Naruto is the main character of the show. He is a loud, annoying, and dumb kid, in other people's veiws that is. With the nine tails kyuubi sealed inside him, he has many advantages and disadvantages. Naruto never gives up and works hard to someday become hokage of Konoha.
Sasuke is a boy of few words and more action. He rarely smiles or laughs, and wants to defeat his older brother Itatchi for killing of his clan. Sasuke will do anything for power, and is in a time of darkness.
Sakura is very kind, but in the beginnig, also very weak. She works hard to become strong and is very smart, she also has a soft spot for Sasuke.