Triachnid Portrait
Character Information
Character Type Boss
Floors of


Base Health
Heart flash
Unlocked By Defeat Isaac Ten Times.
Items Dropped Boss Pool

Triachnid is an enemy in The Binding of Isaac: Rebirth that appears as a Boss on the Utero. It is the alternate version of Daddy Long Legs.


Triachnid performs a variety of attacks throughout the Boss fight, all of which are as follows:

  • Triachnid will lift its head, showering each leg in random spots in the room, leaving white creep in each spot.
  • Triachnid will spawn a Trite.
  • Triachnid will lift its head all the way up, raining down each foot one at a time at Isaac's location, ending with slamming its head on the ground, shooting tears in an asterisk pattern and leaving white creep.


  • Triachnid is a reference to the spider-like creature in the game Tri-achnid.