Binding of Isaac: Rebirth Wiki
Binding of Isaac: Rebirth Wiki

One Tooths are little bats that fly. One Tooths will randomly charge the player, dealing damage on contact. When not charging, One Tooths will slowly move towards the player. At the same time, One Tooths tend to gently move away if the player moves directly towards them. However, this is not advised as One Tooths usually dash when they are near the player.


  • One Tooths often appear in rooms with less walking space, so having an item that grants flying is a good way of avoiding hits.
  • Flocks of One Tooths can be very dangerous as they tend to swarm around the player, making it difficult to circle them if they corner you.


Fat Bat[]

Added in Afterbirth

The Fat Bat is an enemy added in Afterbirth.

The Fat Bat moves slower than a normal One Tooth but has more health. Fat Bats try to align themselves diagonally to Isaac, giving them a tendency to avoid his shots. They will try to shoot at Isaac once they are diagonally aligned.



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