The main characters of "Big Mouth," an adult animated coming-of-age series, include:
- Nick Birch: Voiced by Nick Kroll, he is a late bloomer navigating adolescence. Kroll also voices several other characters, including the hormone monsters Steve and Rick and the popular girl Lola.
- Andrew Glouberman: Nick's best friend, voiced by John Mulaney, who is ahead in puberty and often preoccupied with masturbation.
- Jessi Glaser: Voiced by Jessi Klein, one of the main adolescent characters dealing with puberty challenges.
- Jay Bilzerian: Voiced by Jason Mantzoukas, a friend in the group known for wild behavior.
- Maurice "Maury" the Hormone Monster: Voiced by Nick Kroll, he represents Andrew's sexual urges.
- Coach Steve: Voiced by Nick Kroll, the incompetent middle school gym teacher.
- Other notable characters include Matthew MacDell, Marty Glouberman (Andrew’s father), Shannon Glaser (Jessi's mother), and Missy’s hormone monstress Mona.
The show features a broad cast of adult comedians voicing these adolescent characters and fantastical hormone monsters. It humorously explores puberty and the complexity of growing up with a surreal, adult-oriented style.
If more detailed information about specific characters or additional minor characters is desired, that can be provided as well.