Editing Mai Valentine (section)

=== Battle City ===
During the Battle City tournament, Mai won enough Duels off-screen to qualify for the quarter-finals. She helped Yugi and Joey's friends ([[Serenity Wheeler|Serenity]], Tristan, and Duke) by driving them to Yugi and Joey's Duel at the pier and shared her knowledge about the Rare Hunters, describing them as a group that lies, cheats, and steals rare cards.

Before the quarter-finals, Mai met Jean-Claude Magnum again. Initially not recognizing him, she remembered his earlier marriage proposal and her response to come back as a better Duelist. Magnum insisted on Dueling her again with the condition that if he won, she would marry him. Mai won, but Magnum tried to kidnap her in desperation using a hang glider. Mai nearly fell to her death but was saved by Joey.

In the quarter-finals, after Joey lost consciousness in his Duel with [[Odion Ishtar]], he dreamed about his friends, which helped him regain consciousness. When Mai asked if she was in his dream, Joey lied and said she wasn't, which infuriated her. Ignoring her friends' help and support, Mai proceeded to Duel [[Marik Ishtar]] in the next round.

During the Duel with Marik, Mai initially took the upper hand, even managing to steal Marik's Egyptian God Card, "[[The Winged Dragon of Ra]]," using "Amazoness Chain Master." However, Marik used his Millennium Rod's powers to transform the Duel into a Shadow Game (a "Yami no Game" in the Japanese version). In this version of the Duel, whenever one of Mai's monsters was destroyed, she lost the memory of a friend.

Toward the end, Mai was in a winning position with three copies of "Cyber Harpie" but attempted to summon "Ra." Unfortunately, the card appeared in Sphere Mode because Mai was not one of the chosen ones with the power to control it, and she could not read the Hieratic text to unlock "Ra." Marik used this opportunity to return "Ra" to his side by reading the text. As her feelings of loneliness returned, Yugi encouraged her to keep going. Joey rushed onto the field, trying to stop the Duel, and broke through to Mai, restoring her memory of him. Marik was shocked that their bond of friendship was strong enough to resist his powers. However, Mai ultimately lost to Marik.

In the English dub, Mai was sent to the Shadow Realm after losing to Marik. In the Japanese version, she was trapped within her own mind and subjected to severe mental assaults. After Marik's defeat, Yugi saved her. In the anime, she pretended to still be trapped in her mind, much to Joey's concern, but eventually, she revealed she was fine, laughing at Joey's worry.

After the tournament, Mai parted ways with Joey and the others, realizing they were her true and closest friends but feeling the need to move on in her journey.