Ray and May are the twin children of Holleen Mills, the #5 duelist in Neostar City as well as a famous show host. They are both 8 years old, but are still very good at Duel Monsters. Because they love their mom and want to be as entertaining as her, they copy her mannerisms and her dueling style. Ray is a more reserved boy, while May is a more spunky girl. Their mom is a single mom, so Ray and May are growing up without a father. They always cheer for their mom when she duels on TV.