Luigi Mario (Japanese:ルイージ) is Mario Mario's younger brother in the Nintendo video games. He first appeared in Mario Bros as the second player. His role as the second player continued in Super Mario Brothers, Super Mario Bros 3, and Super Mario World.
In the remake of Super Mario World for Game Boy Advance, Luigi is slightly more integral; you have a choice between Mario or Luigi. Luigi can jump higher and run faster, and he is designed to be the easier character to play as.
In Super Mario Bros 2 he was one of the characters you could control, characterized by a hovering jump. This feature made him quite popular amongst fans of the games. Luigi has starred in two games, one is titled Luigi's Mansion and was released for the Nintendo GameCube. The other one is called Mario is Missing and was released for the Super Nintendo and PC. It was a fairly lackluster game, involving Luigi traveling throughout the world and answering questions related to famous area he was in (Japan, Russia, etc).
Luigi is also a hidden character in the N64 hit Super Smash Bros, and its GameCube sequel Super Smash Bros. Melee. He is a replica of Mario. His Green Missile move is an addition to Super Smash Bros. Melee. It is similar to Pikachu's Skull Bash. His taunt pose is the only taunt pose in the game that inflicts damage; it inflicts 1% damage. Unlike Mario's fireballs, Luigi's fireballs are not affected by gravity.