Super Smash Bros. Brawl/Mario
In a nutshell
Mario is ranked 31st on the current tier list, a middle position of G tier. Although he has some fast moves and good edge-guarding skills, he lacks a fast, reliable K.O. move, he has problems dealing with characters who have disjointed hitboxes (such as Marth) and he is easily gimped, due to his predictable recovery. Such factors contribute to his generally unfavorable matchups. Mario is considered a beginner character that people can learn with. This is due to him having no major size or speed flaws and is considered all around.