The series follows the adventures of Dipper Pines ( Jason Ritter) and his twin sister Mabel ( Kristen Schaal) who are sent to spend the summer with their great-uncle (or "Grunkle") Stan (Hirsch) in Gravity. Alex Hirsch Comic Art Member Gallery Results - Page 1. All Comic Art shown is owned or created by our Gallery Owners at ComicArtFans.com.