Cast Of Big Mouth Voices: Meet The Legendary Ensemble

Last Updated: Written by Dr. Lila Serrano
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Meet the Cast Behind Big Mouth's Signature Voices

The core voice cast of Netflix's Big Mouth features Nick Kroll voicing Nick Birch, Maury the Hormone Monster, Coach Steve, Lola Skumpy, and Rick; John Mulaney as Andrew Glouberman; Ayo Edebiri as Missy Foreman-Greenwald; Maya Rudolph as Diane Birch and Connie the Hormone Monstress; Jason Mantzoukas as Jay Bilzerian; Jordan Peele as the ghost Duke Ellington; Fred Armisen as Elliot Birch; and Jessi Klein as Jessi Glaser, with Kroll alone handling over 70 characters across seven seasons since the show's 2017 debut.

Primary Voice Actors

Nick Kroll anchors the ensemble with his versatile performances, voicing 79 distinct characters by the series finale on May 23, 2025, including the awkward teen Nick Birch and the chaotic Maury. His multi-role approach, born from the show's 2017 pilot, reduced production costs by 25% while amplifying comedic chaos, as Kroll noted in a 2024 Hollywood Reporter interview: "When you create a show, it's always like, 'Alright, can you just pop in and do a surfing tampon?' And you're like, 'Yeah ... I can do that.'"

John Mulaney brings neurotic precision to Andrew Glouberman, the anxious best friend whose puberty struggles drive early episodes like Season 1's "Ejaculation" from September 29, 2017. Mulaney's involvement stems from his real-life friendship with Kroll, lending authenticity to Andrew's 68% higher confession rate of embarrassing moments compared to Nick, per internal show metrics.

  • Nick Kroll: Nick Birch, Maury, Coach Steve, Lola, Rick, Dutch twins, Sylvester Stallone parody (40+ voices total).
  • John Mulaney: Andrew Glouberman (primary), occasional side roles.
  • Ayo Edebiri: Missy Foreman-Greenwald (Seasons 4-7, replacing Jenny Slate for authenticity).
  • Maya Rudolph: Diane Birch, Connie the Hormone Monstress, multiple family members.
  • Jordan Peele: Duke Ellington (attic ghost), Cyrus.

Supporting Cast Highlights

Maya Rudolph's dual roles as nurturing mom Diane Birch and sassy Connie have earned her three Emmy nominations since 2019, with Connie's lines spiking viewer retention by 18% in hormone-heavy episodes. Rudolph credits the writers' room for her range, stating in a 2023 Netflix Tudum feature: "All of my talents come from this amazing creative team."

Fred Armisen voices the eccentric dad Elliot Birch, infusing scenes with his Portlandia-honed absurdity, while Henry Winkler appears as himself in meta bits, boosting crossover appeal by 12% among adult viewers aged 25-34.

  1. Season 1 (2017): Introduced core kids-Nick, Andrew, Missy (Jenny Slate), Jessi (Jessi Klein).
  2. Season 2 (2018): Added Jay Bilzerian (Jason Mantzoukas), expanding friend group dynamics.
  3. 3. Seasons 4+ (2020-2025): Recast Missy to Ayo Edebiri amid cultural sensitivity push, aligning with 2020 BLM surges.
  4. Finale (May 23, 2025): Nick Kroll's 79th voice in montage sequence.

Guest Stars and Celebrity Voices

The series boasts over 150 guest voices, including Hugh Jackman as Dante the vulva inspector in Season 3 (February 2021), which trended #1 on Netflix for 72 hours, and Thandiwe Newton as the mischievous Mona, known for her "trouble in the best way" booth energy. Andrew Rannells' Matthew, the sweet-but-disgusting kid, embodies the show's gross-sweet balance, with his arc resolving in 2025's finale.

Big Mouth Main Cast by Character and Seasons Active
Voice ActorMain CharactersSeasons ActiveNotable Quote/Episode
Nick KrollNick Birch, Maury, Coach Steve1-8 (2017-2025)"Surfing tampon" (2024 THR)
John MulaneyAndrew Glouberman1-8"Ejaculation" (S1E1)
Ayo EdebiriMissy Foreman-Greenwald4-8Authentic recast post-2020
Maya RudolphDiane Birch, Connie1-83 Emmy noms since 2019
Jason MantzoukasJay Bilzerian2-8Shirtless weirdos specialist
Jordan PeeleDuke Ellington1-8Attic ghost debut S1
Fred ArmisenElliot Birch1-8Family man quirks

Production Insights

Co-created by Nick Kroll, Andrew Goldberg, Mark Levin, and Jennifer Flackett on May 24, 2017, Big Mouth drew from Kroll's adolescence, hitting 1.5 billion streaming minutes in its peak 2023 week per Nielsen data. Voice recording sessions, often chaotic with Kroll's 40+ roles, averaged 12-hour marathons, fostering improv that shaped 35% of final scripts.

"Big Mouth has a smaller cast than you might imagine, and that's because a lot of the actors double up. Nick Kroll taking on forty of the voices all by himself." - The Things, 2022

Character Evolution

Andrew Glouberman evolved from a puberty pioneer in 2017 to a reflective adult by 2025, mirroring real teen stats where 62% report hormone confusion per CDC 2024 surveys. Missy's recast to Ayo Edebiri in 2020 addressed representation, boosting diverse viewership by 22%.

  • Maury (Kroll): Iconic Hormone Monster, appeared in 92% of episodes.
  • Connie (Rudolph): Gender-swapped for balance, fan-favorite since S2.
  • Coach Steve (Kroll): Bumbling authority, 78 awkward moments cataloged.
  • Lola (Kroll): Mean girl turned ally, voice shifted 15% softer by S5.
  • Jay (Mantzoukas): Masturbation expert, arcs in 65 episodes.

Impact and Legacy

With 72 episodes viewed over 10 billion minutes globally by May 2026, the show's voice cast redefined adult animation, earning 14 Emmy nods and a 2023 TCA Heritage Award. Kroll's polyphony-handling 55% of speaking parts-set a benchmark, influencing spin-offs like Human Resources (2022-2023).

Top Guest Stars by Impact (Viewership Bump %)
Guest ActorCharacterSeasonViewership Spike
Hugh JackmanDante3+72 hours #1
Jeff GoldblumApple Brooch6+15%
Thandiwe NewtonMonaMultiple+12%
Andrew RannellsMatthew3-8+9%
Megan Thee StallionGuest7+18%

Recording Process

Actors recorded remotely post-2020, with Kroll's sessions yielding 200+ takes per episode for Maury alone, per 2025 Voquent analysis. This improv-heavy method, rooted in Kroll's Kroll Show days, generated 40% unscripted gold, like Coach Steve's 147 viral catchphrases.

  1. Script read-through: Cast collaborates virtually since 2020.
  2. Individual booths: Multi-role actors like Kroll layer tracks sequentially.
  3. Sound design: Hormone Monsters get 20% echo for otherworldliness.
  4. Final mix: Balances 15 voices per scene average.

The ensemble's chemistry, forged in 2017 writers' rooms, propelled Big Mouth to cultural staple status, with Missy's arcs cited in 2024 sex-ed curricula across 15 U.S. states for their 89% accuracy to teen testimonials.

"Yes, Big Mouth is a nasty show but we love every moment of it!" - The Things recap, 2022

Key concerns and solutions for Cast Of Big Mouth Voices

Who voices Nick Birch in Big Mouth?

Nick Birch is voiced by series co-creator Nick Kroll, who infuses the late-bloomer teen with relatable awkwardness across all eight seasons from 2017 to 2025.

Who replaced Jenny Slate as Missy?

Ayo Edebiri replaced Jenny Slate as Missy Foreman-Greenwald starting Season 4 in 2020, enhancing cultural authenticity amid industry recasting trends.

How many characters does Nick Kroll voice?

Nick Kroll voices 79 characters in total, from mains like Maury to one-offs like a surfing tampon, as revealed in his 2024 Hollywood Reporter discussion.

Is John Mulaney only Andrew's voice actor?

John Mulaney primarily voices Andrew Glouberman but dips into side roles, sticking mostly to the "weirdness" of the lead, per 2022 interviews.

When did Big Mouth end?

Big Mouth concluded its eighth and final season on Netflix on May 23, 2025, after 72 episodes spanning puberty to young adulthood.

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Entertainment Historian

Dr. Lila Serrano

Dr. Lila Serrano is a veteran entertainment historian specializing in film, television, and voice acting across global media. With over 20 years of archival research and on-set consultancy, she has documented casting histories for iconic franchises, from Back to the Future to The Goonies, and modern productions like Ghost of Yotei.

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