Dipper and Mabel vs. the Future

Summary

Mabel makes plans for her and Dipper's 13th birthday party; Dipper ventures below the town and discovers its most shocking secret.

Guest stars

• Carl Faruolo as Grenda (voice)
• J.K. Simmons as Stanford Pines (voice)
• Mike Rianda as Lee / Thompson (voice)
• Matt Chapman as Sprott (voice) / Additional Voices (voice)
• Justin Roiland as Blendin Blandin (voice)
• Niki Yang as Candy Chiu (voice)
• T.J. Miller as Robbie Valentino (voice)