Seto Kaiba is an important character in this anime. He is the CEO of his own company and is really rich. His passion is duel monsters and after Yugi beats him he looses it. One of the things he lives to do is beat Yugi after Yugi beat him.
Kaiba also has a little brother named Mokuba. When they were young their parents died so they had to go to an orphanage. Kaiba promised to always protect his little brother and after Pegasus kidnapps him he swears to to anything to get him back.
