User blog comment:Guezz WUT24/Rumble's Revenge Cryptograms/@comment-67.54.166.74-20130221220526

2

The seventh whatever-

"Michief is my middle name.  But not my first."

I believe this not to be helpful but to mean that each of these things are hints to who is telling us this. Or maybe we're to find out if someone actually has the middle name "Mischief". That would be unfortunate for them, but lucky for us. Still, this is most likely a phrase meaning that the sender is mischievious and a trouble maker. We know that the sender is not currently in Gravity Falls but once was. I do wonder....