Big Mouth season 8 cast: Full list of actors and guest stars

The outrageous reputation of the show has attracted an enviable list of major guest stars, which is only getting longer in season 8 as Holly Hunter (The Incredibles) and Steve Buscemi (Monsters Inc.) join the party.

If you're excited to see how the series comes to an end, read on for more about the Big Mouth season 8 cast – and you can also find out, in Kroll's own words, why there won't be a season 9.

Read on for everything you need to know about the Big Mouth season 8 cast, including the star-studded list of guest performers.

Big Mouth season 8 cast: Who is returning?

Here's a round-up of the Big Mouth season 8 cast – scroll on for more about their characters and where you might have seen their voice actors before.

• Nick Kroll as Nick Birch, Maury the Hormone Monster, Coach Steve, Rick the Hormone Monster, Lola Skumpy
• John Mulaney as Andrew Glouberman and others
• Jessi Klein as Jessi Glaser
• Jason Mantzoukas as Jay Bilzerian
• Ayo Edebiri as Missy Foreman-Greenwald
• Maya Rudolph as Connie the Hormone Monstress, Diane Birch, Bonnie the Hormone Monstress
• Andrew Rannells as Matthew MacDell
• Fred Armisen as Elliot Birch
• Jordan Peele as Ghost of Duke Ellington
• Richard Kind as Marty Glouberman
• Paula Pell as Barbara Glouberman
• Seth Morris as Greg Glaser

Nick Kroll plays Nick Birch, Maury the Hormone Monster, Coach Steve, Rick the Hormone Monster, Lola Skumpy

Who is Nick Birch, Maury the Hormone Monster and others? Nick is a late bloomer adjusting to adolescence, Maury is the personification of Nick’s sexual desires who makes a habit of popping up at the most awkward of times. Kroll also voices the incompetent Coach Steve, the ancient hormone monster Rick and popular girl Lola.

Where have I seen Nick Kroll before? Aside from being one of Big Mouth's series creators, Kroll is also known for Kroll Show, The Oh, Hello Show, FX's The League. He has more recently starred in Don't Worry Darling, Roar and The Bob's Burgers Movie.

John Mulaney plays Andrew Glouberman and others

Who is Andrew Glouberman? Andrew is Nick's best friend and is a little further along in his puberty journey than his friend.

Where have I seen John Mulaney before? The comedian and actor rose to prominence as a writer on Saturday Night Live and has various stand-up specials of his own. He has also lent his voice to roles in Spider-Man: Into The Spider Verse, Puss in Boots: The Last Wish and more recently featured in The Bear.

Jessi Klein plays Jessi Glaser

Who is Jessi Glaser? Jessi is a seventh grader like Andrew and Nick and is going through a tough time with puberty. She's exploring her sexuality with her classmates and her own hormone monstress, Connie.

Where have I seen Jessi Klein before? Klein is one of the consulting producers on Big Mouth as well as the voice of one of the series' main characters. She is a writer and stand-up comedian having appeared on shows such as Best Week Ever, as well as serving as head writer and executive producer on Inside Amy Schumer.

Jason Mantzoukas plays Jay Bilzerian

Who is Jay Bilzerian? Jay is one of the more sex-obsessed characters in Big Mouth, having plenty a hilarious scene throughout the series. Throughout the first few seasons of the series, he realises he's bisexual.

Where have I seen Jason Mantzoukas before? Mantzoukas has had numerous roles in TV and film, having had recurring roles on Parks and Recreation, The Good Place and Brooklyn Nine-Nine. He has also appeared in films such as The Dictator and John Wick: Chapter 3 – Parabellum.

Ayo Edebiri plays Missy Foreman-Greenwald

Who is Missy Foreman-Greenwald? Missy is another member of the main friend group and is the more emotional and geeky of them all. She's got a big heart and more recently, has been going through some racial identity struggles. The character was previously voiced by Jenny Slate who exited the show in 2020, saying: “Missy is also Black, and Black characters on an animated show should be played by Black people.”

Where have I seen Ayo Edebiri before? The comedian, voice actress and writer has voiced Missy since 2020 but is perhaps also best known for her recurring role in The Bear as Sydney and in Abbott Elementary as Ayesha. She has also recently starred in Black Mirror season 6, Theatre Camp and Bottoms.

Maya Rudolph plays Connie the Hormone Monstress, Diane Birch, Bonnie the Hormone Monstress

Who is Connie the Hormone Monstress and others? As the Hormone Monstress, Connie helps many of the girls in the series through puberty. She's also Nick's mother and twin sister of Bonnie.

Where have I seen Maya Rudolph before? Rudolph is an actress and comedian who has appeared in several films including Bridesmaids, Grown Ups and Disenchanted. She has also voiced characters in Shrek the Third, Teenage Mutant Ninja Turtles: Mutant Mayhem and has more recently starred and executive produced Apple TV+'s Loot.

Andrew Rannells plays Matthew MacDell

Who is Matthew MacDell? If you're looking to get the latest scoop on the school gossip then Matthew is your guy. He is also the ex-boyfriend of Aiden and Jay.

Where have I seen Andrew Rannells before? Best known for originating the role of Elder Kevin Price in the 2011 Broadway musical The Book of Mormon, Rannells has a long history on Broadway. On screen, he is best known for Girls, Black Monday and Invincible.

Big Mouth season 8: Who are the new guest stars?

As fans have become accustomed to, Big Mouth season 8 will feature a cavalcade of big-name guest stars, including some returning voices such as Rosie Perez and Billy Porter.

Among the new additions are Holly Hunter (The Incredibles) as a never-before-seen creature simply named Compassion, who will reportedly encounter the Bridgeton teens towards the end of their story.

Steve Buscemi has been added as a character named Mr Pink, referencing his early Reservoir Dogs role that still ranks among his most celebrated, while Nathan Fillion will also be getting involved in some self-parody as a heightened version of himself.

The full list of confirmed Big Mouth season 8 guest stars is as follows:

• Rosie Perez as Petra the Ambition Gremlin
• Holly Hunter as Compassion
• Steve Buscemi as Mr Pink
• Billy Porter as Ocean
• Nathan Fillion as Himself
• Cynthia Erivo
• Kristen Wiig
• Quinta Brunson as Quinta
• Ali Wong as Ali
• Richard Kind
• Maria Bamford
• Keke Palmer
• David Thewlis
• Thandiwe Newton
• Natasha Lyonne
• Aidy Bryant
• Lena Waithe as Lena
• Stephanie Beatriz as Lulu
• Whitmer Thomas
• Chelsea Peretti
• Chloe Fineman
• June Diane Raphael
• Zach Woods
• Craig Robinson
• Jack McBrayer

Big Mouth seasons 1-8 are available to stream on Netflix. Sign up for Netflix from £5.99 a month. Netflix is also available on Sky Glass and Virgin Media Stream.

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