The Son is the protagonist, I think. He is new to the internet, and is trying to get a clear picture of what it really is.
A sort of self-proclaimed fountain of knowledge, who really isn't that smart at all. The sort of blind optimist that you used to get in the 90's, with a "the Way of the Future"-type attitude. The kind of guy who spouts "Technology will save us!" whenever something remotely challenging comes along. He dresses in a very conservative 1950's manner.
Cornball is kind of bombastic and egotistical, a self-proclaimed expert. As the first person that The Son meets on the internet, he takes in upon himself to be his guide. He'd wear very slick, very modern street fashions.