This matchup chart is not 100% accurate. If you find something incorrect post reasons as to why you believe that certain matchup incorrect.
A= Advantage
D=Disadvantage
N=Neutral
Bowser 5.5-4.5 N
Captain Falcon 6.5-3.5 A
Charizard 5-5 N
Diddy Kong 4-6 D
Donkey Kong 45-55 N
Falco 3-7 D
Fox 5-5 N
Ganondorf 6.5-3.5 A
Ice Climbers 6-4 A
Ivysaur 6-4 A
Jigglypuff 6-4 A
King Dedede 3.5-6.5 D
Kirby 45-55 N
Link 5-5 N
Lucario 4-6 D
Lucas 5-5 N
Luigi 6-4 A
Mario 5-5 N
Marth 4-6 D
Meta Knight 3.5-6.5 D
Mr G&W 4-6 D
Ness 55-45 N
Olimar 3-7 D
Peach 5-5 N
Pikachu 4.5-5.5 N
Pit 4-6 D
R.O.B. 4-6 D
Samus 6-4 A
:shiek: Sheik 4-6 D
Snake 4-6 D
Sonic 5-5 N
Squirtle 6.5-3.5 A
Toon Link 4-6 D
Wario 4-6
Wolf 4-6 D
Yoshi 5.5-4.5 N
Zelda 6-4
Zero Suit Samus 4-6 D
A= Advantage
D=Disadvantage
N=Neutral
Bowser 5.5-4.5 N
Captain Falcon 6.5-3.5 A
Charizard 5-5 N
Diddy Kong 4-6 D
Donkey Kong 45-55 N
Falco 3-7 D
Fox 5-5 N
Ganondorf 6.5-3.5 A
Ice Climbers 6-4 A
Ivysaur 6-4 A
Jigglypuff 6-4 A
King Dedede 3.5-6.5 D
Kirby 45-55 N
Link 5-5 N
Lucario 4-6 D
Lucas 5-5 N
Luigi 6-4 A
Mario 5-5 N
Marth 4-6 D
Meta Knight 3.5-6.5 D
Mr G&W 4-6 D
Ness 55-45 N
Olimar 3-7 D
Peach 5-5 N
Pikachu 4.5-5.5 N
Pit 4-6 D
R.O.B. 4-6 D
Samus 6-4 A
:shiek: Sheik 4-6 D
Snake 4-6 D
Sonic 5-5 N
Squirtle 6.5-3.5 A
Toon Link 4-6 D
Wario 4-6
Wolf 4-6 D
Yoshi 5.5-4.5 N
Zelda 6-4
Zero Suit Samus 4-6 D