Who is Dennis Ouyang from Level Up and what is their importance?

Dennis Ouyang was only an eight-year-old boy when he became enchanted with video games. His parents were strict and didn't give him any money to play at the arcade. But that didn't stop him from worshiping PAC-MAN and Super Mario Brothers. Although he was grief-stricken, the first thing Dennis did after his father died was to purchase a video game system.