Bob's Brain - The Binding of Isaac

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Bob's Brain is a familiar in The Binding of Isaac.

Spawns a familiar that follows Isaac and launches forward while shooting.

If it hits an enemy, it deals 3.5 damage to the enemy and explodes. The explosion deals 100 damage and poisons enemies in its blast radius.

The explosion can hurt Isaac, dealing a full heart of damage.

Upon exploding, the familiar re-appears after a few seconds.

This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this item for the previous Repentance version, check this page instead.

This item contributes towards the Bob transformation. Collecting 3 items from this set will grant Isaac poison immunity and make him leave green poisonous creep on the ground that deals 20 damage per second.

Bob's Brain can be found in the following item pools:

Name	Weight
Treasure Room	1.0/1.0
Greed Treasure Room	1.0/1.0
Baby Shop	1.0/1.0
Rotten Beggar	1.0/1.0

The following tags are applied to this item:

Id	Description
bob	Contributes towards the Bob transformation.
summonable	Can be summoned via Lemegeton.
monstermanual	Can be summoned via Monster Manual.
offensive	Can appear for Tainted Lost.

The following special synergies and interactions for Bob's Brain have been documented.

Mod	Item	Synergy
---	BFFS!	×2 contact damage. +25 explosion damage.
---	Abyss	Spawns a yellow locust that explodes upon enemy contact, dealing 40 damage, and has a 30% chance to poison enemies.