8 suggestions

Jim Carrey
as Old man mcgucket in Gravity falls

Alex Hirsch
as Bill cipher in Gravity falls

T.J. Miller
as Robbie in Gravity falls
JoJo Siwa
as Mabel in Gravity falls

Kevin James
as Soos in Gravity falls

Alia Shawkat
as Wendy in Gravity falls
Nick Offerman
as Grunkle stan in Gravity falls

Gaten Matarazzo
as Dipper in Gravity falls