When turmoil erupts in the Marioverse, Mario, Luigi, and other heroes arrive to solve the world's problems. Here is a list of heroes and their allies who fight against the forces of darkness.
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A
B
- Baby Luigi – Super Mario World 2: Yoshi's Island
- Baby Mario – Super Mario World 2: Yoshi's Island
- Baby Peach – Mario & Luigi: Partners in Time
- Baby Wario – Yoshi's Island DS
- Bazaar – Donkey Kong Country 3: Dixie Kong's Double Trouble
- Barney Bubble – Super Mario World 2: Yoshi's Island
- Beanbean Advisor – Mario & Luigi: Superstar Saga
- Blablanadon – Mario & Luigi: Superstar Saga
- Blooey – Paper Mario: The Thousand-Year Door
- Bob-omb Buddy – Super Mario 64
- Bobbery – Paper Mario: The Thousand-Year Door
- Bombette – Paper Mario
- Bootler – Paper Mario
- Bow – Paper Mario
- Brighton – Mario Party 6
- Bub-ulb – Paper Mario
C
D
- Darkly – Paper Mario: The Thousand-Year Door
- Dazzle – Paper Mario: The Thousand-Year Door
- Diddy Kong – Donkey Kong Country
- Dixie Kong – Donkey Kong Country 2: Diddy's Kong Quest
- Doctor Mario – Dr. Mario
- Dolphin – Super Mario World
- Donkey Kong – Donkey Kong
- Donkey Kong Jr. – Donkey Kong Junior
- Don Pianta – Paper Mario: The Thousand-Year Door
- Dragon – Yoshi's Story
E
F
- Fire God – Mario & Luigi: Superstar Saga
- FLUDD – Super Mario Sunshine
- Flavio – Paper Mario: The Thousand-Year Door
- Flurrie – Paper Mario: The Thousand-Year Door
- Francesca Pianta – Paper Mario: The Thousand-Year Door
- Frankie – Paper Mario: The Thousand-Year Door
- Frog – Super Mario RPG: Legend of the Seven Stars
- Frogfucious – Super Mario RPG: Legend of the Seven Stars
- Funky Kong – Donkey Kong Country
G
- Garro – Super Mario RPG: Legend of the Seven Stars
- General White – Paper Mario: The Thousand-Year Door
- Geno – Super Mario RPG: Legend of the Seven Stars
- Glimmer – Donkey Kong Country 2: Diddy's Kong Quest
- Glower – Donkey Kong 64
- Gooma – Paper Mario
- Goomama – Paper Mario
- Goombario – Paper Mario
- Goombella – Paper Mario: The Thousand-Year Door
- Goompa – Paper Mario
- Goompapa – Paper Mario
H
I
J
K
- Kalmar – Paper Mario
- Kiddy Kong – Donkey Kong Country 3: Dixie Kong's Double Trouble
- King Bowser – Super Mario Bros. (Bowser joins Mario in Super Mario RPG to defeat the evil Smithy)
- King K – Paper Mario: The Thousand-Year Door
- King Nimbus – Super Mario RPG: Legend of the Seven Stars
- King and Queen Nimbus – Super Mario RPG: Legend of the Seven Stars
- Klevar – Paper Mario
- Kolorado – Paper Mario
- Kooper – Paper Mario
- Koopley – Paper Mario: The Thousand-Year Door
- Koops – Paper Mario: The Thousand-Year Door
- Kroop – Paper Mario: The Thousand-Year Door
- Kylie Koopa – Mario & Luigi: Partners In Time
L
M
- Madam Merlar – Paper Mario
- Mallow – Super Mario RPG: Legend of the Seven Stars
- Mamar – Paper Mario
- Mario – Donkey Kong
- Mayor Dour – Paper Mario: The Thousand-Year Door
- Mayor Penguin – Paper Mario: The Thousand-Year Door
- Merle – Paper Mario
- Merlee – Paper Mario
- Merlon – Paper Mario
- Merlow – Paper Mario
- Merluvlee – Paper Mario
- Metal Mario – Super Mario 64
- Minh T. – Paper Mario
- Misstar – Paper Mario
- Miss Warp – Yoshi's Story
- Moustafa – Paper Mario
- Ms. Mowz – Paper Mario: The Thousand-Year Door
- Muddy Buddy – Super Mario World 2: Yoshi's Island
- Muskular – Paper Mario
- Mushroom Retainer – Super Mario Bros.
N
O
P
- Pa-Patch – Paper Mario: The Thousand-Year Door
- Parakarry – Paper Mario
- Parry – Super Princess Peach
- Pauline – Donkey Kong
- Pennington – Paper Mario: The Thousand-Year Door
- Petuni – Paper Mario: The Thousand-Year Door
- Petunia – Paper Mario
- Pianta – Super Mario Sunshine
- Podley – Paper Mario: The Thousand-Year Door
- Poochy – Super Mario World 2: Yoshi's Island
- Posie – Paper Mario
- Prince Peasley – Mario & Luigi: Superstar Saga
- Prince Pine – Yoshi's Safari
- Princess Daisy – Super Mario Land
- Princess Éclair – Paper Mario: The Thousand-Year Door
- Princess Peach – Super Mario Bros.
- Professor Elvin Gadd – Luigi's Mansion
- Professor Frankly – Paper Mario: The Thousand-Year Door
- Pungent – Paper Mario: The Thousand-Year Door
- Puni Elder – Paper Mario: The Thousand-Year Door
- Punio – Paper Mario: The Thousand-Year Door
- Puniper – Paper Mario: The Thousand-Year Door
Q
R
S
- Screamy – Paper Mario: The Thousand-Year Door
- Sergeant Flutter – Super Mario RPG: Legend of the Seven Stars
- Skolar – Paper Mario
- Space Rabbit – Super Mario Galaxy
- Spriteling – Wario World
- Stanley the Bugman – Donkey Kong 3
- Star Spirits – Paper Mario
- Starshade Bros. – Mario & Luigi: Superstar Saga
- Stuffwell – Mario & Luigi: Partners in Time
- Subcon – Super Mario Bros. 2
- Sushie – Paper Mario
- Squawks – Donkey Kong Country
- Squitter – Donkey Kong Country 2
- Swanky Kong – Donkey Kong Country 2: Diddy's Kong Quest
T
- Tayce T. – Paper Mario
- TEC-XX – Paper Mario: The Thousand-Year Door
- The Stork – Super Mario World 2: Yoshi's Island
- Thunder God – Mario & Luigi: Superstar Saga
- Tiny Kong – Donkey Kong 64
- Toad – Super Mario Bros.
- Toad (species) – Super Mario Bros.
- Toadbert – Mario & Luigi: Partners in Time
- Toadette – Mario Kart: Double Dash!!
- Toadiko – Mario & Luigi: Partners in Time
- Toadsworth – Super Mario Sunshine
- Torque – Paper Mario: The Thousand-Year Door
- Twila – Mario Party 6
- Twilight Towner – Paper Mario: The Thousand-Year Door
- Twink – Paper Mario