Luigi

Luigi is the deuteragonist of the Mario franchise, and the protagonist of the Luigi’s Mansion spin-off. He's Mario's younger twin brother and sidekick.
== Why He's Number One ==
# Despite being player 2, Luigi has some things over Mario: he is faster, can jump higher, is taller, and has the power of lightning.
# He's usually willing to accompany Mario, although he has to be persuaded to do so every once in a while.
# Although he is a coward, Luigi is not afraid to risk his life to save others. In his first spin-off Luigi's Mansion, for example, he saved Mario from King Boo and overcame his fear of ghosts.
# Luigi has many famous catchphrases on par with the likes of his brother's, such as “Go Weegee!” being a notable example.
# He has a competitive demeanor, participating in many sports and the Olympics, but despite that, he's not really a sore loser.
# His kindness, clumsiness and admiration for his older bro makes him pretty relatable.
# His goofy personality.
# He would do anything to fight for others to save Mario and Peach, despite being afraid of the monsters he may find along the way.
# He has a strong brotherly love for Mario. In Paper Mario, he wrote in his diary how much he looks up to Mario and how much he wants to be like him.
# Even without Mario, he would save anyone no matter the costs. In Super Smash Bros. Brawl, he joined Ness and King Dedede to save everyone from Tabuu who put the universe at stake. (This was the same Tabuu who overpowered Master Hand, by the way.)
# Adorable love chemistry with Daisy.
# Good character design.
# Like Mario, Luigi has the strength to lift castles and the ability to use fire.
== Bad Qualities ==
# Despite his good traits, he can sometimes be a huge coward and can screw up, much to failure.
# In some of the games, he isn’t recognized by a lot of people as much as Mario (most notably in the Mario & Luigi series).
==Quotes==
*That's MAMA LUIGI to you, Mario! - Super Mario World cartoon
*I hope she made lots of spaghetti! - Hotel Mario
*I'm-a Luigi! Number one-a! - Mario Kart 64
* Maaaaariooooo! - Luigi's Mansion
*Ha-ha-haa! I'm the best! - Mario Party 3 
*Well hey, big brother! Fancy meeting you here! What a coinky-dink! - Paper Mario: The Thousand-Year Door
*Oh no, I don't give my name to scoundrels! Just watch as Luigi punishes you for your badness! - Super Paper Mario
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