The Legend of the Gobblewonker

"The Legend of the Gobblewonker" is the second episode in Season 1 of Gravity Falls. It will air on June 29, 2012.

Plot
The twins embark on a mission to prove that a legendary sea monster exists at the bottom of the local lake.

Cast

 * Kristen Schaal as Mabel Pines
 * Jason Ritter as Dipper Pines
 * Alex Hirsch as Grunkle Stan/Soos
 * Linda Cardellini as Wendy