Monster Manual

"Temporary buddy generator"

Item ID
5.100.123

Recharge Time

Collection Grid
(page 2, column 10, row 2)
(page 1, column 20, row 6)


Monster Manual is an activated item.
Effects[edit | edit source]
When used, a random familiar will be spawned from the following:
???'s Only Friend
Angry Fly
Ball of Bandages
Big Fan
Bob's Brain
Brother Bobby
Cube of Meat
Demon Baby
Distant Admiration
Dry Baby
Forever Alone
Gemini
Guardian Angel
Halo of Flies
Headless Baby
Juicy Sack
Leech
Lil Brimstone
Lil Haunt
Little Chubby
Little Gish
Little Steven
Robo-Baby 2.0
Robo-Baby
Rotten Baby
Sissy Longlegs
Sister Maggy
Smart Fly
Succubus
Familiars spawned by Monster Manual only last for the current room.
Familiars spawned by Monster Manual last for the rest of the floor.
This item belongs to the Bookworm set. Collecting three items from this set will transform Isaac into Bookworm.
Notes[edit | edit source]
- It can spawn familiars not yet unlocked.
If Cube of Meat or Ball of Bandages are spawned and Isaac already has either of those items, the level of these items will increase for the current room.
- Using Monster Manual and enough batteries, Super Meat Boy and Super Bandage Girl can both be achieved in the same run.
- If Isaac does not already have the
Cube of Meat or
Ball of Bandages, Monster Manual can spawn a level 2 Cube of Meat or Ball of Bandages in one use.
If Cube of Meat or Ball of Bandages are spawned and Isaac already has either of those items, the level of these items will increase for the current floor.
- Using Monster Manual is a good method to unlock achievements related to Super Meat Boy and Super Bandage Girl.
- Using Monster Manual and enough Batteries, Super Meat Boy and Super Bandage Girl can both be achieved in the same run.
- If Isaac does not already have the
Cube of Meat or
Ball of Bandages, Monster Manual can spawn a level 2 Cube of Meat or Ball of Bandages in one use.
- Fly related items given by Monster Manual do not contribute to the Beelzebub transformation.
Mongo Baby will not copy familiars spawned by Monster Manual.
In-game Footage[edit | edit source]
Gallery[edit | edit source]
Trivia[edit | edit source]
- In the original The Binding of Isaac, due to a typing error this item was called Monster Manuel. This has been corrected for Rebirth.
Monster Manual may sometimes display the misspelled name when picked up.
- Monster Manual is a direct reference to Dungeons & Dragons. Its appearance in the game closely resembles the Advanced Dungeons & Dragons First Edition Monster Manual.
Seeds[edit | edit source]
PC HGN1 GBFC (Treasure room adjacent to spawn)
PC A6V2 BD1M (Treasure room adjacent to spawn)
PC RPFQ NXGG (Treasure room adjacent to spawn)
PC PSXL 8WRV (treasure room adjacent to spawn) (both modes)
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