Gravity Falls, created by Alex Hirsch, sees the Pines twins — Dipper and Mabel ... supernatural in Gravity Falls, and their Grunkle Stan may be more in on this than he claims.

and was later officially revealed as Stan's secret twin in "Not What He Seems." The Book of Bill reveals that Ford still felt ...

Okay, okay, so maybe that last one isn't a universal experience, but for the main characters of Gravity Falls, twins Dipper and ... their Great-Uncle (or "Grunkle") Stan (voiced by Gravity Falls ...