Rotten Baby

"Infested friend"
Entity ID	5.100.268
Item Pool	Baby Shop Rotten Beggar Devil Room Treasure Room Devil Room Treasure Room
Collection Grid	(page 3, column 3, row 2) (page 3, column 3, row 7) (page 3, column 4, row 2)

Rotten Baby is a passive item.

Effect

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

Notes

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

Synergies

• Fish Tail: Rotten Baby will spawn two flies at a time.
• Mongo Baby: Mongo Baby will also spawn flies.

Interactions

• BFFS!: No effect. Rotten Baby becomes larger, but this is only a cosmetic change.
• Hive Mind: The real BFFS! for Rotten Baby. Fly damage is doubled.
• The Twins: Unlimited flies can be slowly generated by walking back and forth between rooms while firing. A new fly will generate each time Rotten Baby is duplicated.

Trivia

• 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

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 EBH3 A1PM (First floor treasure room)

PC CGRP WYLB (Treasure Room adjacent to spawn)

PS4 RMJ8 JHGG (Treasure Room adjacent to spawn)

Bugs

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