Yugi Mutou (武藤 遊戯 Mutō Yūgi, Yugi Muto and pronounced "Moto" in the English anime) is the main protagonist of the story. He wears the Millennium Puzzle (千年パズル Sennen Pazuru ), one of the seven Millennium Items and an ancient Egyptian artifact holding the spirit of an ancient Egyptian pharaoh. When Yugi is playing a game or under stress, he becomes possessed by the 3,000-year-old (5,000 in the English anime) spirit inside the Millennium Puzzle, known as Yami(Dark) Yugi, changing his personality to a cold and confident person. Initially, Yugi could be described as soft-spoken, timid, meek, and shy, but as the series progresses, his character develops to the point where he has a much bigger presence and becomes more outspoken. He fears the other personality inside him at first, however, as the narrative progresses, he grows a strong bond with his other self and considers his other soul a close and valuable friend. One defining character moment for him was when he defeated an antagonist without Dark Yugi's help, Ryuji Otogi, in a game of Dungeon Dice Monsters (DDD in the manga) under bleak circumstances, proving that he is truly worthy of being the Millennium Puzzle's wielder.

In the first series anime, Yugi is voiced by Megumi Ogata. In the Duel Monsters anime, he is voiced by Shunsuke Kazama. In the English dub, he is voiced by Dan Green. 
Yugi Muto