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200x300-400px-Triachnid boss portrait
Offical artwork by Edmund McMillen
Floor(s) The Womb


Daddy Long Legs
Item Drop(s) Common Drops

WotL Common Drops

Rebirth Stats

Triachnid (aka "Daddy Long Legs II") is an alternate version of Daddy Long Legs and is unlocked by completing the Womb and/or Utero 15 times.


He hovers in the middle of the room much like Mom's Heart and It Lives. He has four different attacks:

  • Stomping all three of his feet around the room.
  • Retracting into the air and stomping one foot at a time.
  • Spawning a Trite by coughing them up.
  • Slamming his own head into the ground to stomp Isaac, firing blood tears in 8 directions.

Its attacks are identical to Daddy Long Legs, except more white slowing creep comes from his 'feet' and using his headslam attack spews 8 diagonal shots across the room.

Unlike the other alternate unlocks (Steven, C.H.A.D. and Gish), Triachnid does not have a specific item drop.



  • This boss is a reference to another of Edmund McMillen's games, Tri-Achnid, which can be found here:
    • The story of the flash game is that Triachnid is trying to find a safe haven for his children. In Wrath of the Lamb, Triachnid presumably would have replaced Daddy Long Legs.
  • Before version 1.15, Triachnid would replace Isaac in the Cathedral as the final boss if Isaac was defeated while The Polaroid trinket was being held. This was confirmed as a glitch by Edmund McMillen after it was replaced with ??? with the 1.15 patch and removed from the game.
  • With 1.333, Triachnid was added back to the game and it correctly unlocks as an alternative boss to Daddy Long Legs instead.


*SPOILERS* The Binding of Isaac Stand-Alone Daddy Long Legs II Fight00:45

*SPOILERS* The Binding of Isaac Stand-Alone Daddy Long Legs II Fight

Triachnid Battle

Isaac vs02:36

Isaac vs. Triachnid (Daddy Long Legs II) - The Binding of Isaac Wrath of the Lamb

Isaac vs. Triachnid (Daddy Long Legs II)

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

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