Rotten Baby

Effect

• Spawns a familiar which does not shoot tears, but spawns friendly Blue Flies when Isaac holds down a 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

• It will spawn a maximum of one Fly at a time.
• Blue Flies deal twice Isaac's damage.
• Flies will be generated regardless of Isaac being able to fire tears normally.

Synergies

• (Added in Afterbirth †)(Fish Tail) 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.
• (Added in Repentance)(The Twins) 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.