Mabel Pines of Gravity Falls (voiced by Kristen Schaal), is the 12-year-old twin sister of Dipper Pines.
Mabel is an eccentric, buoyant, and an energetic optimist, who expresses herself through an assortment of extremely colorful knitted sweaters as well as skill at various arts and crafts. Her outgoing, curious personality often helps Dipper solve mysteries, though her silliness is often seen as a burden.
Mabel enjoys preteen novels and seeks romance (especially in vampires). Despite what she sees as dating obscurity in Gravity Falls, Mabel stays optimistic. She once went out on a date with Li'l Gideon, but this did not continue after Li'l Gideon attempted to kill Dipper. In the episode "Irrational Treasure", she is made an official U.S. congresswoman by the eighth-and-a-half president, Quentin Trembley, with a political platform of "legalizing everything". She wins a pet pig in the episode "The Time Traveler's Pig" and names it Waddles. She also makes guest appearances in "Dipper's Guide to the Unexplained," but also has her own series titled "Mabel's Guide to Life." Both of these shows aired in between seasons.