During the Nintendo Treehouse Live segment for Mario Tennis Aces, Nintendo revealed they’re adding Koopa Troopa and Blooper as playable characters in Mario Tennis Aces.

Koopa Troopa will be added in a free software update in July, followed by Blooper in August 2018.

Koopa Troopa and Blooper will be coming to #MarioTennis Aces as playable characters via free software updates in July and August! pic.twitter.com/L3wsj1BLU0

— Nintendo of America (@NintendoAmerica) June 13, 2018