All right, Jayde-chan. For starters, Naruto is the main character of a manga/anime series known as Naruto. Surprise! I guess we can call Naruto a title character too. He's ninja who believes in hardwork and is quite stubborn; however, he is quite courageous and a powerful fighter when roused. His strength lies in his goal to improve himself as well as his massive hidden reserve of chakra owing to his nine-tailed demon fox, Kyuubi.
Kyuubi is a nine-tailed demon fox and is the most powerful of the tailed beasts. He was sealed within Naruto's body when Naruto was still a baby. He will grant Naruto power when the latter is in a pinch. Lately, he's becoming more dominant and that's quite troublesome.
Sasuke is Naruto's eternal rival and friend. He's one of the last surviving members of the now extinct Uchicha clan. Calm and collected, Sasuke was the best student in Naruto's ninja class scoring top grades in everything. He has extraordinary talent as a ninja and commands the power of the Sharingan... cursed eyes that allows the user to copy most other ninja techniques perfectly.
Ero-sennin (perverted hermit) is a nickname given to one of the "Three Great Ninja" of Konoha (Naruto's ninja village). He's a powerful ninja and a pervert and is the author of a series of R-rated novels who Kakashi loves to read. The actual name is Jiriaya and he can utilize the Sage Mode technique where the user is bestowed with an awesome boost in fighting power.
Kakashi is Naruto's and Sasuke's sempai. He is a mysterious ninja who is quite powerful himself and is known as the "Copy Ninja Kakashi" because he has utilized several ninja techniques with his transplanted Sharingan eye.
Not the best answers, but here you go =3
