Yugi Mutou (武藤遊戯Mutō Yūgi) is a character in the Yu-Gi-Oh! manga. This is the original depiction of Yugi Mutou.
Yugi was a timid boy, who was frequently bullied and spent much time alone. However through gaining a number of friends, mainly Dark Yugi, Anzu Mazaki, Katsuya Jonouchi, Hiroto Honda and Ryo Bakura, he overcame his problems becoming stronger and more independent.
After solving the Millennium Puzzle, Yugi unknowingly shared his body Dark Yugi, the spirit of an amnesiac ancient Egyptian Pharaoh, who would protect Yugi and his friends through the use of Shadow Games. Yugi became aware of Dark Yugi, when he faced Death-T, a theme park designed by Seto Kaiba to kill the Yugis, and met Dark Yugi for the first time, when Dark Bakura separated Yugi's consciousness from his body in a game of Monster World.
Yugi helped Dark Yugi in winning the Duelist Kingdom tournament, to rescue his grandfather. He defeated Ryuji Otogi in Dungeon Dice Monsters by himself and reassembled the Millennium Puzzle inside a burning building to avoid losing Dark Yugi. Together the Yugis won the Battle City tournament.
The Yugis were separated when they entered the World of Memories. There Yugi helped Dark Yugi relearn his name, Atem, and defeat Zorc Necrophades. When they returned to the real world, Yugi defeated Atem in the Ceremonial Battle, a ritual necessary for Atem to pass on to the afterlife.