wait... you've unlocked 51 of them, did you fail to unlock others? you know they are waiting for a rematch for you in the top right area of the main menu... it's called something like challengers await, it's a rainbow coloured gate in the bottom right corner of the section called "games and more" sorry had to open my copy to see what the section was named.
Let me know if you have that waiting for you.
(just going to point out, the game did tell you about this, you just failed to read it lol, that's not the games fault, except for being too fun for you to stop and read a screen of text tips! also keep in mind that smash has over 60 characters unlockable by playing the game for a few days, Street Fighter V takes months to unlock 5 characters from those season passes, or you need to pay around 30e per 5 characters)
Why not check me out on youtube and help me on the way to 2k subs over at www.youtube.com/stormcloudlive
