User blog comment:D-Code25/Theories/@comment-4971712-20120702223231

At this point, I think the best guess is Stan, considering the "Stan is not what he seems" and the lack of many potential suspects. There is almost no information about their father so far, so I don't think he could be a viable candidate as of now. Saber Sworn  22:32, July 2, 2012 (UTC)