Waluigi
has so far only appeared in spin-off and party games, as opposed to the main platformer titles, save for a few negligible cameos. Waluigi has a very crude and arrogant attitude, usually showing poor sportsmanship and is thought to cheat often in sports. He is the same age as Luigi and is his darker rival, in the same way that Wario is Mario's darker rival. Waluigi has a hat and gloves with an inverted L, which is similar to Wario's "W", an inverted "M". Waluigi's relation to Wario remains largely unknown, as some sources indicate he is his brother, though others contradict this. Waluigi was created by Camelot's Fumihide Aoki and is voiced by Charles Martinet. Waluigi's first appearance was in the Mario Tennis games for the Game Boy Color and Nintendo 64, as Wario's doubles partner, and then in 2005 on Mario Tennis: Power Tour for the Game Boy Advance. Later, along with Princess Daisy, he joined the Mario Party series's roster in Mario Party 3, which popularized him as a member of the Mario Crew; he has been a playable character in every main entry in the series since. He's since also appeared in various other sports games and Mario Kart DS. He and Wario were also the main characters of the intro movies to Mario Golf: Toadstool Tour and Mario Power Tennis. He acts as the main antagonist in Dance Dance Revolution: Mario Mix, in which he wreaks havoc in the Mushroom Kingdom by stealing the Music Keys in order to hypnotize the world with his dancing, thus enabling him to conquer it.
This is a idiot picture of Waluigi. I just felt like putting it in.