Mai Valentine is a confident and skilled Duelist in the Yu-Gi-Oh! anime series. Known for her beauty and sharp wit, she initially appears as a rival to the main characters but gradually becomes a trusted ally. Mai specializes in using the Harpie Lady deck and demonstrates both cunning and determination throughout her journey. Her character arc explores themes of independence and friendship, making her a memorable presence and a key player in many pivotal duels across the series.