Xxx form2Isaac RebirthTemplate:BossInfoBox

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.

Champion Variant


Every stomp of Eternal Triachnid leaves a small puddle of white creep and sometimes, an additional Sack. All other attacks are same as its normal counterpart.


  • 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.[1]
  • With 1.333, Triachnid was added back to the game and it correctly unlocks as an alternative boss to Daddy Long Legs instead.



Regular Bosses
BlastocystChubDaddy Long LegsDark OneDingleDuke of FliesThe FallenFistulaGeminiGurdyGurdy Jr.GurglingsThe HauntLarry Jr.LokiMama GurdyMask of InfamyMega FattyMega MawMonstroMr. FredPeepPinPolycephalusScolexTurdlingsWidow

Afterbirth: BrownieDangleLittle HornRag ManTurdlings
Afterbirth †: Big HornRag Mega
Antibirth-only: Baby PlumBeelzeblubChimeraGreat GideonHornfelThe RainmakerReap CreepRotgutThe ScourgeThe SirenTuff TwinsWormwood

Posthumous Bosses
The AdversaryThe Blighted OvumThe BloatThe CageCarrion QueenThe GateThe HollowThe HuskLokiiMonstro IITeratomaThe Wretched

Afterbirth: The ForsakenThe FrailThe Stain
Antibirth-only: The HereticThe PileThe Visage

Alternative Bosses

Afterbirth †: Sisters Vis

ConquestWarFamineDeathPestilenceHeadless Horseman
Final Bosses
???IsaacIt LivesThe LambMega SatanMomMom's HeartSatan

Afterbirth: HushUltra Greed
Afterbirth †: Delirium
Antibirth-only: The Witness

Seven Deadly Sins
Seven Super Deadly Sins
Super EnvySuper GluttonySuper GreedSuper LustSuper PrideSuper SlothSuper WrathUltra Pride
Angels / Demons
KrampusGabrielUrielFallen Angels
Community content is available under CC-BY-SA unless otherwise noted.