|Debut||Mario Tennis (2000)|
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. He is Luigi's evil rival, in the same way that Wario is Mario's evil rival. Along with this, Waluigi has a hat and gloves with a "Γ" gamma symbol, which is similar to Wario's "W", which is also an inverse or an upside-down "M". Unlike Luigi's green hat and shirt, Waluigi has a purple shirt and hat with black overalls, while his Γ symbol is yellow. He is believed to be Wario's younger brother (this is deconfirmed) as well as one of his many friends. Waluigi was created by Camelot's Fumihide Aoki and is voiced by Charles Martinet, like Wario and both Mario Bros. His favorite weapon is a Bob-omb.
Waluigi appears as a trophy in SSBM.
This tall, thin, evil-looking guy seems to be Luigi's rival. He works hard at his mischief: Waluigi reportedly spent a lot of time training for his debut in Mario Tennis by honing his ability to antagonize the Mario brothers. While it's general knowledge that he's the same age as Luigi, his relationship to Wario is unclear.
- Game: Mario Tennis (08/00)
As an Assist Trophy
Waluigi appears as an Assist Trophy in Super Smash Bros. Brawl. He has brown shoes instead of his usual orange shoes. When summoned, he dashes at a random opponent on stage and stomps them into the ground (although he can stomp multiple opponents at once if others around are caught in the stomps), in a manner similar to Donkey Kong's Headbutt or the Pitfall. He stomps the victim(s) multiple times before unleashing a finishing blow with his tennis racket or a kick. His kicks spike if the opponent is a little outside the stage. Unless he attacks constantly, his final attack has a pause which lasts about 3 seconds. Also, he is relatively easy to avoid on the stage, but chances are he is going to attack someone once.
Much like how Mario has a palette swap resembling Wario, Luigi gained a palette swap based off of Waluigi.
As a trophy
Waluigi also appears as a randomly collectible trophy:
- A twig-thin man who sees himself as Luigi's ultimate rival. He spent a long time working silently in the shadow of the Mario Bros. before finally becoming strong enough to compete with them in Mario Tennis. Since then, he's had many brilliant game appearances. While the nature of his relationship to Wario is a mystery, the pair have hatched some devious schemes together.
- Mario Tennis (2000)
- Mario Kart: Double Dash!! (2003)
- Mario Golf: Toadstool Tour (2003)
As a color change
Luigi possesses a black and purple color swap which gives him a similar appearance to Waluigi. The L on his hat also changes to yellow, just like Waluigi's inverted L. The L, however, doesn't flip itself like Waluigi's does.
Waluigi also appears as two stickers. One uses his artwork from Mario Superstar Baseball, and the other one uses his artwork from Super Mario Strikers.
Via the hacking program BrawlBox, hackers have succeeding in replacing the model for the Red Alloy with Waluigi's model. Additional hacks have smoothed out Waluigi's motions and given him some original animations. However, like the Alloy he is replacing, he cannot use special moves or grab ledges. A Youtuber named MarioKing64DS has shown a Waluigi mod with unique special moves and taunts. Earlier versions of the mod had Waluigi replace Pit, but the current version does not. It was released on January 1st, 2016.
Waluigi returns as an Assist Trophy once again, retaining all of the same attacks from Brawl, but he can be defeated if he has taken enough damage from attacks.
Luigi still possesses the Waluigi palette swap, but the yellow "L" is now purple. Mario gained a new palette swap based on Waluigi, which better resembles the character due to the "M" being yellow.
A crooked mustache and a long, red nose--Waluigi has "villain" written all over him. He considers himself Luigi's rival. He's cunning and quick. When summoned into battle, he'll rush the nearest fighters and stomp them into the ground--then thwack them with his foot or tennis racket!
- Strangely, during Super Smash Bros. Direct on April 8th, 2014, Waluigi appeared to be representing the Wario universe as opposed to the Mario universe. However, he has been changed back to the Mario universe as seen in his in-game trophy description.