Binding of Isaac: Rebirth Wiki

Gurdy Jr. is a boss that can appear in all environments of Chapter 2 (Caves Caves, Catacombs Catacombs, Added in Afterbirth Flooded Caves Flooded Caves).


Phase 1[]

  • Spawns a Pooter Pooter.
  • Jumps and shoots a radial of 8 tears in all directions on landing.
  • Charges towards Isaac at high speeds, sliding while bouncing off obstacles and walls, She gradually loses speed before coming to a full stop.
    • Any Pooters caught in her charge will be killed.
    • The course of her charge can be affected by Tear knockback
    • If Gurdy Jr. charges into an active bomb, she is slowed down tremendously.

Phase 2[]

  • When she has less than 50% health, she uses her charge attack continuously.

Champion Versions Needs to be unlocked[]

Blue: Instead of one Gurdy Jr., there will be two 42% smaller ones. This version has 45% less HP than the original (137.5) and only uses the charging attack. It drops a Soul Heart Soul Heart upon death.
Gold: 15% larger than the regular, with 25% more HP (312.5). She spawns Super Pooter Super Pooters instead of regular Pooters. Does not shoot projectiles of any sort.



  • Slowing Gurdy Jr. will, for the most part, render her charge attack useless.
  • Removed in Repentance Piercing tears lack knockback and cannot be used to divert or stop Gurdy Jr.'s charge attack.
  • If Gurdy Jr. is feared/stunned during her charge attack after the effect wears off, she will immediately charge at Isaac.


  • Gurdy Jr. was added in the Wrath of The Lamb DLC for the original The Binding of Isaac.
    • Gurdy Jr. from Wrath of the Lamb is larger than Gurdy Jr. in Rebirth.
    • In the original game, Gurdy Jr. could be encountered in the Cellar Cellar.
  • Gurdy Jr. appears to be the second stage of the "Gurdy" boss line, with the first stage as Gurglings Gurglings, third as Gurdy Gurdy, and final as Mama Gurdy Mama Gurdy.
  • Gurdy Jr. is female. [citation needed]
  • Edmund McMillen has referred to the double Gurdy Jr. champion room in an interview as "double Gurditration".