Binding of Isaac: Rebirth Wiki
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Key master

Key Masters will pay out with either one of these items or the Paper ClipPaper Clip after being given enough keys.

Activated Collectibles[ | ]

Name ID Icon Weight Description
Dad's Key 5.100.175
Dad's Key
2 rooms
1
Upon activation, opens all doors in the current room in almost all circumstances, including doors which require a KeyKey to open, entrances to Secret RoomSecret Rooms, and the door to Mega Satan Head ingameMega Satan.
(in Repentance) Mr. ME! 5.100.527
Mr
4 rooms
1
Summons a controllable ghost that can perform various tasks depending on what it targets.
(in Repentance) Red Key 5.100.580
Red Key
4 rooms
1
Creates a Red RoomRed Room adjacent to a viable wall, indicated by the outline of a door. These rooms have a 10% chance to be a special room.

Passive Collectibles[ | ]

Name ID Icon Weight Description
BBF 5.100.272 BBF
1
Spawns a familiar that flies around the room in a zig-zag pattern and explodes on contact with an enemy. Respawns after ten seconds.
Distant Admiration 5.100.57 Distant Admiration
1
Spawns an attack fly that circles further out than Collectible Halo of Flies iconHalo of Flies, but closer than Collectible Forever Alone iconForever Alone, dealing 75 damage per second.
Forever Alone 5.100.128 Forever Alone
1
Spawns an attack fly that orbits a long distance from Isaac, dealing 30 damage per second.
Halo of Flies 5.100.10 Halo of Flies
1
Spawns two Pretty Flies that block enemy shots and deal contact damage to flies.
Mom's Key 5.100.199 Mom's Key
1
Adds 2 keys. ChestChests will drop additional pickups.
Smart Fly 5.100.264 Smart Fly
1
Spawns an orbital familiar that blocks enemy shots. Upon taking damage, the familiar will pursue enemies for the rest of the room, dealing 22.5 damage per second.
(except in Rebirth) ???'s Only Friend 5.100.320 ???'s Only Friend
1
Spawns a controllable familiar that deals 37.5 damage per second on touch. It can be moved using the shooting directional keys
(except in Rebirth) Friend Zone 5.100.364 Friend Zone
1
Spawns a white attack fly that orbits somewhere between Collectible Distant Admiration iconDistant Admiration and Collectible Forever Alone iconForever Alone, dealing 45 damage per second.
(except in Rebirth) Key Bum 5.100.388 Key Bum
1
Spawns a familiar that follows Isaac and collects KeyKeys for himself, giving random ChestChests in return.
(except in Rebirth) Lost Fly 5.100.365 Lost Fly
1
(except in Repentance) Spawns fly familiar that moves in a straight line and circles around the first wall or obstacle it hits, dealing 105 damage per second on contact.
(in Repentance) Spawns fly familiar that moves in a straight line and circles around the first wall or obstacle it hits, dealing 56 damage per second and forcing nearby enemies to attack it.
(in Repentance) Big Fan 5.100.279 Big Fan
1
Spawns a large orbital familiar that blocks enemy shots and deals 30 damage per second to enemies.
(in Repentance) Bot Fly 5.100.629 Bot Fly
1
Spawns an orbiting fly familiar that fires shielded tears at incoming enemy projectiles.
(in Repentance) Fruity Plum 5.100.649 Fruity Plum
1
Gives Isaac a miniature Boss Baby Plum ingameBaby Plum familiar that propels itself diagonally around the room, firing tears behind itself as it travels.
(in Repentance) Latch Key 5.100.343 Latch Key
1
Grants 1 Soul HeartSoul Heart and +1 luck. Spawns 2 KeyKeys.
(in Repentance) Obsessed Fan 5.100.426 Obsessed Fan
1
Spawns a familiar that follows Isaac's movements on a delay and deals 30 contact damage per second to enemies.
(in Repentance) Papa Fly 5.100.430 Papa Fly
1
Spawns a familiar that follows Isaac's movements on a 3 second delay, firing tears at nearby enemies.
(in Repentance) Psy Fly 5.100.581 Psy Fly
1
Spawns a fly orbital familiar that chases and blocks enemy shots.
(in Repentance) The Swarm 5.100.693 The Swarm
1
Spawns eight orbital flies, which turn into Blue Flies after they block a shot. Each time a room is cleared, spawns another orbital fly.
(in Repentance) YO LISTEN! 5.100.492 YO LISTEN!
1
+1 luck. Spawns a fairy familiar that points out Secret RoomSecret Rooms, Crawl SpaceCrawl Space entrances, and tinted rocks.


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