A few days ago, Nintendo announced that several characters will be available as unlocks in the newest installment of the Mario Tennis series,
Mario Tennis Open. These characters will be unlockable through both gameplay and scanning of QR Codes. While it was not stated who would be unlockable, a recent update on the
Japanese Mario Tennis Open site confirmed that 7 characters can be obtained through the use of QR Codes. Although, it's implied that they may simply be alternate costumes. As well, QR Codes may award players with new costumes and gear, which can be worn by their Mii character. While it appears there might be a third feature involving QR Codes, details have yet to be added.
Along with the details on QR Code functionality, the characters page on the site has been updated, showcasing 4 newcomers to the court; Baby Mario, Baby Peach, Luma and Dry Bowser.