Solid-Stark on 31 January 2014
Tbh I'd hope everyone from Melee and Brawl return, plus new comers for a total of around 45.
Edit: If Nintendo treats this like Mario Kart, then we'll get about two-thirds for the portable.
e=mc^2
Gaming on: PS4 Pro, Switch, SNES Mini, Wii U, PC (i5-7400, GTX 1060)