Binding of Isaac: Rebirth Wiki

Lil Brimstone is a passive item.


  • Grants a familiar that fires a thin Brimstone Brimstone beam. It needs to be charged up; it will not fire if Isaac is shooting a steady stream of tears.
    • Removed in Repentance The beam deals 3.5 damage per tick and can strike an enemy up to 9 times, for a total of 31.5 damage.
      • Added in Repentance The beam deals 2.5 damage per tick and can strike an enemy up to 8 times, for a total of 20 damage.
    • Removed in Repentance Unlike Brimstone, Lil Brimstone can start charging up a beam while still firing the previous one.
  • Added in Repentance This item belongs to the Conjoined set. Collecting three items from this set will transform Isaac into a three-faced version of himself.


  • Removed in Afterbirth Lil Brimstone is a Special Item.
  • Added in Repentance Lil Brimstone takes priority over all other following familiars aside from Incubus Incubus, and will always appear first in line directly behind Isaac or second behind Incubus.
  • Unlike other Brimstone items, Lil Brimstone can begin charging while firing.


  • Baby-Bender Baby-Bender: Brimstone beams will home in on enemies.
  • King Baby King Baby / Marked Marked: While firing, Brimstone will be charged automatically and fired immediately upon full charge, the beam will now target the crosshair/nearest enemy.


In-game Footage[]


PC Z7F2 XHSN (Treasure room adjacent to spawn) Normal mode only

PC QPA0 XR37 (Treasure room adjacent to spawn) Hard mode only

PC SCFM KGAT (First floor treasure room) Normal and hard modes only

PS4 MJH6 JJ00 (First floor treasure room)

Vita 43YG EGL6 (Treasure room adjacent to spawn)

3DS VS97 K7R4 (First floor treasure room)

Switch HKQV DHS9 (Second floor devil room)


Bug Bug! Lil Brimstone sometimes gets stuck at the entrance of a door after removing a co-op player.[Check ingame]
Bug Bug! Lil Brimstone might be placed in the back of your follower train when exiting and entering the game.[Check ingame]