Playable Charcters
While Mario Party 9 does not feature as many playable chacters as the last Mario Party game, it does feature three all new characters that have not been playable before.
- Mario
- Luigi
- Peach
- Daisy
- Wario
- Waluigi
- Yoshi
- Birdo
- Toad
- Koopa (New!)
- Shy Guy (New!)
- Kamek (New!)
Boo, Dry Bones, Blooper, and Hammer Bro do not return as playable characters and instead play different roles in the game. Toadette does not appear in the game at all.
Bosses
Mario Party 9 features 12 different bosses used in the boss battle minigames.
- Lakitu
- Wiggler
- Whomp
- Big Bob-omb
- Dry Bones
- King Boo
- Cheep Cheep
- Blooper
- Spike
- Chain Chomp
- Bowser Jr.
- Bowser
Other Charcters
While these characters are neither playable or bosses, they do appear in Mario Party and serve some kind of role.
- Yellow Toad
- Blue Toad
- Green Toad
- Donkey Kong
- Diddy Kong
- Goombas
- Boos
- Bob-ombs
- Dry Bones
- Hammer Bros.
- Fire Bros.
- Cheep Cheeps
- Whittles
- Piantas
- Piranha Plants
- Bullet Bills
- Penguins
- Dolphins
- Mecha-Koopas
- Spinies
- Bob-ombs
- Monty Moles
- Mr. Blizzards
- Thwomps
- Seagulls
- Swoopers
- Sushi
- Huckit Crabs
- Fishbones
- Urchins
- Deep-Cheeps
- Buzzy Beetles
- Scaredy Rat