Teratoma

Boss Portrait
Base HP	60
Base HP	60
Stage HP	0
Stage HP	0
Ingame Appearance
Entity ID	Missing ID
Found In	Boss Degraded Boss Small Medium Large
Dropped Items	Boss

Teratoma is the posthumous version of Fistula that can appear in all environments of Chapter 4. The large size version has 60 base HP.

Behavior

• Moves around the room slowly, bouncing off the walls.
• When enough health is depleted, the one large Teratoma breaks into three medium Teratomas with 15 HP each.
• Each of the three medium Teratomas breaks into two small Teratomas with 8 HP each.
• After the smallest Teratomas are defeated, they spawn two Spiders unless they are over a pit or other obstacle.

Gallery

• Teratoma ingame.png

  Teratoma ingame.

• 

  Medium sized Teratoma.

• 

  Small Teratoma.

• 

  Teratoma as one of Delirium's forms.

Trivia

• Teratoma was added in the Wrath of the Lamb DLC for the original The Binding of Isaac.
• A teratoma is a tumor that contains tissues that are atypical for its placement in the body. This can include hair, teeth, bones, and so on.
• Unlike other posthumous bosses, Teratoma is found 3 chapters away from its base boss, Fistula.
  • This also applies to Monstro II, who is found two chapters away from Monstro.
• Unlike the original Binding Of Isaac, Teratoma doesn't bounce off of Rocks.
• Teratoma is one of the three bosses that can be spawned by It Lives, the other two being Chub and Polycephalus.
  • Because of this, Teratoma is the only boss that can both appear as a boss and be spawned by another boss in the same chapter.

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