Luigi
Much like his appearance, Luigi's voice has changed over the years. In Mario Kart 64, which voiced many characters for the first time, some characters had two different voices in relation to the region of the game. The North American and European versions of the game present a deep voice for Luigi, by Charles Martinet, who also voices Mario, Wario, Waluigi, and Toadsworth. The Japanese version uses a high, falsetto voice, by (then French translator at Nintendo) Julien Bardakoff. All forms of Mario Party present the high-pitched clips of Bardakoff from Mario Kart 64. Luigi kept this higher voice in Mario Party 2. In Mario Golf, Mario Tennis, and Mario Party 3 his voice returned to normal. Since then, in all games but Mario Kart: Super Circuit and Super Smash Bros. Melee, Luigi has always had a medium-pitched voice. In Mario Kart: Super Circuit, Luigi's voice was the same high voice from the Japanese Mario Kart 64. In Super Smash Bros. and Super Smash Bros. Melee, Luigi's voice is based on Mario's voice (with clips taken from Super Mario 64), with a higher pitch. In Super Smash Bros. Brawl, he has his own voice clips instead of voice clips taken from Mario.