User blog comment:Guezz WUT24/Rumble's Revenge Cryptograms/@comment-5382349-20130118161328/@comment-5382349-20130118164033

Given the fact that cryptograms appear with the pyramid character, it could mean that the pyramid is the leader of the secret society, has been gone from Gravity Falls for some time, and does not want any of the books in Dipper's hands.