Whenever you were watching an animated movie or a cartoon when you were little, you rarely wondered who’s voicing this or that character. Most of the time, the voice was associated with that very character. Mickey Mouse sounded like Mickey Mouse, and Donald Duck was Donald Duck. Who knew there were real people behind them?
Now that we’re all big-brain adults, we know that voice actors exist. But the truth is even more bizarre: a lot of those VAs are big-time celebrities like world-renowned singers and actors. It’s hard to believe how many famous people enjoy lending their voices to big and small animation projects.
From Val Kilmer as Moses to Busta Rhymes as Reptar, here are 21 celebrities who voiced your favorite cartoon characters!
Thomas Brodie Sangster – Ferb in Phineas and Ferb

Val Kilmer – Moses in The Prince of Egypt

Mel Gibson – John Smith in Pocahontas

James Avery – The Shredder in Teenage Mutant Ninja Turtles

Michael J. Fox – Stuart Little

Bruce Willis – Spike in The Rugrats Movie

Vin Diesel – The Iron Giant

Tim Curry – Nigel Thornberry in The Wild Thornberrys

Fergie – Sally Brown in The Peanuts

Oprah Winfrey – Eudora in The Princess and the Frog

Meg Ryan – Anastasia

Busta Rhymes – Reptar in The Rugrats Movie

J.K. Simmons – The Yellow M&M

Jaleel White – Sonic The Hedgehog

Zach Braff – Chicken Little

Demi Moore – Esmeralda in The Hunchback of Notre Dame

Cameron Diaz – Fiona in Shrek

George Clooney – Fantastic Mr. Fox

John Travolta – Bolt

Dakota Fanning – Coraline

Morgan Freeman – Gandalf in The Lego Movie