User blog comment:PurplePenguin/The Grunkle Stan Mystery/@comment-187.194.93.9-20130417051457

I think grunkle Stan is "preparing" dipper and Mabel for something BIG that would happen in gravity falls. He knows something that is going to happen so he is preparing dipper and Mabel for it. Maybe he's not evil "Stan is not what he seems" doesn't means that Stan is evil. I think that he had a feeling that something was going to happen so he went to a secret society to be prepared. In the secret society they talked about a prophecy about twins that will stop the evil side in gravity falls. Stan knows that he has a niece and nephew twins and he brings them to gravity falls. Stan has all planed for dipper and Mabel to be prepared for destroying the evil. He goes every day to the hidden room behind the vending machine to check how the kids are going and how many days are left. But then dipper and Mabel meet Guideon and Stan is freaked out because Guideon is part of the society and wants to destroy them. So Stan must be kinda protecting dipper and Mabel of something he knows and the evil ones know too.