Naruto Uzumaki is the protagonist of the ninja manga/anime Naruto. He's your typical shounen manga hero: loud, brash, relentlessly optimistic, not-too-bright, and intensely driven. His signature techniques are the Shadow Clone Jutsu (also known as the Kage Bunshin no Jutsu), where he can create up to dozens of duplicates of himself, and the Rasengan, or Spiraling Sphere, which grinds into a foe with a rapidly-spinning ball of energy. He's also fond of the Sexy Jutsu, where he turns into a hot naked chick and gives most males in the area massive nosebleeds.
The word "Naruto" means a cake of sliced kamaboko (fish paste), and the word "Uzumaki" means a whirlpool.