Chinese Nintendo on Twitter: "Boo's S. Chinese name was first found to be changed in Mario Tennis aces, but it was still unknown at that time of the change was temporary or
Mario Tennis Aces Costume Ideas *MAJOR UPDATES* by KoopshiKingGeoshi on DeviantArt
Old favorites return in Mario Tennis: Ultra Smash – Destructoid
Mario Tennis Aces - ALL Tournament Trophies With Boo! [Nintendo Switch] - YouTube | Mario, Tournaments, Nintendo
Mario-Tennis-Aces-Boo – Nintendo Times
King Boo - Super Mario Wiki, the Mario encyclopedia