Definition 1- A sexy, tall 16/17 year old who's the CEO of Kaiba Corporation and has a condescending personality. He has a younger brother named Mokuba who's 11. Kaiba's first name is Seto, and his full name (Kaiba Seto) means "Sea-Horse-Shallows-Person". Kaiba enjoys duel monsters and is one of the best players in the world. He is Yuugi's greatest rival.
Definition 2- A certain someone's bishie (*coughcough*) (see definition 1).
D1- Kaiba is obsessed with defeating Yuugi in a duel fair and square.
D2- Better not kill Kaiba or a certain somebody will chase you forever until she catches you and murders you for destroying her bishie!