Big Mouth centers on the awkward, hormone-driven middle-school years of Nick Birch and his friends, voiced by an ensemble cast that blends original main cast members with recurring and guest performers. This guide profiles the principal cast, their on-screen roles, and the voice actors behind them, clarifying who plays which character across the series while outlining how the show depicts puberty, friendship, and growing up. Below you will find verified details on the core cast, character mappings, and supporting cast roles that define the show’s long-running comedic voice.
Main Cast and Characters Overview
The main ensemble brings the series’ frank humor and emotional beats to life through voice work matched to each character’s personality and narrative function. Core characters embody distinct archetypes within the friend group, while guest stars and recurring figures expand the world of middle-school awkwardness.
Principal Characters and Voice Actors
| Character | Voice Actor | Role Type | First Season |
|---|---|---|---|
| Nick Birch | Nick Kroll | Lead protagonist | Season 1 |
| Andrew Glouberman | John Mulaney | Best friend, anxious neurotype | Season 1 |
| Jessi Glaser | Jessica DiCicco | Sharp-tongued friend | Season 1 |
| Maury Beverly | Jordan Peele | Teacher with boundary issues | Season 1 |
| Missy Foreman-Greenwald | Patti Harrison | Spacy, creative friend | Season 2 |
| Levinia Pastel | Tim Robinson | Teacher and later principal | Season 5 |
Voice Cast in Detail
The vocal performances anchor the show’s balance of outrageous scenarios and sincere reflections on adolescence. Several actors perform both as themselves in celebrity bits and as scripted characters, adding a meta layer to the show’s comedy.
Nick Kroll as Nick Birch
Co-creator Nick Kroll voices the earnest, sometimes insecure protagonist whose growth across seasons frames the narrative. His performance captures the vulnerability and impulsivity of early teenage years, making Nick both relatable and frequently flawed.
John Mulaney as Andrew Glouberman
John Mulaney’s Andrew is defined by intense anxiety, elaborate fantasies, and a yearning for acceptance. Mulaney’s timing and tonal shifts enhance the character’s journey from extreme neurosis toward more confident self-acceptance over the series.
Jessica DiCicco as Jessi Glaser
DiCicco’s Jessi combines sarcasm with bursts of empathy, serving as the group’s candid truth-teller. Her vocal delivery emphasizes rapid shifts between harsh honesty and moments of surprising sensitivity.
Jordan Peele as Maury Beverly
Jordan Peele’s iteration of Maury blends inappropriate enthusiasm with childlike impulsivity. The performance leans into absurd authority parodies, illustrating how unchecked entitlement can manifest in adult-adolescent dynamics.
Patti Harrison as Missy Foreman-Greenwald
Harrison’s Missy embodies spacey creativity and nonconformity, offering a counterpoint to more rule-conscious characters. Their performance introduces nuanced representation and laid-back confidence within the friend group.
Tim Robinson as Levinia Pastel
Robinson’s Levinia evolves from an unorthodox teacher into a central authority figure as principal, channeling deadpan delivery into increasingly bewildered stewardship of the school’s escalating chaos.
Supporting Cast and Recurring Voices
A rotating roster of comedians, writers, and guest performers populate the hallways and fantasies that surround the core friend group. These voices deepen world-building and allow the show to skewer multiple targets across generational and cultural contexts.
Notable Recurring Guest Voices
- Heidi Gardner as various hormonal monsters and metaphorical impulses
- Timothy Simons as multiple authority figures and nervous adults
- June Diane Raphael in emotionally intelligent guest arcs
- Fred Armisen in genre-parodying fantasy sequences
- Paul Scheer and Jason Mantzoukas as situational archetypes
Distinguishing Main Cast from Guest Appearances
While the show thrives on celebrity cameos and absurdist fantasy sequences, the core ensemble maintains continuity across seasons. Understanding who belongs to the main cast helps viewers track evolving character arcs and differentiate sustained relationships from one-off gags.
Character Evolution Across Seasons
The series uses its rotating vocal lineup to explore shifting power dynamics within the friend group. Characters introduced in later seasons expand the social ecosystem, while early protagonists continue to navigate the same insecurities with increased self-awareness.
How to Identify Voice Roles
Credits list principal cast members first, with recurring voices noted beneath. Official showrunners and cast interviews often clarify vocal contributions, especially for characters voiced by non-celebrity actors or those performing dual roles.
Clearing Up Common Misconceptions
- The on-screen middle school kids are portrayed by adults, consistent with the show’s animated, metaphorical style.
- Celebrity appearances are usually guest voiced and do not alter the core ensemble lineup.
- Teacher characters like Maury and Levinia serve specific satirical functions within the school hierarchy.
Frequently Asked Questions
- Who voices Nick Birch? Nick Kroll voices the titular protagonist, Nick Birch.
- Is Andrew Glouberman voiced by John Mulaney? Yes, John Mulaney provides the voice for Andrew Glouberman.
- Which actor plays Jessi Glaser? Jessica DiCicco voices Jessi Glaser.
- Who is the voice of Maury Beverly? Maury Beverly is voiced by Jordan Peele.
- Which new cast members appear in later seasons? Missy Foreman-Greenwald (Patti Harrison) and Levinia Pastel (Tim Robinson) join the core ensemble in later seasons.
Wrapping Up the Cast Map
Big Mouth sustains its comedic edge through a tightly defined main cast and a flexible roster of guest voices. Recognizing who performs each character clarifies emotional throughlines and highlights the show’s mix of cringe, heart, and satire. Use this breakdown to navigate the series, track vocal roles across seasons, and better understand how each performer shapes the show’s distinctively awkward universe.
