Dark Bum is a familiar in The Binding of Isaac.

Spawns a familiar that follows Isaac and collects red hearts.

For every one and a half red hearts collected, it will spawn one of the following:
• Black Heart (40% chance)
• Card or rune (20% chance)
• Pill (20% chance)
• Blue Spider (10% chance)
• Enemy Spider (10% chance)

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

This item contributes towards the Super Bum transformation. Collecting 3 items from this set will transform Isaac's bums into Super Bum, a familiar that collects coins, red hearts and keys, and drops twice as many rewards.

Dark Bum can be found in the following item pools:

The following tags are applied to this item:

• Check out the item description on the external Isaac Wiki.