The BIG MOUTH Final Farewell: Every Main And Guest Star Confirmed For Season 8

The highly-anticipated final season of Netflix's Emmy-winning adult animated comedy, *Big Mouth*, is officially set to premiere on May 23, 2025, marking the end of a very gross, yet profoundly relatable, era of pubescent misadventures. This concluding chapter promises to deliver the same blend of hilarious, cringe-worthy, and surprisingly heartfelt storytelling that fans have come to love, bringing the journey of Nick, Andrew, Jessi, and the Hormone Monsters to its ultimate, awkward conclusion. With a confirmed release date and a stellar lineup of returning and brand-new voice talent, the eighth season is gearing up to be the biggest and most emotional farewell the series has ever produced. The show, co-created by Nick Kroll, Andrew Goldberg, Mark Levin, and Jennifer Flackett, has always relied on its incredible ensemble cast to bring its deeply personal and often surreal take on adolescence to life. As the kids face their final pubescent hurdles, including a notable growth spurt for one main character, the core cast is back, joined by an exciting roster of A-list guest stars ready to introduce new, bizarre, and essential entities to the *Big Mouth* universe.

The Core Voice Cast and Their Iconic Characters

The backbone of *Big Mouth* has always been its main ensemble, the performers who embody the perpetually confused middle-schoolers and the fantastical creatures guiding (or misguiding) them through puberty. For the final season, the central cast is confirmed to return, ensuring the beloved voices of the main protagonists and their inner demons remain consistent right up to the very last episode.

• Nick Kroll: As co-creator and star, Kroll voices a multitude of characters, most notably the show's main protagonist, Nick Birch, and the ever-present, anxiety-inducing Maury the Hormone Monster. Kroll is also the voice behind Coach Steve, Lola Skumpy, and various other entities.
• John Mulaney: Mulaney returns as Andrew Glouberman, Nick's on-again-off-again best friend, whose struggles with masturbation and anxiety have been a long-standing pillar of the series.
• Jessi Klein: Klein is back as Jessi Glaser, a character whose journey through her parents' divorce and her own sexual identity has provided some of the show's most poignant moments.
• Ayo Edebiri: Edebiri continues her role as Missy Foreman-Greenwald, the intelligent and often awkward friend navigating her own late-blooming puberty and evolving identity.
• Jason Mantzoukas: The energetic Mantzoukas returns as the hyperactive, often inappropriate Jay Bilzerian, whose chaotic family life and pansexuality are central to his arc.
• Maya Rudolph: Rudolph, a multiple Emmy winner for the show, is the voice of Connie the Hormone Monstress, along with Nick's mother, Diane Birch, and the Shame Wizard's sidekick, Mona.
• Fred Armisen: Armisen is confirmed to return, voicing Nick's father, Elliot Birch, and the eccentric, elderly student, Cyrus.
• Andrew Rannells: Rannells reprises his role as Matthew MacDell, the flamboyantly gay student with a love for drama and a sharp wit, who has become a fan-favorite.
• Paula Pell: Pell returns as Barbara Glouberman, Andrew's mother, adding to the ensemble of parents trying to navigate their own adult issues alongside their children's puberty.

New Emotional Entities and Star-Studded Guest Voices

One of *Big Mouth's* greatest strengths is its ability to personify the abstract feelings of adolescence as hilarious and often terrifying creatures. The final season introduces a fresh batch of these emotional entities, voiced by an impressive list of high-profile guest stars, adding new layers of topical authority to the show's exploration of mental health and complex feelings. The confirmed list of new and returning guest stars for Season 8 includes:

• Rosie Perez as Petra the Ambition Gremlin: A new entity that will undoubtedly push the kids toward their future, perhaps with a characteristic *Big Mouth* twist of over-zealousness.
• Holly Hunter as Compassion: An entity that suggests the final season will focus on the characters learning empathy and kindness as they grow up.
• Steve Buscemi as Mr. Pink: The role of this character is currently under wraps, but Buscemi's distinct voice promises a memorable new addition to the student body or a new adult figure.
• Cynthia Erivo as Gynecologist: Erivo, known for her powerful roles in *Harriet* and *Wicked*, will voice a gynecologist, indicating a significant and mature storyline for one of the female characters.
• Billy Porter: Confirmed as a guest star, Porter's role is highly anticipated, likely bringing his signature flair to a new emotional entity or adult figure.
• Kristen Wiig: A returning favorite, Wiig often voices various characters and entities, and her presence ensures more comedic brilliance.
• Ali Wong: Another returning voice, Wong’s contributions have always been a hilarious highlight, and fans can expect her to voice a new or familiar character.
• Chloe Fineman: The *Saturday Night Live* star joins the ranks of guest voices, adding her comedic talents to the final season.
• Richard Kind: A recurring voice in the *Big Mouth* universe, Kind's return is expected to add more familiar chaos.
• Maria Bamford: Her unique voice acting style is a perfect fit for the show's surreal entities.
• Zack Galifianakis: Another past guest star whose return suggests a continuation of a previous storyline or a brand-new entity.

The inclusion of entities like "Petra the Ambition Gremlin" and "Compassion" highlights the show's commitment to exploring the complex psychological landscape of adolescence, not just the physical changes. These new characters will serve as crucial guides—or hindrances—as the main kids transition out of middle school.

The End of a Gross Era: What to Expect in the Final Season

The announcement that *Big Mouth* is concluding with Season 8, premiering in May 2025, has generated significant curiosity among fans eager to see how the show wraps up its core themes. The creators have stated this is "the end of a very gross era," promising a definitive, yet still laugh-out-loud funny, conclusion to the series. The final 10 half-hour episodes will likely see the characters move closer to—or perhaps finally enter—high school, a major thematic shift that signals the end of their most intense puberty years. A key visual change confirmed for the season is Nick getting taller, a symbolic growth spurt that mirrors his character's maturation throughout the series. This physical change is a marked departure for the show and suggests a significant shift in his perspective and storyline as he enters "The Great Unknown" of young adulthood. The final season is expected to tie up loose ends for all the main characters: Nick's relationship with Andrew, Jessi's journey of self-discovery, and Jay's chaotic but loving path. By introducing new emotional entities like Compassion, the show is signaling a focus on the characters developing a deeper understanding of themselves and others, moving beyond the purely self-centered anxieties of early puberty. The stellar cast, both core and guest, is perfectly positioned to deliver a finale that is both hysterically funny and surprisingly moving, giving a proper send-off to one of the most honest and influential animated comedies of the last decade. Don't miss the final pubescent misadventures starting May 23, 2025.

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