Waluigi is a fictional character from the Mario series who appears in the spin-off sports and party games (as opposed to the main platformer titles). He is supposedly Wario's brother (by fanon), and is Luigi's evil counterpart. He first appeared in Mario Tennis.
Games with Waluigi
A trophy of him can be obtained in Super Smash Bros. Melee.
Also, in Paper Mario: The Thousand-Year Door, when Mario puts on the W Emblem and the L Emblem at the same time, he changes into Waluigi's clothes.
Waluigi wears a Γ. Mario's evil counter-part, Wario, wears a "W", which is also an upside-down "M". Likewise, Waluigi is noted as Luigi's evil counter-part, and this is most likely the reason that he wears an "Γ". Nintendo also flipped the "L" over so then the symbol on his hat would not resemble a "7".
Waluigi's Name
Waluigi's name has a dual-meaning in Japanese. The Japanese word "warui" (悪い) means "bad" or "evil". This means that Waluigi's name is a portmanteau of warui and Luigi (the Japanese R sound is in-between the English L and R sounds, and is an L in some Romaji systems), and essentially means "Evil Luigi".
Also Waluigi is an anagram of "igiwalu". This is the Japanese word for mean-spirited (usually spelled "ijiwaru").
