Seto Kaiba, or just commonly referred to as Kaiba, is one of the main characters of the series. He is the older brother of Mokuba Kaiba. Priest Seto is his Egyptian incarnate. He is the majority shareholder and CEO of his own multi-national gaming company, KaibaCorp, and aims to become the world's greatest player of Duel Monsters. To accomplish this goal, he must defeat his arch-rival, Yuugi Mutou. He is the modern-day lookalike counterpart of Priest Seto himself, the original keeper of the mighty Blue-Eyes White Dragon.
Seto is largely considered an anti-hero, as his motives are usually ego-centric and his personality traits are selfish and arrogant, but he does sometimes help Yuugi and his friends if it's in his best interest. Although there are a few occasions when he helps Yuugi when faced with a common enemy. He also does appear to have ethics, as he does not believe in stealing from others to get ahead in life, proven in his duel against Zigfried. He has proven to strongly believe in hard work and determination, and dislikes people who steal or cheat.
Among one of the recurring plots is Seto Kaiba being forced to deal with either people adversely affected by Gozaburo Kaiba's actions, wanting to take their revenge on Seto himself, or people from within KaibaCorp attempting to take over the million-dollar corporation.