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Big Mouth Season 4 characters, review, release date, and more

Everything you need to know.

Big Mouth Season 4 is here. After a long break (and an unexpected Valentine's Day special), Netflix's raunchiest cartoon returned on December 4, reuniting us with our favorite animated tweens and their hilarious puberty monsters — along with some exciting new characters and a new voice actor for Missy.

Created by its star Nick Kroll and his childhood best bud Andrew Goldberg, Big Mouth's hilarious elevator pitch is taking uncomfortable ideas like hormones, anxiety, depression, and shame as monsters that only some characters can see. The show also boasts an all-star cast that features John Mulaney, Jordan Peele, Jason Mantzoukas, Maya Rudolph, Fred Armisen, Richard Kind, Thandie Newton, and (formerly) Jenny Slate — with even more in Season 4.

Now that Season 4 has arrived, we can still look forward to at least two more seasons of Big Mouth, a planned spin-off called Human Resources, and even more shows. But while we wait for all that, let's reflect on Big Mouth Season 4.

Welcome to Camp Mohegan Sun.Netflix

Where is Inverse's Big Mouth Season 4 review?

Here's our initial review of Big Mouth Season 4, which focuses on how the show has surpassed the series that arguably inspired it, South Park. We've also got this think piece about how Season 4 fixes the biggest problem with Season 3.

When was the Big Mouth Season 4 release date?

Big Mouth Season 4 premiered on Netflix on December 4, roughly two months after we originally expected it to due to pandemic-inflected delays.

What was the Big Mouth Season 4 release time?

Like every Netflix show, Big Mouth Season 4 was released at 3 a.m. Eastern, (aka, midnight Pacific time).

Is there a Big Mouth Season 4 trailer?

There sure is!

In the trailer, everyone is at summer camp, where all of the children have gathered after Season 3 ended at the conclusion of the school year. But somewhat quickly, we're back in school (the summer camp plot only lasts a few episodes at the start of Season 4).

Everything's a bit chaotic, but the most notable addition is a new kind of monster called Tito the Anxiety Mosquito (Maria Bamford). Previous seasons complemented the Hormone Monsters with the Shame Wizard, Depression Kitty, and the Menopause Banshee. Big Mouth Season 4 adds anxiety to the mix.

Who are the Big Mouth Season 4 guest star characters?

Netflix announced a list of guest stars with the release of the Season 4 trailer on November 13. In addition to Maria Bamford joining the show as Tito, there's also Zach Galifianakis' Gratitoad, "who is there to help our crew cope with their anxiety and not let it completely own them."

But the following guest stars have also been confirmed: Seth Rogen, Josie Totah, Lena Waithe, Quinta Brunson, John Oliver, Sterling K. Brown, Paul Giamatti, Maya Erskine, and Anna Konkle.

Seth Rogen voices a chubby child at camp named Seth Goldberg who seems a bit older than the core cast. John Oliver plays a camp counselor named Harry who wears socks with his sandals, which is already the most monstrous thing about Season 4. Sterling K. Brown is Jessi's new boyfriend Michael Angelo, Giamatti voices Andrew's poop, while Maya Erskine and Anna Konkle play the Cafeteria Girls in what feels like a Big Mouth-PEN15 crossover episode.

Are there any other Big Mouth Season 4 character changes?

Actress Jenny Slate left the show in July 2020, reasoning that "Black characters on an animated show should be played by Black people." Slate, who is Jewish and white, voiced Missy, a young girl who is half-Jewish, half-Black.

Her decision came roughly a month after the killing of George Floyd at a time when the entertainment industry began to reckon more directly with a lack of diversity in terms of representation across TV and film. A lengthy statement on Slate's Instagram account goes into further detail.

That same day, show co-creator Nick Kroll released a statement via Twitter on behalf of the other creators in support of Slate's decision.

"We sincerely apologize for and regret our initial decision to cast a white actor to voice a biracial character," it reads, conveying the intention to recast the character with a Black actor to better represent her identity.

Netflix then announced on August 28, 2020 that comedy writer and performer Ayo Edebiri would assume the role of Missy in the penultimate episode of Season 4.

“I was definitely a very uncomfortable child, so I think the show speaks to that and a lot of those feelings, which still resonate with me as an adult,” Edebiri told Variety. “I’m back home in my childhood bedroom right now and on my bookshelf in between ‘A Series of Unfortunate Events’ is Bill Clinton’s autobiography and Nelson Mandela’s autobiography and a translation of ‘The Iliad’ in Latin. I was a true dork. So I don’t think I have to go too far to connect with Missy.”

Edebiri actually joined the Big Mouth team as a writer on Season 5 before being tapped for this new role, and there's a "moment" in the second-to-last episode of Season 4 that felt like a natural fit for some transition to happen for Missy.

Season 4 will be a transformative one for Missy.Netflix

“It’s about Missy’s continued evolution as a person — that she has all of these different parts of who she is," Kroll toldVariety. "There’s the sidelines Missy and the more sexually adventurous Missy, mirror Missy, and then also this Missy that she’s been discovering [in Season 4] through hanging out with her cousins and really taking a look at her Black identity."

Big Mouth dives into meta-commentary with this character as Missy spends time with Black members of her family, and that causes an identity shift that manifests as the change in voice. It's a provocative approach to really say something about the phenomenon, and we'd expect nothing less from a show this smart.

How did the end of Big Mouth Season 3 set up Season 4?

Jessi is clearly living in New York City here.Netflix

The last few episodes of Season 3 shattered the core friend group of Big Mouth.

After Nick kissed Missy in a later episode and even went on a date with her, Andrew discovered and took the betrayal really hard. It drove a wedge so big between the former best friends that in the finale, Andrew essentially broke up with Nick and didn’t go to summer camp. But in the trailer, Andrew still shows up at summer camp anyway. The two seem to gain new best friends

Similarly, Missy finds herself ostracized by both boys when Nick realizes he doesn’t want to date her. Kissing Nick also triggered a breakup between her and Lars, so everyone winds up alone.

Another dramatic change for the series is that Jessi’s mother decided that they were moving to New York City, leaving Missy with one less female friend. Matthew also expresses disappointment at her leaving, but during the superhero episode, Jessi’s truth powers reveal that he isn’t all that worried because he has his new boyfriend Aidan. Jessi still shows up at summer camp, however, so for all the ways that the Season 3 finale shook up the status quo, it seems like it'll be restored in Season 4.

Will Big Mouth crossover with Human Resources?

During the New York Comic Con 2019 panel ahead of Big Mouth Season 3’s release, Nick Kroll teased that the show might return to the world of the hormone monsters in future seasons, and later on, he confirmed that a spinoff called Human Resources was in development.

“It’s about the monsters and the creatures who manage people,” Kroll said to the enthusiastic crowd at NYCC. “We’re excited to tell a lot of different stories, not just about puberty, but about all stages of life.”

He also confirmed that they’d start production on the new series only after finishing Big Mouth Season 5. Since Season 4 didn't see the characters return to the Hormone Monsters' homeworld, it's possible Season 5 will pick up that thread.

Big Mouth Season 4 will be released on Netflix in fall 2020.

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