I read in my manga that Kaiba’s character is based on this asshole who claimed to be a trading card fanatic and told Takahashi’s friend that he would only teach him how to play his games if he (the friend) collected 10,000 cards. Takahashi thought this guy was a total bastard but realized that he would make a great character. Voila, Kaiba!

Moral of the story? Be an asshole, and you might get a really sexy anime character modeled after you.