Why Waluigi and Rosalina deserve each other.

Bio: Waluigi.

What do we know about Waluigi? Sadly very little.

Waluigi was created during the development of the game Mario Tennis, as the bitter rival to Luigi. He was created by Fumihide Aoki and is voiced by Charles Martinet. His name is a portmanteau of Luigi's name and the Japanese adjective warui (悪い) meaning "bad"; hence, a "bad Luigi".

Early statements describe Waluigi as "Wario's brains"[citation needed]. He is said to be a mischievous, cunning man who dislikes the happiness of other characters. Martinet stated that the cornerstone of Waluigi's personality is one of self-pity, a character who feels that everything goes right for everyone but himself. As displayed in Mario Power Tennis and Mario Hoops 3-on-3, Waluigi features the ability to summon a body of water and swim towards each game's respective ball, which IGN editor Rob Burman describes as baffling.

He is the same age as Luigi, and wears black overalls, a dark purple long-sleeved shirt, a dark purple hat with a yellow "Γ" symbol, and white gloves with a yellow "Γ" symbol as well. When asked whether Waluigi was a brother to Wario, Martinet stated that while he did not know, he felt that they were just "two nice, evil guys who found each other."

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- Physical description and traits.

Waluigi's outfit includes a purple undershirt under usually dark purple overalls, orange shoes, and a purple cap that covers his short, brown hair. He has a large, pink nose, a thin mustache which is straight (horizontal) and pointed up at the edge, and gray eyes, his eyes being surrounded by light blue rings. He also has long limbs and a skinny torso. The yellow symbol on his hat and gloves is a vertical mirror image of Luigi's "L" which forms a "Γ", just as Wario wears a "W" in contrast to Mario's "M". The "Γ" is actually the Greek letter Gamma, which is pronounced similarly to "G".

Just like his partner, Waluigi is the extreme form of his rival. While Luigi is tall and skinny, Waluigi is taller and skinnier, just as Wario is short and obese in contrast to Mario. It has been stated that Wario routinely puts Waluigi on a rack to make him even taller. Luigi's facial elements are also exaggerated in Waluigi. Waluigi has a very sharp jaw and a pointy chin. Waluigi's sharp, handlebar mustache is an exaggeration of Luigi's soft and fluffy mustache. Many biographies describing him in Mario sports games mention (and poke fun at) his odd facial elements, including his sharp jaw, pointy nose, and flat feet.

Waluigi's clothing also is similar how Mario and Luigi's color scheme is somewhat the same. Mario and Luigi have the similar colored pants, with their signature colors being opposites (red and green). With Wario and Waluigi, the signature colors are still opposites (yellow and purple), and their pants are not exactly matching, but they are a different shade (most of the time) like Mario and Luigi's, as Luigi's pants are just slightly darker. On a side note, Waluigi has appeared wearing black pants at times.

Waluigi's outfit is sometimes referenced by the Mario Bros.. In Paper Mario: The Thousand-Year Door, by wearing both the "L" Emblem (Luigi) and the "W" Emblem (Wario) together, Mario will wear a purple undershirt and black overalls. The same can be done in Super Smash Bros. Brawl by switching Luigi's costume color.

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- Personality.

Waluigi is personified as a comic relief character and a boastful, ill-tempered foil to Luigi. He has bad chemistry with most other characters besides Wario, and is an openly rude and mean-spirited troublemaker. He has a perpetual scowl and is quick to anger, with earlier bios stating that he dislikes others being happy. In his one outing as a central antagonist in Dance Dance Revolution: Mario Mix, Waluigi claims that his reason for obtaining the Music Keys is to control and spread chaos across the world. In spinoffs, he often displays very poor sportsmanship, being quick to taunt his opponents and cheer for himself, while at the same time showing open resentment for any progress made by his opponents. His victory celebrations often highlight his self-aggrandizing nature and vanity, and occasionally contain vulgar elements as well.