there are no precise answers kuyobi in monster summoned by uchiha madara
Kyuubi is a fictional character from the anime Naruto, specifically the Nine-Tailed Fox sealed inside Naruto Uzumaki. The character has existed for centuries, as it was created during the time of the Sage of Six Paths, making it an ancient entity rather than having a specific age in the conventional sense.
Kyuubi is Japanese word. 'Kyu' means 9 in Japanese. So Kyuubi is 9 tailed
Kyuubi was forced to attack Konoha. You cannot kill an immortal and all the bijuu are immortal. The most the Yondaime could do was seal Kyuubi in his son, Naruto, who was only hours old. The sealing jutsu he used took his life. Madara forced Kyuubi to kill innocent people. I doubt Kyuubi would have wanted to attack. He seems like the kind of creature to attack only when provoked.
You cannot kill an immortal and Kyuubi is immortal. Who knows how old he is. I'd consider him "undead." Maybe to get his amazing, and extremely deadly powers he had to halfway die. I don't know. His origins and future are shrouded in mystery.
the kyuubi is the nine tailed demon fox yodaime sealed within Naruto.
Not necessarily "useless", but he is less powerful without Kyuubi.
No. Kyuubi strongly resents the fact that the Yondaime managed to seal him.
Chapter 299 was the first time Naruto went kyuubi.
Kurama
Almost everybody
Kyuubi
Um...O.o No. Kyuubi is the title of the bijuu sealed inside of Naruto. Naruto's mother was Uzumaki Kushina.
Yup. Because of the seal, Naruto doesn't have access to all of Kyuubi power and Kyuubi can easily regenerate all his chakra. He probably has other tricks up his sleeve.