The first time we ever saw Waluigi. When Mario Tennis hit Nintendo 64 on August 28, 2000, Camelot needed a doubles partner for Wario, so they inventively designed Waluigi as an “evil Luigi.” His look was a visual pun: Wario flips Mario’s M into a W, and Waluigi flips Luigi’s L upside down. That simple design choice gave us one of the most unforgettable spin-off characters in the franchise. The game sold over 2.3 million copies worldwide, making it one of the stronger sellers in the Mario sports