During his Duel with the Sledgehammer, Yuya proved to be quite clever and skilled in Action Duels, having learned everything from his father.Similar to Yugi Muto, Yuya has a good deal of less self-confidence than the protagonists in the previous series.As such, when he finds himself cornered (for example when "Odd-Eyes Pendulum Dragon" was destroyed in his Duel against Sora Perse), or something happens that breaks his confidence (like when Declan and Sylvio used Pendulum Summoning), he tends to pull his goggles down so nobody can see his eyes.At times like these, he ends up recalling lessons from his father, or relies on support from his friends or his mother to regain his confidence and continue the Duel.
He also wears his gold and red lined white school jacket over his shoulders like a cape, in a similar manner to Yami Yugi.
However, confrontations with his dimensional counterparts and learning about the four dimensions as well as the crisis between them start making him doubt his ability to entertain people with Dueling.
His Duel against Iggy further hurt his optimism after Awakening and winning brutally using Yuto's card.
After winning the Friendship Cup, Yuya became the new Duel King of New Domino City. Yuya has dimensional counterparts: Yuri (Fusion Dimension), Yugo (Synchro Dimension), and Yuto (Xyz Dimension).
He is also one of Zarc's reincarnations, and later comes to assume Zarc's identity after merging with all of his counterparts.