Andy Galvin♂

Andy is a seven-year-old boy who lives in the house next to Harry and Cheryl Mason. He is the main character of four scenarios that could be downloaded into the Silent Hill: Play Novel cartridge via cellphone. The four scenarios were named for each of the seasons: Spring, Summer, Fall and Winter.

Since the service no longer exists, the only information available on Andy is in the Play Novel Official Guidebook, which only gives details of the Spring Scenario. (spoiler hidden)

[From Silent Hill Wiki]