When watching cartoons, it's hard to figure out who the voice actors behind all the characters are. We're so invested in the storyline that we don't even realize a famous celebrity is behind one of our favorite cartoon voices.
It's fairly obvious that Eddie Murphy voices Donkey in Shrek and Ellen DeGeneres voices Dory in Finding Nemo, but not all cartoon voices sound just like the voice actor.
Here are 12 well-known celebrities who were behind some of the most famous cartoon voices, and you didn't even know it!
1. Fergie - Sally Brown in The Peanuts
I couldn't have guessed this in a million years. The world first heard the American pop singer's voice when she starred as Sally Brown in The Peanuts. But if you watch the video below of Stacey Ferguson as a kid singing, it won't be so much of a surprise.
2. Oprah Winfrey - Eudora in The Princess and the Frog
The talk show host is no stranger to acting, but no one could have guessed that the character of Eudora, Tiana's mom, was played by the billionaire herself! In hindsight, who would have been better to play that role? Oprah's name is now on the list of the first voice actors to be a part of a Disney African-American princess movie.
3. Whoopi Goldberg - Shenzi in The Lion King
Whoopi's voice is quite distinct, but if you're fully engrossed in the movie, you may not connect Shenzi's voice to the actress.
4. Vin Diesel - The Iron Giant
Before Vin Diesel became one of the most recognizable faces on The Fast and the Furious, he voiced the robot in The Iron Giant. He was great at producing all those guttural sounds, which probably prepared him to take on the role of Groot in Guardians of the Galaxy.
5. Robin Williams - Genie in Aladdin
You'd have to watch this movie again to hear Robin Williams's familiar voice. It's not that he doesn't sound like himself, but when you watch this movie as a kid, you're just completely mesmerized by the Genie that you don't even put two and two together.
6. Bruce Willis - Spike in The Rugrats Movie
You're telling me that the man who starred in The Sixth Sense, Die Hard, and The Fifth Element voiced Spike?! The goofy dog only barked in the TV series, but in the The Rugrats Movie and Rugrats Go Wild, Spike had a lot to say, and thanks to Bruce, his character got a little more interesting.