Project M features all 39 characters present in Brawl and Roy and Mewtwo from Melee. PMEX Remix expands on the roster and features over 120 characters, adding many (but not all) veterans from 3DS/Wii U and Ultimate and a number of newcomers.
- Project M Melee Veterans — For fighters that debuted in Smash 64 and Melee.
- Project M Brawl Newcomers — For fighters that debuted in Brawl.
- PMEX Remix Veterans — For fighters in PMEX Remix that debuted in Melee, 3DS/Wii U, and Ultimate.
- PMEX Remix Newcomers — For fighters that debuted in PMEX Remix and the mods it built on.