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

Added in Afterbirth

Isaac turns into Bob after picking up three distinct items in the following list. In this form, Isaac gains a green trail of poisonous creep that deals 2 damage per tick or 6 damage per second, and Added in Repentance becomes immune to Poison.

Activated Collectibles[]

Name ID Icon Quote Description Added in Repentance Quality
Bob's Rotten Head 5.100.42
Bob's Rotten Head
2 rooms
Reusable ranged bomb Upon use, Isaac holds a poison bomb which can be thrown in the cardinal directions and explodes on impact. 1

Passive Collectibles[]

Name ID Icon Quote Description Added in Repentance Quality
Bob's Brain 5.100.273 Bob's Brain Explosive thoughts Spawns a familiar that charges forward when shooting tears and explodes upon contact with an enemy, damaging and poisoning them. The familiar respawns after a few seconds. 1
Bob's Curse 5.100.140 Bob's Curse +5 poison bombs Gives 5 bombs and grants Isaac's bombs a poison effect. 1
Ipecac 5.100.149 Ipecac Explosive shots Replaces tears with explosive and poisoning projectiles fired in an arc from the mouth. 4


The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth
Achievements Achievements Attributes Attributes Bosses Bosses TarotCard.png Cards and Runes Challenges Challenges Chapters Chapters
Characters Characters MainPageBabies.png Co-op Items Items Item pools Item pools Monsters Monsters Objects Objects
Pickups Pickups Pills Pills Rooms Rooms Seeds Seeds Transformations Transformations Trinkets Trinkets