Binding of Isaac: Rebirth Wiki
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(except in Rebirth)

After obtaining three mushroom items from the following list ((in Repentance) 3 items with the mushroom item tag), Isaac turns into a walking Mushroom and grants a Red Heart Container.

Active Collectibles[ | ]

Name ID Icon Quote Description (in Repentance) Quality
(in Repentance) Mega Mush 5.100.625
Mega Mush
12 rooms
I'm a big boy now! Gigantifies Isaac for 30 seconds, increasing damage and range while lowering tears, granting invulnerability, and allowing Isaac to crush enemies and obstacles he walks on. The effect persists between rooms. 4
(in Repentance) Wavy Cap 5.100.582
Wavy Cap
0
Tears up. A mind changing experience! Increases fire rate, decreases speed, and distorts the screen. All effects become more pronounced with repeated use, and wear off by clearing rooms. 1

Passive Collectibles[ | ]

Name ID Icon Quote Description (in Repentance) Quality
1up! 5.100.11 1up! Extra life Gives Isaac an extra life. Upon death, he will respawn in the previous room with full health, after which 1up! will disappear. 2
Blue Cap 5.100.342 Blue Cap HP + tears up + shot speed down Gives one full Red Heart container, +0.7 tears, and -0.16 shot speed. (in Repentance) Heals 1 additional Red HeartRed Heart. 3
Magic Mushroom 5.100.12 Magic Mushroom All stats up! (except in Repentance) Makes Isaac bigger. Adds one Red Heart Container, +0.3 Damage, x1.5 damage multiplier, +5.25 Range, +0.3 Speed, and restores all Health.
(in Repentance) Makes Isaac bigger. Adds one Red Heart Container, +0.3 Damage, x1.5 damage multiplier, +2.5 Range, +0.3 Speed, and restores all Health.
4
Mini Mush 5.100.71 Mini Mush Speed + range up Decreases Isaac's size, making him less likely to be hit. (except in Repentance)+0.3 speed, +1.5 tear falling speed, -4.25 range (effective range is increased). (in Repentance) +0.3 speed, +2.5 range. 2
Odd Mushroom 5.100.121 Odd Mushroom HP + DMG up, speed down (except in Repentance) Grants one empty Heart container, +0.3 damage, +0.25 range, +0.5 tear falling speed, and -0.1 speed.
(in Repentance) Grants one full Heart container, +1 damage, +1.5 range, and -0.2 speed
2
Odd Mushroom 5.100.120 Odd Mushroom Tears + speed up, DMG down +1.7 tears, +0.3 speed, slightly reduces damage. 2
God's Flesh 5.100.398 God's Flesh Shrink shot! Tears have a chance to shrink enemies, making them run away from Isaac. Shrunk enemies can be crushed and killed by walking over them. 1
(in Repentance) Mucormycosis 5.100.553 Mucormycosis Spore shot Gives Isaac the chance to fire spore tears that stick to enemies and blow up after a few seconds, dealing damage and poisoning nearby enemies and releasing more spores. 3

Trivia[ | ]

  • The name Fun Guy is a slang term for psychedelic Psilocybin mushrooms and a wordplay on "fungi".
  • Fun Guy's appearance may be a reference to the character Toad, a humanoid mushroom from the Super Mario franchise.


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