If you don't want to reset everything but just want the two secret characters:

Because Mario Kart DS lacks an official QR-import feature, you’ll use community workflows:

Fans frequently convert real-world pixel art and QR codes into standard Mario Kart DS custom emblems.

Mario Kart Ds Qr Code [exclusive] -

If you don't want to reset everything but just want the two secret characters:

Because Mario Kart DS lacks an official QR-import feature, you’ll use community workflows: mario kart ds qr code

Fans frequently convert real-world pixel art and QR codes into standard Mario Kart DS custom emblems. If you don't want to reset everything but