Mario Kart 8 Deluxe update adds 5 more extra character slots beyond Birdo

It would appear that Nintendo will include six new characters into Mario Kart 8 Deluxe

Super Mario All-Stars - Super Mario Wiki, the Mario encyclopedia

Birdo (Mario Kart 8 Deluxe) by Rubychu96 on DeviantArt

Squid Dude The Squid Chamber

Mario Kart 8 Deluxe update rebalances the game and adds 5 blank character slots

Why doesn't 'Mario Kart 8 Deluxe' have Birdo as a playable character? - Quora

Mario Kart 8 Deluxe DLC - Birdo Winning and Lossing Animations

Mario Kart 8 Deluxe's Character Menu Now Has Five Extra Spaces For Future Updates

Mario Kart 8 Could Be Getting 5 More DLC Characters - GameSpot

Birdo is coming to Mario Kart 8 Deluxe in Booster Course Pass Wave 4

Mario Kart 8 Deluxe Wave 4 Update Brings Balance Changes And Five New Character Slots - Gameranx

Mario Kart 8 Deluxe - 5 more Characters coming!

Mario Kart 8 Deluxe's latest update may hint at big DLC additions after Birdo - Dot Esports

Mario Kart 8 Deluxe – Booster Course Pass: Who are the mystery characters? – Trekking with Dennis

Mario Kart 8 Deluxe's new character select screen hints at more Booster Pass racers - Gamepur