User blog comment:PurplePenguin/The Grunkle Stan Mystery/@comment-98.178.196.197-20130428234052

stan obivously has a secret, but the creaters cant make him turn out to be evil ( they would receive a lot of criticism if they did ), in the theme song where they show the stan-bigfoot and the "stan is not what he seems" made me think the later they might reveil A. the door might have lead to a lab or something where he can make people like the mystery shack to spend money there, as in the first episode dipper said he wonders why people like it, or 2. in the world of gravity falls there is also a bigfoot and stan turns out to be that bigfoot. those are my only 2 guesses