Gravity Falls

Gravity Falls is an American animated mystery comedy television series created by Alex Hirsch for Disney Channel and Disney XD. The series ran from June 15, 2012, to February 15, 2016.

Background
Comedian Louis C.K.'s voice was originally featured in the season 2 episode "Weirdmegeddon Part 1" as The Horrifying Sweaty One-Armed Monstrosity during its original 2015-2017 airing. In late 2017, however, C.K. admitted to sexual misconduct, therefore Disney had the character's voice dubbed over by series creator Alex Hirsch. All reruns, online streams, and home video releases only feature the re-dubbed version, the original version of the episodes with C.K.'s voice left intact can still be found on pirated websites.