My guess for how Smash Ultimate’s DLC will come to pass:
Persona also gets a shop in the currently inactive middle slot, run by Munehisa Iwai. The next 4 characters are Kalas, Prinny, Dovahkiin, and Razputin. After Raz is revealed there will be a poll, and Sakurai warns there will be severe penalties for those who submit non-VG characters. So many people submit obvious blacklisted characters like Shrek that Sakurai flips. All accounts who voted for Shrek or Spongebob are permabanned, while Sakurai selects Goku from Ganso Saiyūki: Super Monkey Daibōken as the first character and his announcement mocks those who picked Goku. Then reveals it to be an April Fools joke. The real first character is chosen arbitrarily from the top 5 legal characters, and turns out to be Crash Bandicoot. Sakurai announces the other four characters will be chosen at complete random. Over the next five months they’re revealed to be Aiai, Lulua, The Sole Survivor, and Yuri Lowell. The respective stages are Warp Room, Bad-Boon’s Base, Lulua’s Workshop, Vault 88, and Zaphias. New to the series, each one also includes an assist trophy, respectively N. Tropy, Bad Boon, A puni swarm, Dogmeat, and Repede. Yes, that’s twice the dog.