Evolution of Boo in Mario Tennis (2000-2019) - YouTube
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: First Details on Boo Hunt and Unlockable Boo Costumes - Miketendo64
Ranking The Original 'Mario' Characters By How Thicc They Are