Big Mouth Cast Overview and How to Read This Guide
This guide explains the core Big Mouth cast, distinguishes main characters from recurring and guest voices, and provides verifiable details about actors, roles, and notable appearances. It uses an answer-first structure to quickly clarify who appears as whom, supported by concise tables and clear subsections. The framing is evergreen, focusing on stable cast information rather than short-lived news. Topics include the protagonist ensemble, recurring classmates, authority figures, guest stars, and credits context.
Main Protagonist Ensemble
The central ensemble voices the middle-school protagonists as they navigate puberty, hormones, and surreal internal voices. These characters appear across multiple seasons and represent the core Big Mouth cast in most episode credits.
- Nick Birch — voice by Nick Kroll, the anxious, kind-hearted anchor of the group.
- Andrew Glouberman — voice by John Mulaney, the neurotic, sensitive best friend.
- Jessi Glaser — voice by Jessi Klein, the confident, boundary-conscious girl navigating early adolescence.
- Maurice Becker — voice by Jason Mantzoukas, the chaotic schemer with surreal impulses.
- Levinia Pastuzaldi — voice by Gina Rodriguez (seasons 1–3), a bold, rule-pushing classmate.
Key Facts About the Main Protagonists
| Character | Voice Actor | Verified Detail | Source Type |
|---|---|---|---|
| Nick Birch | Nick Kroll | Series co-creator and protagonist | Show credits / interviews |
| Andrew Glouberman | John Mulaney | Writers’ room inspiration; prominent from season 1 | Show credits / interviews |
| Jessi Glaser | Jessi Klein | Voice work from seasons 1 onward | Show credits |
| Maurice Becker | Jason Mantzoukas | Chaotic schemer archetype across seasons | Show credits |
| Levinia Pastuzaldi | Gina Rodriguez | Main cast in seasons 1–3 | Show credits / casting announcements |
Recurring Classmates and Peer Ensemble
Beyond the protagonists, Big Mouth features a rotating peer group that shapes the social ecosystem of the show. These recurring classmates add texture to school life, group dynamics, and evolving jokes about adolescence.
- Missy Foreman-Greenwald — voice by Ayo Edebiri, a quietly insightful foil to Jessi.
- Jay Bilzerian — voice by Zachary Ruane (seasons 1–4), the unapologetic class clown and provocateur.
- Andrew’s brother Devin — voice by Brett Gelman, an eccentric adult presence with bizarre ambitions.
- Cindy — voice by Emily Heller, a pragmatic, no-nonsense girl in Jessi’s orbit.
- Nick’s older brother Duke — voice by John Gemberling, a lazy, horny teen stereotype.
Recurring Peer Roles at a Glance
| Character | Voice Actor | Role Context | Primary Seasons |
|---|---|---|---|
| Missy Foreman-Greenwald | Ayo Edebiri | Insightful peer, later a main voice in other projects | Seasons 1–5 |
| Jay Bilzerian | Zachary Ruane | Provocateur and class clown | Seasons 1–4 |
| Devin Glouberman | Brett Gelman | Andrew’s eccentric older brother | Seasons 1–4, guest later |
| Cindy | Emily Heller | No-nonsense peer in Jessi’s circle | Seasons 1–3 |
| Duke Birch | John Gemberling | Nick’s idle older brother | Seasons 1–3 |
Authority Figures and Adults
Adult characters in Big Mouth often embody exaggerated, hyperbolic takes on parenting, teaching, and professional life. These roles provide contrast to the teenagers and underscore the show’s absurdist tone while occasionally offering moments of sincerity.
- Leonard Oglam — voice by Tim Robinson, the perpetually anxious and compromised principal.
- Coach Steve — voice by Steve Zissis, the earnest, easily flustered gym instructor.
- Lydia Birch — voice by Megan Mullally, Nick’s blunt, emotionally direct mother.
- Stan and Crystal Glouberman — voices by Nick Kroll and Jenny Slate, Andrew’s exasperated parents.
- Dr. Squishface — voice by John Melfi, the surreal therapist populating many internal monologues.
Authority and Adult Cast Reference
| Character | Voice Actor | Function in Story | Notable Traits |
|---|---|---|---|
| Principal Oglam | Tim Robinson | School authority, often overwhelmed | Anxious, ethically flexible |
| Coach Steve | Steve Zissis | Gym teacher, earnest | Innocent pervert archetype |
| Lydia Birch | Megan Mullally | Nick’s mother | Direct, emotionally honest |
| Stan Glouberman | Nick Kroll | Andrew’s dad | Easibly exasperated, well-meaning |
| Crystal Glouberman | Jenny Slate | Andrew’s mom | Pragmatic, sometimes harsh |
Guest Stars, Mythic Figures, and Special Episodes
Big Mouth frequently features high-profile guest voices and surreal mythic characters that break from the regular school setting. These appearances tend to be event-driven, tied to episodes exploring fantasies, family dynamics, or exaggerated internal conflicts.
- Princess Carolyn — recurring guest via voice association with complex relationship storylines.
- Rita — recurring guest voice tied to Andrew’s family tensions and emotional beats.
- The Hormone Monsters — internal manifestations voiced by various cast members, representing impulses and emotions.
Notable Guest and Mythic Appearances
Guest/Mythic Figure Context of Appearance Episode/Season Relevance Princess Carolyn Links to broader narrative arcs; not a school character Special episodes and fantasy sequences Rita Family-related emotional episodes Season 2–3 key moments Hormone Monsters Internal allegory for puberty drives Core metaphor across all seasons How to Interpret Cast Lists and Credits
Because Big Mouth blends main characters, recurring classmates, authority figures, and surreal internal entities, cast lists can appear fragmented. Understanding how credits, voice actor roles, and character groupings work helps you quickly identify who belongs to the core ensemble and who appears situationally. This distinction reduces confusion when looking up specific episodes or guest appearances.
- Main cast typically includes Nick, Andrew, Jessi, Maurice, and prior-season regulars.
- Recurring classmates and peer figures shift more often but are still considered series regulars in broader credits.
- Authority figures and guest voices vary widely and are not usually listed as main cast.
Quick Comparison: Main Cast vs Recurring vs Guest
Type Typical Inclusion Example Voices Main Cast Central teen protagonists and consistent adults Nick Kroll, John Mulaney, Jessi Klein, Jason Mantzoukas Recurring Peers and adults appearing across multiple seasons Ayo Edebiri, Zachary Ruane, Brett Gelman Guest/Mythic Situational or fantasy figures, high-profile cameos Princess Carolyn, Rita, Hormone Monsters Frequently Asked Questions
- Who voices the main protagonist Nick Birch? — Nick Kroll, who is also a co-creator of the series.
- Is Gina Rodriguez still part of the main cast? — She voiced Levinia through season 3; her role is not active in later seasons.
- Do the Hormone Monsters have voice actors? — Yes, they are voiced by members of the regular cast depending on the episode and internal conflict being portrayed.
- Are guest stars credited as main cast? — Generally no; guest and mythic figures appear situationally and are not part of the core cast designation.
Conclusion and Practical Takeaways
The Big Mouth cast can seem sprawling because it blends core teenage protagonists, recurring classmates, exaggerated adults, and surreal internal entities. By separating main characters from recurring and guest roles, you can quickly find who you are looking for and understand how each performer contributes to the show’s distinctive tone. Use this guide as an evergreen reference when looking up cast details, episode credits, or when comparing voice work across seasons.