Well, with the help of a friend (thanks Brian) and a dab of common sense, I now know that the "Pie-Eater" and "Big-Lips" Skilcraft figures are part of a series called the "Gross Out Gang." That explains the "GOG" on Big-Lip's pants pocket.
I don't have any info other than these pics I found online. Anyone know more about them or wanna sell them to me?
Looks like Pie-Eater guy is missing a cape