Seto Kaiba is a prominent character in the Yu-Gi-Oh! series, known for his intelligence, wealth, and competitive nature. As the CEO of Kaiba Corporation, he revolutionizes the world of Duel Monsters with cutting-edge technology. Seto is characterized by his rivalry with the protagonist, Yugi Mutou, constantly seeking to prove himself as the superior duelist. Despite his cold and calculating demeanor, he deeply cares for his younger brother, Mokuba. Seto's character development throughout the series explores themes of ambition, pride, and the importance of family.