This is an interview conducted by Sega.com, with Yuji Naka, the creator and mastermind behind Sonic, published on the Sonic Central website in January 2004. It has been reformatted for better readability.
Sega.com: When Sonic and his friends sit down to eat after a long hard day of chasing Dr. Eggman, what do they like to eat?
Yuji Naka: They probably eat McDonald's® hamburgers, I suppose? And I think they will get a complete line-up of Happy Meal® premiums.
Sega.com: We get a whole lot of letters on this one: Do you think Sonic and Amy Rose will ever get married?
Yuji Naka: There will be hardly be any chance, I bet. Amy will continue to pursue Sonic all the time, but Sonic will not ever get married. I think so, because I cannot picture the image of Sonic that he is married and has his children! Also, I feel it is a more Amy's style to always chase Sonic.
Sega.com: Is Sonic excited about being on all of the platforms in Sonic Heroes? What about it thrills him the most?
Yuji Naka: Of course he is excited, because more people than ever before will enjoy his game. He seems thrilled to be able to run on the various platforms!
Sega.com: What is Sonic's favorite thing to do in his free time?
Yuji Naka: ...I feel certain that he is running somewhere, because he loves running.
Sega.com: Sonic sure is busy -- how many hours of sleep does he need per night?
Yuji Naka: Hmm, I suppose he sleeps the ordinary eight hours a night or so, because unless he sleeps well, lack of sleep will affect his run...
Sega.com: Did Sonic have a hand in changing Dr. Robotnik's name to Dr. Eggman for the United States games? If so, was he trying to make fun of his nemesis?
Yuji Naka: To tell the truth, his name has not changed. Robotnik is his real name and Eggman is a common name taken after his shape. Possibly, it may have been Sonic, who uttered this alias for the first time! I feel, though, Sonic uses this name affectionately, rather than trying to make fun of him.