The Binding of Isaac Wiki


780pages on
this wiki

Xxx form2Isaac scribble RebirthKeeper sprite

Pin clean
Official artwork by Edmund McMillen
Floor(s) Cellar
XIII Death

Cupid's Arrow

Item Drop(s) Common Drops

WotL Common Drops

Rebirth Stats

Pin is a boss that can be encountered in the Cellar. It is also the mini version of Scolex.


Its primary attack involves it bursting out of the ground and diving at your position, dealing normal touch damage before burrowing back into the ground at that spot. Just before it re-enters the ground, four blood projectiles fire out in an X pattern from the last segment of its body. In its secondary attack, Pin's head pokes out of the soil and it launches an explosive, IPECAC-like shot toward the player's location.

Pin's body segments appear to take damage separately, much like Chub, and it can thus be instantly killed with a single use of The Necronomicon or the XIII Death tarot card while it is in the air.

  • It is best to shoot directly towards Pin while it is diving at you as this will cause the most shots to hit the target.
  • Pin will generally dive out near where it last landed, but it may actually burst out in an entirely different spot in the room.
  • After it pokes its head out and uses its explosive shot, Pin will emerge from the same hole it poked out of before. Pin still takes damage despite being underground after this shot, so maintain fire on where he drops back under ground.
  • Sticking to the walls and moving slightly everytime Pin jumps makes it near impossible for Pin to hit you.
  • It generally dives exactly where you are with no regard to where you will be, so try to always be on the move
  • Poison is very effective. Poisoning multiple segments essentially stacks the poison effect, dealing a lot of damage relatively quickly. Pin has six body segments, meaning you can stack it on it many times.
  • Piercing attacks, such as Technology and Cupid's Arrow, are devastating if fired at Pin horizontally, as each body part takes damage separately. Splash damage (bombs, IPECAC, etc.) will also have a similar effect, and due to Pin's low health, a well-placed bomb can kill Pin at full health.
  • Using Mom's pad against Pin causes him to separate and the segments will get very far apart until the effect wears off.
  • Dead bird is very effective if you can get it near Pin.

Champion Variants


Pin Dark

Pin is larger, and fires six shots in all directions rather than an explosive shot when it pops its head out of the ground.

Eternal Variant

The Eternal Variant of Pin dives the player faster and more often, as well as shooting out 5 sets of 4 blood projectiles in an X pattern throughout its jump. Its secondary attack shoots out 6 IPECAC shots which leave damaging creep.



  • If struck by an attack that freezes or slows down mid flight (eg. Mom's Bra), Pin will fall straight down.
  • Pin will frequently damage itself with its explosive shots, especially if the player is close to it when it pops out of the ground.
  • Sometimes in the credits, Scolex will be rapidly flashing between Pin and Scolex's appearances.
  • After using its secondary attack (with the explosive shot), Pin disappears into the ground and cannot be seen, but shots fired at that location will still hit and hurt it.
    • After using the secondary attack Pin will always jump out of the ground on that spot.
  • If Pin is dealt the finishing blow by the Dead Bird, it will instead revert to full health and will have to be killed again. After this, the rumbling dirt animations that play when it leaps out of the ground will no longer show.
  • If you use Mom's Pad while Pin is in mid-flight, all of his segments will seperate and go to different places, trying to get away from you (including the hole he comes out of).
  • If Pin is killed while jumping directly over the item spawn area, the item may disappear.


  • While Wrath of the Lamb featured many dead versions of old bosses, Pin is the younger version of Scolex. It attacks and behaves nearly exactly like Scolex but can be damaged from any side, instead of just the back.
  • Pin shares with Scolex a similarity to the "The Legend of Zelda" boss Lanmola, though Pin is perhaps even more similar, firing shots in an identical manner to "The Legend of Zelda" boss when emerging from the ground.
  • Pin is most likely based off of the Pinworm, an internal parasite that lives in feces and can be consumed in unwashed vegetables. They are common in young children, but are usually harmless to humans.


Cain vs. Pin - TBoI 100:54

Cain vs. Pin - TBoI 1.4 Petden 2

Pin fight

Basement Larry Jr.MonstroThe Duke of FliesGeminiStevenFamine
Cellar WidowPinThe Duke of FliesFamineGurdy Jr.The Blighted Ovum
The Caves FistulaPeepGurdyChubC.H.A.D.Pestilence
Catacombs The HuskThe HollowThe Blighted OvumThe Carrion QueenPeepPestilenceThe WretchedGurdy Jr.
The Depths LokiMonstro IIGishWarMom
Necropolis Mask of InfamyDaddy Long LegsThe Carrion QueenThe BloatLokiWarThe WretchedMom
The Womb ScolexBlastocystThe BloatDeathConquestDaddy Long LegsTriachnidTeratomaMom's HeartIt Lives
Utero TeratomaThe BloatDeathConquestDaddy Long LegsTriachnidLokiiMom's HeartIt Lives
Sheol The FallenSatan
Cathedral Isaac
The Chest ???
First to fifth and seventh level The FallenHeadless Horseman
Devil Room Krampus

Start a Discussion Discussions about Pin

  • bosses have problems.

    9 messages
    • Just had the same problem with Magdalene, the same bug as descripted for the dead bird, but without any upgrade... More than 200 runs and tha...
    • yep, I know the same, IT HAPPENED TO ME TOO
  • Posthumous Pin

    6 messages
    • i personaly think he IS. because it is kinda like he is a skinned pin
    • I personally think FUCKING necro, nice work.

Around Wikia's network

Random Wiki