Rotten Baby

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Rotten   Baby
Item icon
Item altar
"Infested friend"
Table dividing line 1.png
Item ID
Table dividing line 2.png
Table dividing line 3.png
Collection Grid
Added in Afterbirth / Removed in Repentance(page 3, column 3, row 2)
Removed in Afterbirth(page 3, column 3, row 7)
Added in Repentance(page 3, column 4, row 2)

Rotten Baby is a passive item.

Effect[edit | edit source]

  • Spawns a familiar which does not shoot tears, but spawns friendly Blue Flies when the player holds down the fire key.
  • Added in Afterbirth This item belongs to the Conjoined set. Collecting three items from this set will transform Isaac into a three-faced version of himself.

Notes[edit | edit source]

  • It will spawn a maximum of one Fly at a time.
  • Fly damage depends on player damage.

Synergies[edit | edit source]

  • Added in Afterbirth †Fish Tail Fish Tail: Rotten Baby will spawn two flies at a time.
  • 15►Mongo Baby Mongo Baby: Mongo Baby will also spawn flies.

Interactions[edit | edit source]

  • 15►BFFS! BFFS!: No effect. Rotten Baby becomes larger, but this is only a cosmetic change.

In-game Footage[edit | edit source]

Trivia[edit | edit source]

  • This item is used in Challenge #19 (The Family Man).
  • Even though the right side of Rotten Baby's face is decayed, when his sprite faces left, his left side appears decayed as well.

Seeds[edit | edit source]

PC RXTX MGYV (Treasure Room adjacent to spawn)

PC Q9EQ XVQE (Treasure Room adjacent to spawn)

PC RDAM YDAV (Treasure Room adjacent to spawn)

PC Added in Afterbirth / Removed in Afterbirth † EBH3 A1PM (First floor treasure room)

PC Added in Afterbirth † Normal and hard modes only CGRP WYLB (Treasure Room adjacent to spawn)

PS4 RMJ8 JHGG (Treasure Room adjacent to spawn)

Bugs[edit | edit source]

Bug Bug! PC Rotten Baby will be able to spawn more than one friendly fly if the run is left and then resumed.

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