Luigi

Luigi  (Japanese: ルイージ,  Ruīji )  is Mario's younger brother. He is Mario's younger taller,skinnier,and thinner brother. He has lived in Mario's shadow for many years. He serves as Player 2. He is taller, thinner, and lighter. His favorite color is green and main weapon is a special vacuum, the Poltergust 5000 (previously Poltergust 3000) developed by Professor Elvin Gadd.

Mario Bros
Luigi first appeared in the arcade title, Mario Bros. He is basically the green Mario in this game. He serves Player 2. He has the same abilities and techniques as Mario. He isn't playable in 1 Player mode.

Super Mario Bros.
Luigi appears in the sequel of Mario Bros. ,Super Mario Bros. He is again Player 2. Luigi remains the same as Mario, the same abilities and techniques.He also has a different sprite.

Super Mario Bros. 2
Luigi is playable in Super Mario Bros. 2 with Peach, Toad, and his brother Mario. In the Japanese version, he is the best jumper and the most second weakest of the four the first being Peach.

Super Mario Bros.:The Lost Levels
This game was only avalible at Japan. This is the first game Luigi jumps higher than Mario. But Luigi stops running slower than Mario. He is not the 2nd Player. He is in Luigi Game mode. There are also two modes in the game. Mario Game mode, and Luigi Game mode. As the names implies, Mario Game features Mario playable and Luigi Game features Luigi playable.

Super Mario Bros. 3
Luigi is the same like in Super Mario Bros. 1. Except this time, he can use and hold more items. Again, he is only avalible through Co-Op / 2 Player mode.