Marios younger brother. Its pretty sad, because in the mario and luigi game on gameboy, when people see you they say "WOW!! Its mario and green dude!!". Often underestimated as a sidekick to mario but is actually better. He is not as fat, can jump way higher, and is much faster. He finally got recognized as a main characyer in the game Luigi's Mansion, a title released at the time of gamecubes launch. A mario game, super mario sunshine actuallt wasnt realeased until some time later.
by only$19.99,less s+h December 26, 2003
Player 2 in Mario Bros. Has since then gotten more and more personality, while Mario seems to have none.
by Fredde September 07, 2004
Mario's younger, taller brother who's fave color is green. Girlfriend is said to be Daisy of Sarasaraland.
by Princess Peach Toadstool June 07, 2003
Added to the end of a sentence, when in a conversation with a mate and in unusual company, to secretly direct your mate's attention to approaching person(s).
LUIGI = Look Up Instantly - Girls/Guys Incoming.
LUIGI = Look Up Instantly - Girls/Guys Incoming.
by noddy330 June 26, 2009
Luigi really isn't that underrated.
by MR. DOODID October 26, 2007
He is marios second hand man who always helps Mario in everything but dosen't get any credit, Mario gets coins and a kiss or cake when luigi dosen't get anything when he helped Mario in the first place.
by Randomguy78 March 27, 2013
by backstabing spy April 13, 2010