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

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

Mario Kart 8 Deluxe's Wave 4 DLC adds Birdo, but also 5 blank character slots - Vooks

Mario Party 7 (GameCube, 2005) for sale online

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

On a scale of 1-10, how much would you rate the DLC characters we got for Mario Kart 8 Deluxe? : r/mariokart

OC] Drew my ideal Mario Kart 9 roster! : r/mariokart

Archives - Marooners' Rock

Source Gaming Presents: Nintendo Kart – Source Gaming

On a scale of 1-10, how much would you rate the DLC characters we got for Mario Kart 8 Deluxe? : r/mariokart

Characters - Mario Kart 8 Guide - IGN, mario characters

Mario Kart 8 Deluxe – Booster Course Pass, ST, Doubled Dash!! [WAVE 6 AVAILABLE NOW], Page 137

Luigi's Death Stare Appears In Official Mario Kart 8 Commercial - My Nintendo News

Mario Kart 8 DLC Coming In November, Features Zelda, F-Zero And Animal Crossing

Birdo (Mario Kart 8 Deluxe) by Rubychu96 on DeviantArt

Characters - Mario Kart 8 Guide - IGN, mario characters