Changes
→Design
Yami's pride is his greatest strength and weakness. Initially he refuses to lose games, without considering the consequences. This has caused him to almost kill [[Seto Kaiba]] by attacking him while he stood on a ledge and would fall if his monster was attacked and Yugi would have won the duel (in the Japanese version, Kaiba threatened to commit suicide should he lose). Yugi holds him back from such acts at times, but he is not always successful. Yugi becomes afraid to let Yami out for a while, because of the harm he could cause. During his duel with Rafael, Yami, albeit with great hesitation, eventually ignored Yugi's objections and used the Seal of Orichalcos rather than lose. Ironically, it was this action and Yami's subsequent corrupt actions during the duel would lead to one of his few defeats and the capture of Yugi's soul by Dartz. Yami expressed great grief and guilt following the battle due to Yugi's willingly suffering, which were because of Yami's actions. Learning how to lose becomes an essential part of Yami's journey, which he is tested in [[the Ceremonial Battle]].
Yami is also wise and intelligent. He knows all the rules and details of how the game is played, as well as those of all games. He also knows several special game techniques, such as the Double Hit dice roll technique, which, when two dice are used and the one with the weak spin stops first, lets him make the still spinning dice hit the one not spinning, allowing him to change its number, which is done by bumping the field with a body part, e.g the elbow. Yami is also capable of reading the ancient language of the Egyptians, figuring out the riddles or clues and what they mean.→
Through Yugi and his friends, Yami Yugi learns the values and powers of friendship and unity. After seeing Yugi overcome Marik in his Duel with Joey, who has been possessed, Yami thinks to himself, he learned something from Yugi; that in kindness lies the greatest strength of all; one day Yugi will surpass him in every way.<ref>[[Yu-Gi-Oh! Duelist - Duel 141]]</ref>