Super Mario-Kun is a manga series which has been appearing in the pages of CoroCoro Comic since 1991. Created by Yukio Sawada, the series is coming to Super Mario Maker in the form of a special costume.
In addition to allowing his own unique take on the character to appear in the game, Sawada will also be designing his own level, which will be made available on November 6th. It's not yet known if the costume will also be made available on the same date.
Super Mario-Kun follows in the footsteps of Famitsu mascot Nekki and GameCenter CX's Shinya Arino, both of which are coming to Super Mario Maker as special costumes in Japan.