Does Kakashi know obito is alive?

Answer 1

Kakashi, Obito, Rin and Minato Namikaze (the leader) were students in the same team.

Obito dies and later on it emerges that Tobi is, in fact, Madara Uchiha.

No because obito is not Tobi .madara uchiha is a man from before the hidden leaf he is probably hundreds of years old madara was born before kakashi they can not be the same age because Kakashi is 27

Well as shown now tobi is not madara. However there is no way tobi could be obito cause at the time where the nine tails attacked kakashi was still young and tobi was way older when he fought minato. I dont get why people are not using their brains cause that is a proof that tobi is not obito.

Answer 2

No Tobi is not Obito Uchiha, Obito died and gave Kakashi his Sharingan. Tobi's true identity is Madara Uchiha founder of Akatsuki and The Rival of the First Hokage. Madara also became the Mizukage

NNNNNNOOOOOOOOOOOOO!!
obito is Tobi and kakashi will adventualy find out! there is proof and if you want proof that im right type in "is obito Tobi?" in the question box and read both answers!

(Correcting some of the original answer) Hopefully people have noticed that tobi has the same letters in it as Obito, plus tobi only has a sharingan on his right side. i think that tobi is also madara as well. my hypotheses is that when the rocks caved in on Obito, Madara took the chance to take his body thus creating tobi; half obito half madara.

EDIT

Tobi IS NOT Obito, When Tobi fights Konan he uses the Sharingan in his LEFT side because he sacrifices the one in his right eye when he uses the izanagi. Then he has Nagato's rinnegan implanted to replace the one lost.


---EDIT (17 Oct 2012) By Kondey

Alright listen up, Tobi Is Obito. Just after the explosion the Real Madara uchiha Found him and saved his life using a very ancient technique. straight after Obito thanked Madara and asked if he could Re-surface and Help his Villagei n the War. Obito set off and noticed Kakashi Plunging his sharingan into Rins Chest. Realising that there was no point in life without the girl he loved and the fact that Kakashi was the one who killed her... Obito returned to Madara and trained with him, at the point where Madara was finally dieing Madara useda technique simililar to the on Itachi used in his fight with Sasuke; Giving Obito all of his knowledge and memories and powers. Obito took up the alias of Tobi and took Madara's identity to keep his legacy going. -

Obito is Tobi. Obito only have 1 sharingan because the other one is with Kakashi. which makes sense because tobi also have 1 sharingan. . . also on the right eye(same with obito). His half was reconstructed by Madara using Hashirama's cell and white zetsu. . .
Want another xplanation? Since Kakashi has Obito's left sharingan. They both know how to use Kamui and can access the same dimension. . . Tobi uses Kamui too. . . . Know why? (because he is Obito Uchiha).
Here's another one, Kakashi and Tobi has the Sharingan design. . .Thats because Tobi is obito. And Obito owns both Sharingan. . .
Tobi is not Madara Uchiha. . . He is Obito Uchiha. . . .

Answer 3

no,he dosent.He never known until naruto shippuden episode 150.In that episode Tobi fights kakashi and kakshi uses chidori and attacks Tobi and his mask came off.

Actually He never finds out and tobis mask never comes off until later

Answer 4

Yes. They have met couple of times now.