Gina Gershon has been cast to play his mother but nothing of her really has been talked about since Jug and Archie planned to go to her while on their road travels. So wouldn't it make more sense to be someone that has been hinted at like Hal with the worshach and link to Black Hood? I like the theory and I think both are possible, so it's hard to say which way it will lead. Plus we know Jug has a sister as casting news has reported so to not have seen either of those characters as of yet, and then to just plug them into the roles of GK seems more far fetched because it has to be someone that was around G&G when FP and Alice were in high school and I don't remember any reference to Jugs mom at all.