Charles Michael "Charlie" Adler (born October 2, 1956) is an American voice actor and voice director. He is the voice actor for Nat Smurfling (in Smurfling form) in the Smurfs cartoon show. He has also done voice work for Brandy and Mr. Whiskers, Tiny Toon Adventures, SWAT Kats: The Radical Squadron, Cow and Chicken, Aaahh!!! Real Monsters, I Am Weasel and Rocko's Modern Life. He is best known as the voice of the Decepticon Starscream in the Transformers film series.