Waluigi

"'It's my Island!' -When on Waluigi Island" Waluigi is a recurring character from the Mario spin-off games. He is a counterpart of Luigi who works with Mario's own counterpart, Wario.

He is most prominently featured in the Mario Party 3 playthrough, where he is both ProZD's player character and an opponent faced in Story Mode.

Story Mode
During the Story Mode episodes, Waluigi challenged the player (ProZD as Wario) to a game on his own island, Waluigi's Island, for the Mischief Stamp. There, he displayed a very self-destructive mindset towards both explosives and medical advice. In that game, he coined the catchphrase "It's my island" as his excuse for practically everything that happened, even if it was to his detriment. He even said it about his refusal to see a doctor, after it was revealed that there was a puss-filled infection on his nose. Despite his mindset, it is shown Waluigi admires his companions, having an island for every other playable character, even creating a statue and a drawing for Luigi, much to his discomfort and confusion about who Waluigi is. Waluigi was said to be in love with Luigi, but he seems to be oblivious to it, due to Waluigi being tsundere about his feelings.

Party Mode
Waluigi is ProZD's player chosen character throughout the normal party maps. He ultimately ends up being the game's champion, with wins on three different maps.

The game starts when the Millennium Star crashes into the grounds of Princess Peach's castle, where all of the inexplicably composed group of friends were hanging out for the day. Everyone begins arguing over who gets to keep the star. Lakitu suggests a good old game of Mario Party to sort out the conflict, takes them into the toybox, and the game begins!

In Chilly Waters, Waluigi displays an immediate dislike for Donkey Kong despite never having met him before. He says that Wario told him all about Donkey Kong, including the fact that he's a little bitch. He also immediately starts bullying Luigi, saying that he [Waluigi] is a better version of him. He then agrees with Luigi's assessment that he is a gross monster. At one point after winning a 2V2 minigame, Waluigi is briefly nice to Donkey Kong and seems not to know who he is, going back on his previous statement that Wario told him about him. This may have been part of some sort of elaborate ruse to prevent Donkey Kong from targeting him. Later when Donkey Kong beats him in a minigame he says that they're not on good terms anymore, which Donkey Kong tries to remedy by challenging him to a duel game for one coin and inviting him to a farm to catch chickens. During one of the minigames, Waluigi nicknames himself "Speedboat Waluigi", which causes Luigi to accuse him of copying his nickname "Swift Boat Luigi", but Waluigi pretends to not know what he's talking about.

During a minigame in Deep Bloober Sea, Waluigi tries to use his plane to fly to Mars, but of course, it doesn't work. He maintains that he will get to Mars one day. He ends up winning this board, despite losing all of his coins and jumping off a flight of stairs on the final turn.

Although he won the championship with the second-to-last map, the final game was held on Waluigi's Island in order to determine the second-place winner. It was treated as Waluigi inviting everyone to his island to celebrate his victory. He was shown to have a crush on Daisy and rigged several of the game's events to end up in her favor. Sure enough, Daisy ended up winning the board. But like Luigi, Daisy was oblivious to his affections -- and Waluigi was also shown to be oblivious to Daisy's own relationship with Princess Peach!

Trivia

 * Waluigi keeps one of his pockets full of sweat and spaghetti at all times.
 * Waluigi, Wario, and Legolas from Lord of the Rings are brothers.
 * Whenever he sees anyone making out, whether if it's in a movie or Peach and Daisy making out in front of him, Waluigi assumes that they are just practicing kissing so that they can kiss him.
 * He has ultimately been stuck with the title of being a chump-ass bitch.
 * Waluigi considers himself a Princess Peach stan.

Quotes
Luigi: Who are you?

Waluigi: I'm you but stronger.

Luigi: Do you exist just because I exist?

Waluigi: Yes.

Luigi: ...what?

-Mario Party 3, Ep 1