Answer: Itachi Uchiha
When Sasuke was younger, his older brother, Itachi, slaughtered many members of the Uchiha Clan. He spared Sasuke because he thought he wasn't worth killing. Itachi murdered his clan to test his own strength.
From Quiz: The Ultimate 'Naruto' Test
Answer: Rocks
'Rocks' was the opening song until episode 26.
From Quiz: Opening and Ending Songs
Answer: Haku
Haku is the tool Zabuza wishes to use to take over his country, Haku has an advanced bloodline.
From Quiz: A "Naruto" Quiz - Episodes 1-23
Answer: The Akimichi Clan
The Akimichi Clans signature Hiden converts calories into chakra through the use of Yang Release.
From Quiz: Particularities of the Narutoverse
Answer: Genin
Despite officially being a genin, he has proven himself to be a skilled and cunning ninja far beyond that level, even Jiraiya and Orochimaru remarked at one point that his skills were comparable to those of Kakashi Hatake. Kabuto entered the Chuunin exam seven times, gathering information for the Sound village. Each time that he had reached the final rounds, he opted to drop out so he could compete again and gather more data for his master.
From Quiz: For Avid "Naruto" Fans
Answer: Sasuke
Sasuke graduated top of his class and was obsessed with getting revenge on his brother, who killed his entire family.
From Quiz: "Naruto" #1
Answer: Kakashi Hatake
Asuma is Team Ten's sensei.
Kurenai is Team Eight's sensei.
Minato was the late fourth Hokage.
From Quiz: Naruto [1]
Answer: Itachi killed them with help
Itachi had help from Obito Uchiha.
From Quiz: The Ultimate Impossible "Naruto" Quiz
Answer: Sakura
She was first shown to be a skilled medical ninja when she created an antidote to Sasori's poison. This showed Sakura's growth and was even likened to Tsunade.
From Quiz: "Naruto" Shippuden
Answer: Rock Lee's primary lotus
Thanks to his battle with Lee, he was able to win his fight in the preliminaries.
From Quiz: "Naruto" Chunin Exam
