Koopa Troopa and Blooper are joining the roster in Mario Tennis Aces. The two characters will be unlocked by playing in the online tournaments. Koopa Troopa will be yours if you play between July 1 and July 31, 2018 and Blooper will be yours if you play the online tourney from August 1 through August 31, 2018. Both characters will be made available after the online tournaments end (August and September respectively). Check them out in action!