Well here's a upperclassman for Exodia Academy!

Exodia Academy: The Tinker’s Bio

Name: Leo Yoshihara
Nickname: The Tinker
Gender: Male
Grade: Junior
Age: 16
Rank: Raviel Blue
Favorite Type of Deck: Machine
Favorite card: VWXYZ Dragon Catapult Cannon

Personality/History: A bit on the weird side. He just loves machines and computers. He’s into dueling but not that much, he’s trying to make it as duel runner designer. Being raised in Japan he learned a lot about dueling and mechanics from his dad. Soon he saw someone bring in a duel runner. He was fascinated by it and took his time to learn as much as he can about them. Soon he learns of Exodia Academy and they have mechanic classes and a bunch of turbo duelists. What could be better? So after a long time of begging he finally convinced his parents to let him go. So soon after a couple of months he had an idea. He offered other students to help them with their duel runners, but it costs them but if they beat him in a duel he does it for free. So far he has a great duel record up to his junior year here in Exodia Academy and aims to keep it.