A cartoon character can feel like an old friend, even when you have never seen the person doing the voice. Some of those voices belong to stars you may know from movies, television, or even a rock band.
Their performances help make animated characters funny, scary, or easy to love. See if you can hear these familiar stars the next time you watch.
1. Kelsey Grammer as Sideshow Bob
That deep, polished voice makes Sideshow Bob sound almost too fancy for his wild plans. Kelsey Grammer, best known for playing Frasier Crane, has voiced the Simpsons villain since 1990.
His calm delivery makes Bob even funnier when a scheme falls apart.
Listen for the gap between Bob’s grand words and his silly mistakes. It is a clever acting trick: a voice can tell you how a character sees himself, even when the story shows something else.
2. Patrick Warburton as Kronk
Kronk can cook a meal, talk to squirrels, and somehow still lose track of the villain’s plan. Patrick Warburton gave him that unmistakably low voice in The Emperor’s New Groove and returned for its television spin-off.
Warburton also appeared in live-action shows such as Seinfeld, but Kronk shows off a different skill. Notice how his serious tone makes even the goofiest line funnier.
Sometimes a joke lands because the actor refuses to sound like he is joking.
3. Tia Carrere as Nani Pelekai
Keeping a family together is hard work, and you can hear it in Nani’s voice. Tia Carrere, familiar to many viewers from Wayne’s World, voiced Lilo’s older sister in Lilo and Stitch.
Nani worries about bills and safety while trying to give Lilo room to be herself.
Pay attention to how Carrere sounds firm one moment and caring the next. That mix helps Nani feel like a real person, not just the grown-up who says no.
4. Will Friedle as Ron Stoppable
Ron Stoppable may panic around danger, but he never stops showing up for Kim. Will Friedle, once known as Eric Matthews on Boy Meets World, voiced Kim Possible’s loyal best friend.
His quick reactions give Ron’s jokes their bounce, while softer moments show why Kim trusts him.
Try listening when Ron is scared but stays to help anyway. Friedle makes those scenes both funny and brave.
It is a reminder that courage does not always sound confident.
5. Drew Barrymore as Jillian Russell
A familiar movie star turns up in Quahog if you listen closely. Drew Barrymore, who first won audiences over as a child in E.T. the Extra-Terrestrial, has voiced Jillian Russell on Family Guy.
Jillian’s cheerful way of speaking adds to the character’s comic appeal.
Voice roles can be easy to miss when a star does not look like the character. Next time Jillian appears, listen for Barrymore’s light, friendly delivery.
It helps explain why Jillian can make a short scene memorable.
6. Vin Diesel as the Iron Giant
A giant robot does not need long speeches to break your heart. Vin Diesel, famous for action movies, voiced the title character in The Iron Giant.
The robot speaks simply, so small changes in Diesel’s voice carry a lot of meaning.
Listen to how curious the Giant sounds while learning about people. His strength could make him frightening, but his voice helps you understand his kindness.
The performance shows that a few carefully spoken words can matter more than a loud speech.
7. James Avery as Shredder
Uncle Phil and the Turtles’ armored enemy sound worlds apart, yet James Avery played both. Before many fans knew him from The Fresh Prince of Bel-Air, Avery voiced Shredder in the 1987 Teenage Mutant Ninja Turtles cartoon.
His commanding tone made the villain seem dangerous, even when the show’s adventures got wonderfully strange. Compare Shredder’s sharp orders with Uncle Phil’s speeches and you may hear Avery’s gift for authority.
The same skill can serve a caring parent or a cartoon villain.
8. J.K. Simmons as the Yellow M&M and Mayor Lionheart
One actor can sound nervous in a candy commercial and powerful in a movie. J.K.
Simmons has voiced the Yellow M&M in ads and Mayor Lionheart in Zootopia. The two characters could hardly be more different, which makes the pairing fun to spot.
Yellow often sounds unsure, while Lionheart speaks with the confidence of a leader. Listen for how Simmons changes his pace and energy.
Those choices help an audience understand a character quickly, even before the character explains anything.
9. Tim Curry as Nigel Thornberry
Nigel Thornberry talks about wildlife as though every muddy trail leads to a grand discovery. Tim Curry voiced the explorer dad on The Wild Thornberrys, giving him a lively sound that stands out in every scene.
Curry’s performance helps sell Nigel’s excitement, even when the rest of his family sees trouble ahead. If you watch an episode, notice how much Nigel’s voice rises and falls.
That changing rhythm makes his enthusiasm feel almost bigger than the jungle around him.
10. Flea as Donnie Thornberry
Donnie Thornberry has plenty to say, even if his family cannot always understand it. Flea, the bassist for the Red Hot Chili Peppers, voiced the energetic boy on The Wild Thornberrys.
His performance is packed with sounds and sudden bursts of feeling rather than ordinary conversation.
Watch Donnie’s face while listening to Flea’s voice. Together, they make his mood easy to follow.
It is a fun example of how an animated performance can communicate without clear words.
11. Brittany Murphy as Luanne Platter
Luanne Platter brings bright hope to a world full of dry jokes. Brittany Murphy voiced her on King of the Hill, giving Luanne a sweet sound without hiding her struggles.
Murphy also appeared in movies, so her place in the Hill family’s world may surprise new viewers.
Listen when Luanne tries to stand up for herself. Her voice may sound uncertain at first, but you can hear her growing stronger.
That makes her victories feel earned and personal.
12. John Ritter as Clifford
Clifford may be enormous, but his voice makes him feel like a friendly neighbor. John Ritter, widely known for Three’s Company, voiced the big red dog in the early 2000s animated series.
He gives Clifford a warm, curious sound that fits the show’s stories about friendship.
Notice how gently Ritter speaks when Clifford makes a mistake. Young viewers hear that being wrong is not the end of the world.
You can learn, make things right, and try again.
13. Jaleel White as Sonic the Hedgehog
For many early cartoon fans, Sonic sounded like someone ready with a joke before racing away. Jaleel White, best known as Steve Urkel on Family Matters, voiced the hedgehog in several animated series.
His lively delivery matched Sonic’s speed and confidence.
Compare Sonic’s wisecracks with Urkel’s awkward way of speaking. The difference shows how voice acting lets a performer build someone new without changing their face.
A few shifts in timing and attitude can change everything you hear.
14. Orson Welles as Unicron
A planet-sized villain deserves a voice that seems to fill the screen. Orson Welles, the celebrated actor and director, voiced Unicron in Transformers: The Movie.
His low, measured delivery gives the character a sense of huge power.
When Unicron speaks, listen to the pauses as well as the words. He rarely needs to rush to sound threatening.
It is a striking lesson in restraint: slowing down can make a villain seem more dangerous than shouting ever could.
15. Meg Ryan as Dr. Blight
Before many viewers linked Meg Ryan with romantic comedies, she voiced a cartoon villain with a very different goal. Ryan played Dr. Blight on Captain Planet and the Planeteers.
The character uses science to cause trouble, giving the Planeteers a problem they must solve together.
Listen for how Blight’s bright delivery contrasts with her harmful plans. A villain does not always need a gloomy voice.
Sometimes a cheerful tone makes bad choices feel even more surprising to an audience.
16. Arsenio Hall as Winston Zeddemore
Ghost hunting takes a steady teammate, especially when the ghosts get weird. Arsenio Hall voiced Winston Zeddemore during the first three seasons of The Real Ghostbusters, before becoming a late-night television host.
Winston often provides a grounded response to the team’s strangest situations.
Watch how his reactions help make an impossible event feel funny and believable. Hall’s performance reminds us that a cartoon needs more than wild characters.
Someone has to respond the way the audience might.
17. Michael Cera as Brother Bear
Brother Bear’s everyday worries sound especially believable when he is learning a lesson. Michael Cera voiced the character on The Berenstain Bears, before many viewers came to know him from Arrested Development and Superbad.
His gentle, slightly uncertain delivery suits a young bear figuring things out.
Listen to how Brother reacts when he makes a mistake or disagrees with Sister. The voice helps keep those moments familiar rather than dramatic.
Even cartoon bears can sound a lot like real siblings.