Bob is a transformation in The Binding of Isaac, added in the Afterbirth DLC.
Obtained by acquiring any 3 items with the bob tag.
Makes Isaac leave green poisonous creep on the ground that deals 20 damage per second.
Grants poison immunity.
This page shows information as of the latest Repentance release.
To see latest up-to date information about this transformation for the new Repentance+ (Online Co-op) DLC, check this page instead.