If you’re a Bob’s Burgers fan, chances are you’ve caught yourself mid-episode thinking, “Wait… do I know that voice?” And the answer is almost always yes. This show doesn’t just serve up pun-laced burgers and chaos-loving kids—it’s also a low-key celebrity magnet. Over the years, everyone from Oscar winners to sketch comedy legends has snuck in for a cameo, often buried under layers of animated weirdness. Some show up once and vanish. Others voice half a dozen random characters without ever being front and center.
So, if you thought you knew every voice in the Belcherverse—think again. These are the weirdest guest stars you totally missed on Bob’s Burgers.
1. Keegan-Michael Key
Keegan-Michael Key might just hold the unofficial record for “most random characters voiced by a single person who isn’t in the main cast.” You probably recognize his voice from Key & Peele (“Ya done messed up A-A-ron!”) or Hotel Transylvania—but unless you’re actively watching the credits, you’d never know how often he’s popped up in Bob’s Burgers.
He’s played so many different characters, and none of them are regulars. We’re talking:
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Todd (debate coach) – “Gene It On,” “Ain’t Miss Debatin’”
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Beefer Sutherland – “Uncle Teddy”
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Darnell – “Friends with Burger-fits”
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The Ear Drum bartender – “Sacred Couch”
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Couch Burners bass player – “Sacred Couch”
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Cory Battles – “Glued, Where’s My Bob?”
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Dr. Juarez – “Zero LARP Thirty”
The best part? Every single one feels like a totally different person. Key doesn’t phone it in—he commits to the bit, even if he’s just yelling about couches or garlic burgers for 30 seconds.
Here’s a fun bit of trivia: Despite being attached at the hip professionally for years, he and Jordan Peele didn’t actually share an episode of Bob’s Burgers until Season 5’s “Sacred Couch.” If you’re a Key & Peele fan, it’s worth going back just to hear their voices bounce off each other again—this time as couch-themed musicians. (Yep, that’s a thing.)
2. Jordan Peele
Before he was scaring the life out of audiences with Get Out and Nope, Jordan Peele was quietly doing some fantastically weird voice work on Bobs Burgers. And unless you’ve got a pitch-perfect ear for comedy voices, you probably had no idea it was him. Peele didn’t just do a one-off role—he voiced an entire lineup of bizarre, unforgettable characters, each one more random than the last. Let’s break it down:
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Horace – “Presto Tina-o”
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Sandy Frye – “Easy Com-mercial, Easy Go-mercial”
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Max – “Father of the Bob”
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Hotel Security Guard – “Eat, Spray, Linda”
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Sofa Jester – “Sacred Couch”
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Couch Burners singer – “Sacred Couch”
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Fanny – Now this one’s a standout. Fanny is a loud, sassy criminal and former partner of the infamous Felix Fischoeder. She shows up as the main antagonist in the two-part season 4 finale and is voiced by Peele in full diva mode. It’s bold. It’s campy. It’s hilarious. And yes, she tries to kill someone. Casual.
What’s especially cool is that Peele didn’t even overlap with Keegan-Michael Key in any of these until “Sacred Couch”—their only shared episode, even though both had been voicing characters on the show for years.
And here’s the kicker: Peele officially retired from acting in 2018 to focus full-time on directing, so Bobs Burgers is one of the last places you’ll hear his voice in character. It’s low-key legendary. You’ve got a future Oscar-winning filmmaker playing a murderous fiance, a former NFL star, and a couch punk vocalist all in the same universe. If that’s not peak Bobs Burgers, I don’t know what is.
3. Billy Eichner
You ever watch an episode and think, “Wow, this librarian’s energy is a lot”? That’s probably because it’s Billy Eichner.
Eichner voices Mr. Ambrose, the school librarian who hates his job, doesn’t hide it, and frequently spirals into bizarre rants about the state of the world, the government, witchcraft, conspiracies, or whatever pop culture rabbit hole he’s stuck in that day. He’s appeared in several episodes since his debut in Season 4, and honestly, he’s a vibe.
If you know Eichner from Billy on the Street (“Lets go lesbians!!!”) or Parks and Rec, this character will feel genuine. The voice? The tone? The simmering chaos just beneath the surface? Still very, very Billy. Also, shoutout to the writers for letting Mr. Ambrose spiral into wild tangents that make zero sense but still feel deeply real. He’s not in every episode, but whenever he pops up, it’s a gem.
4. Ken Jeong
Of course Ken Jeong plays a weird dentist on Bob’s Burgers—how could he not?
You might remember Dr. Yap from Season 2’s episode named after him, where he gives Bob a questionable dental exam, gets way too cozy with Linda, and somehow ends up in a love triangle that involves zero dentistry and a lot of awkwardness. The best way to describe Dr. Yap? Imagine if Ken’s character from The Hangover somehow became your family dentist and refused to stop hitting on your mom.
Dr. Yap shows up again in later episodes, each time getting a little weirder and a little more unhinged. He’s basically Bob’s Burgers’ answer to Dr. Nick from The Simpsons—if Dr. Nick had a midlife crisis and a crush on Linda Belcher.
Also, in case you didn’t know: Ken Jeong is a licensed physician in real life. Like, legit med school and everything. So the fact that he plays such a chaotic disaster of a doctor makes his appearances on the show even better. It’s like watching your friend dress up for Halloween as “World’s Worst Dentist” and absolutely committing to the role.
5. John Oliver
Let’s be honest—John Oliver just sounds like a character from Bob’s Burgers. So when the Last Week Tonight host finally showed up in the episode “There’s No Business Like Mr. Business Business,” it felt like he had been part of the universe all along.
Oliver voices Ian Amberson, a high-society cat agent (yes, that’s a real job in this world) who tries to turn Gayle’s cat Mr. Business into the next big feline celebrity, before ultimately betraying them. It’s a ridiculous plotline, but honestly? His performance is kind of brilliant. He leans all the way in to the over-the-top drama, as if managing the career of a chunky housecat is more high-stakes than representing Taylor Swift.
It’s the kind of guest role that could’ve just been a one-off joke, but Oliver brings so much flair to it that you wish Ian Amberson had his own spin-off—something like Entourage, but for show cats. It’s one of those rare moments where a guest star matches the show’s tone perfectly while still being unmistakably themselves. You hear it, and you’re like, “Yep. That’s John Oliver. And of course he’s doing this.”
6. Max Greenfield
New Girl’s Max Greenfield has one of those voices that’s super recognizable if you’re a sitcom junkie—but on Bob’s Burgers, he kind of disappears into his role in the best way. He plays Boo Boo, the youngest and cutest member of Boyz 4 Now, the fictional boy band that Tina (and sometimes Louise) is totally obsessed with.
Boo Boo shows up in multiple episodes, and every time, he’s painted as the overly sweet, slightly clueless heartthrob who just exists to make teenage girls swoon. Greenfield’s voice work captures that exact teen-dream vibe: soft, charming, a little dumb, but in an endearing way. It’s a completely different energy than Schmidt from New Girl, which makes it that much funnier when you realize who’s behind it.
Also, “Bye Bye Boo Boo” is one of the best Bob’s Burgers episodes for Tina-lovers. Watching her meltdown over Boo Boo’s potential departure from the band is peak Belcher chaos, and Greenfield totally plays into the drama.
7. Paul Rudd
Okay, this one’s just… perfect.
Paul Rudd voices Jericho, Tina’s imaginary horse friend, in the episode “The Horse Rider-er.” And when I say “imaginary horse friend,” I don’t mean he’s just some cartoonish talking animal. I mean he is a full-on emotional support creature who gives Tina life advice in soft, whispered tones like some kind of zen cowboy guru.
It’s the most Paul Rudd role ever, and it works so well because he delivers every line like it’s the most important thing he’s ever said—even when it’s something like, “You don’t need to win to be a winner, Tina.” It’s simultaneously ridiculous and sweet, which is basically Rudd’s whole thing.
There’s also a fun little crossover moment: Tina names Paul Rudd as one of her ALS Ice Bucket Challenge nominees in a behind-the-scenes short that ties into this episode. So not only is he her imaginary horse, he’s also canonically part of her personal inspiration board. As he should be.
8. Jon Hamm
Of all the celebrities who’ve guest starred on Bob’s Burgers, Jon Hamm playing a talking toilet might be the weirdest casting—and somehow also the most emotionally moving.
In the episode “O.T.: The Outside Toilet,” Hamm voices a high-tech, abandoned toilet that Gene finds in the woods and immediately bonds with. What starts as a goofy concept turns into this surprisingly heartfelt story about loneliness, friendship, and yes, potty humor.
Hamm plays the toilet completely straight—no joke voice, no over-the-top comedy. Just… sincere, slightly robotic sadness. It’s like Her, if Her starred an intelligent bidet instead of Scarlett Johansson. And honestly? It hits you right in the feels.
It’s one of those roles where, if you didn’t know it was Hamm, you might never guess. But once you do know, it makes the whole episode feel like a beautifully weird fever dream you definitely want to revisit.
9. Bill Hader
If there’s a celebrity whose vibe fits Bob’s Burgers perfectly, it’s Bill Hader. And he’s not just a one-time guest star—he’s voiced multiple characters, including one that fans keep begging to see more of.
Most notably, Hader plays Mickey, the friendly neighborhood bank robber with a soft spot for kids, karaoke, and vaguely illegal activities. Mickey first appears in “Bob Day Afternoon” and has popped up in several episodes since. He’s basically a chaotic good version of a cartoon criminal—dangerous, but in a lovable way. Like, you wouldn’t trust him with your wallet, but you would invite him to karaoke night.
Hader also voiced Big Bob, aka Bob’s dad, in the Christmas episode “Father of the Bob.” And that was a big deal because Big Bob had previously been voiced by H. Jon Benjamin, the same actor who plays Bob. So Hader stepping in added this subtle emotional distance between father and son—kind of genius, actually.
Also, shoutout to Seth the Robot, another random Hader character who shows up in the same episode as Mickey. It’s a blink-and-you-miss-it performance, but it’s just one more weird little detail in his growing Bob’s Burgers resume.
10. Kumail Nanjiani
Kumail Nanjiani plays Skip Marooch, a celebrity chef who’s exactly the kind of charismatic foodie you’d expect to find judging a burger contest. He shows up in “Best Burger” (Season 5), where Bob ends up competing against both Skip and Jimmy Pesto in a high-stakes cook-off.
Skip’s burger is made with pomegranate and green chili chutney, which tells you pretty much everything you need to know about him. He’s the kind of guy who probably has a signature foam and thinks ketchup is for amateurs. Nanjiani plays Skip with the perfect mix of smug charm and backhanded compliments. He’s not mean, exactly—but he definitely thinks he’s better than you.
And here’s the cool part: Kumail is coming back. At San Diego Comic-Con 2024, it was announced that Skip Marooch will return in a future episode. So if you loved his burger snobbery the first time around, you’ll get another helping soon.
Also, he delivers one of the best lines in Bob’s Burgers history: “Yeah, I smelt it, and now I want you to dealt it. Into my mouth.”
Final Thoughts
Bob’s Burgers has always been a show that thrives in the weird little corners—awkward family dinners, strange neighborhood feuds, haunted toilets, you name it. So it makes total sense that it would cast guest stars that are not just big names… they’re weirdly perfect big names. From whispering horse mentors to cat talent agents and couch rock bands, these celebrity cameos aren’t just funny—they’re the kind of deep-cut gems that make rewatching the series even better.
So next time you’re binging episodes and a voice makes you go, “Wait, is that…?”—pause. It probably is.
