The first season, consisting of ten episodes, premiered on Netflix on September 29, 2017, and the second season was released on October 5, 2018. Big Mouth explores puberty while embracing a frankness about the human body and sex. The series centers on teens based on Kroll and Goldberg's upbringing in suburban New York, with Kroll voicing his fictional younger self. Big Mouth is an American adult animated coming-of-age sitcom created by Andrew Goldberg, Nick Kroll, Mark Levin, and Jennifer Flackett provided by Netflix.