Mai Valentine
Mai, the "bombshell" blonde in the series, has one heck of an attitude. When she strives for something, she won't stop until she's got it. In Duelist Kingdom, this included cheating in duels. After her battle with Joey and then with Panik, she learnt friends aren't such a bad thing after all, and became a part of the gang; but as much s she bugs Joey, we all know she likes him.