Billed as the first adult animated series produced in-house by Netflix Animation,[17][2] it was announced in June 2021 that the regular characters in the series would be voiced by Andrew Daly, Bobby Lee, John DiMaggio, Tisha Campbell and Brett Gelman.[3] It is the first series produced as part of a deal Takeuchi made in 2018 with Netflix to "develop new series and other projects exclusively for Netflix."[18][19][6] A sneak peak of the series was shown at the Studio Focus Panel for Netflix at the Annecy International Animation Festival in June 2021.[9][5][20] The series is the first series created by Shion Takeuchi, part of her deal with Netflix,[17] with Hirsch saying he was inspired by 1990s shows like The X-Files.[7] Hirsch and Takeuchi were also inspired by pages of Weekly World News.[16]