | A baby that resembles Tingle. |
| File:384 baby imp.png | Imp Baby | A baby that resembles Midna. |
| File:385 baby worm.png | Worm Baby | A baby that resembles Earthworm Jim. |
| File:386 baby bluewrestler.png | Blue Wrestler Baby | A baby that looks like the blue player in Smash TV. |
| File:387 baby redwrestler.png | Red Wrestler Baby | A baby that looks like the red player in Smash TV. |
| File:388 baby toast.png | Toast Baby | A baby that resembles Powdered Toast Man. |
| File:389 baby roboboy.png | Roboboy Baby | A baby that resembles Astro Boy. |
| File:390 baby liberty.png | Liberty Baby | A baby that resembles the Statue of Liberty. |
| File:391 baby dreamknight.png | Dream Knight Baby | A baby that resembles Meta Knight. |
| File:392 baby cowboy.png | Cowboy Baby | A baby that's wearing a cowboy outfit. |
| File:393 baby mermaid.png | Mermaid Baby | A baby that resembles Ariel. |
| File:394 baby plague.png | Plague Baby | A baby wearing a plague doctor outfit. |
| File:395 baby spacesoldier.png | Space Soldier Baby | A baby that resembles a Warhammer 40k Space Marine. |
| File:396 baby darkspacesoldier.png | Dark Space Soldier Baby | A baby that resembles a Warhammer 40k Chaos Space Marine. |
| File:397 baby gasmask.png | Gas Mask Baby | A baby that's wearing a gas mask. |
| File:398 baby tomboy.png | Tomboy Baby | A baby that resembles Sheik from the Legend of Zelda franchise. |
| File:399 baby corgi.png | Corgi Baby | A baby that looks like a corgi. |
| File:400 baby unicorn.png | Unicorn Baby | A baby that looks like a unicorn. |
| File:401 baby pixie.png | Pixie Baby | A baby that resembles Tinkerbell. |
| File:402 baby referee.png | Referee Baby | A baby wearing a referee outfit. |
| File:403 baby dealwithit.png | Deal With It Baby | A baby with a goatee and sunglasses. |
| File:404 baby astronaut.png | Astronaut Baby | A baby that's wearing an astronaut outfit. |
| File:405 baby blurred.png | Blurred Baby | |
| File:406 baby censored.png | Censored Baby | |
| File:407 baby coolghost.png | Cool Ghost Baby | A baby that resembles the character Shades (Sukezaemon) from Ufouria: The Saga |
| File:408 baby gills.png | Gills Baby | A baby that resembles the character Gil (Jennifer) from Ufouria: The Saga |
| File:409 baby bluehat.png | Blue Hat Baby | A baby that resembles the character Bop-Louie (Hebe) from Ufouria: The Saga |
| File:410 baby catsuit.png | Catsuit Baby | A baby that's wearing a cat outfit. Also resembles the character Oh-Chan from Ufouria: The Saga (Japanese version). |
| File:411 baby pirate.png | Pirate Baby | A baby that's wearing a pirate outfit. |
| File:412 baby superrobo.png | Super Robo Baby | |
| File:413 baby lightmage.png | Lightmage Baby | A baby that resembles the white mage class from Final Fantasy. |
| File:414 baby puncher.png | Puncher Baby | A baby that resembles the warrior class from Final Fantasy. |
| File:415 baby holyknight.png | Holy Knight Baby | A baby that resembles the monk class from Final Fantasy. |
| File:416 baby shadowmage.png | Shadowmage Baby | A baby that resembles the black mage class from Final Fantasy. |
| File:417 baby firemage.png | Firemage Baby | A baby that resembles the red mage class from Final Fantasy. |
| File:418 baby priest.png | Priest Baby | A baby that's wearing a priest outfit. |
| File:419 baby zipper.png | Zipper Baby | A baby with a zipped mouth. |
| File:420 baby bag.png | Bag Baby | A baby with a bag over its head. |
| File:421 baby sailor.png | Sailor Baby | A baby that's wearing a sailor outfit. |
| File:422 baby rich.png | Rich Baby | A baby with a top hat and monocle. Indeed! |
| File:423 baby toga.png | Toga Baby | |
| File:424 baby knight.png | Knight Baby | A baby that resembles a Darknut from The Legend of Zelda. |
| File:425 baby blackknight.png | Black Knight Baby | A baby that resembles a black Darknut from The Legend of Zelda. |
Template:MasterNav