I could think of that in a day lol I also can think of my backstory right on the spot. So here it is.
Name: Flash Dreyar
Age: 17
Race: White
Parents: Laxus Dreyar (Yugioh Dimension)
Mirajane Dreyar (Yugioh Dimension)
Backstory: I was born into a rich family. The Dreyar family is rich and has power over many countries and lands. However my parents are always busy so I was always alone. The servants were the ones who took care of me and taught me various things. However during the times I wasn't learning, I was practicing dueling. I would always lose when I faced someone so I tried to stop dueling for a while, but I couldn't help it. My unique gift keeps me in the game. My gift is that I can see duel spirits, they were always around me. However one day I met a new duel spirit to which one I have never heard of. He said his name was Venom, and he wanted to be noticed and gain power beyond anything else. So I agreed to help him out, he gave me a new deck and then split into a few powerful monsters. When I used that deck against my friends, it not only beat them but the duel hurt them. So they became scared and didn't want to duel me. I though dueling would make lots of friends but yet in the end it just took that away from me. I was about to quit dueling when I came upon an ad for registrations to Duel Academy. So I signed up sending my parents an email about what I was doing, which they totally supported. So I'm here now trying my hardest to resist playing that deck while improving my dueling skills. I still have a lot of work to do.
This is not a good backstory since I came up with it on the spot. However that just sums up my characters life so yeah.