Gravity Falls

Gravity Falls is an American animated comedy/sitcom from creator/executive producer/writer/director Alex Hirsch which follows city kids Dipper (voiced by Jason Ritter) and Mabel Pines (voiced by Kristen Schaal), who are sent to spend the summer with their eccentric Great Uncle Stan, aka Grunkle Stan (voiced by Hirsch), who runs a tourist trap called The Mystery Shack in a remote northwestern town where nothing is what it seems.  With creatures in the forest, monsters in the lake and time travel a possibility, things get very interesting for the twins as they quickly realize they need each other, in order to unlock the secrets of the quirky and mysterious town.
Characters.
Protagonists.
Dipper - The 12 (13 at the end of the series) twin brother of Mabel Pines and a curious boy who is in love with Wendy Corduroy. He is the pinetree in the Zodiac wheel.
Mabel - The 12 (13 at the end of the series) twin sister of Dipper Pines and spends most of the time having fun with her best friends Candy Chiu and Grenda.
Stanley Pines (also known as Stanford Pines early in the series) - The CEO of the Mystery Shack (until Weirdmageddon III: Take Back the Falls) and is the great uncle of twins Dipper and Mabel Pines. He is also the twin brother of Stanford Filbrick Pines Ph.D, also known as the Author.
Soos - he is an awkward, lovable man-child (who works as the current owner of the Mystery Shack at the time of Weirdmageddon III : Take Back the Falls) and frequent sidekick of Dipper and Mabel on their various adventures. He is one of the main characters of Gravity Falls. He is the question mark on the Zodiac wheel.
End.
Alex Hirsch