Board Thread:General Discussion/@comment-12265996-20141202030018/@comment-5475153-20141202231500

I'd support possibility 1; 2, 3, and 5 seem rather unlikely; and future Dipper, well, Disney XD did reference it in a promo for "Society of the Blind Eye."

Personally, I'm leaning most toward Stan (i.e., the Grunkle).