Key Items are very important items that are (in most cases) crucial to the game's progression. They cannot be used up or thrown away, though some are removed from the inventory after an important event. Below is a list of the Key Items in the Paper Mario series.
Paper Mario[]
A[]
- Artifact
- Autograph
- Autograph(Merluvlee's)
B[]
C[]
- Calculator
- Castle Key
- Castle Key(Bowser's Castle)
- Cookbook
- Crystal Ball
- Crystal Berry
D[]
E[]
- Empty Wallet
F[]
- Fertile Soil
- First-Degree Card
- Fortress Key
- Fourth-Degree Card
- Frying Pan
G[]
- Glasses
- Gold Credit
J[]
- Jade Raven
K[]
- Koopa Legends
- Kooper's Shell
L[]
- Letter
- Lucky Star
- Lunar Stone
- Lyrics
M[]
- Magical Bean
- Magical Seed
- Magical Seed 2
- Magical Seed 3
- Magical Seed 4
- Mailbag
- Melody
- Miracle Water
- Mystery Note
- Mystical Key
O[]
- Odd Key
- Old Photo
P[]
- Package
- Palace Key
- Prison Key
- Pulse Stone
- Pyramid Stone
R[]
S[]
- Scarf
- Second-Degree Card
- Silver Credit
- Star Stone
- Storeroom Key
T[]
U[]
V[]
- Volcano Vase
W[]
- Warehouse Key
- Water Stone
- Weight
Paper Mario: The Thousand-Year Door[]
- Cookbook
- Puni Orb
- Gold Whacka Bump (Nintendo Switch only)
- Super Luigi