I don't think it has been revealed, if he even joined at all 0_o
Minato has no friend that became a member of Akatsuki.. only Jiraiya's friend (Orochimaru). None of Minato friend joined Akatsuki.
Sasori was in his 20s when paired with Orochimaru.
Orochimaru... i think.
No, Despite Scott Ransoomir's rather humorous commentary on "why orochimaru got kicked out of Akatsuki" they have not desplayed such behaviour.
The latest one to die was Kisame (or Konan, but she defected from Akatsuki), but Zetsu and Obito is still alive (and Orochimaru since he once were an Akatsuki)
Yes he does but not as orochimaru He has control over oro's powers inside his body
At the end of Naruto (original) Sasuke wants power and joins orochimaru. In Shippuden Sasuke gets stronger and more evil by killing more people. Sasuke kills Orochimaru and joins the Akatsuki. Right now Sasuke's target is Naruto and Konohagakaru.
He wasn't replaced because he kept his ring
SPOILER ALERT Depends on what you are asking. His partner in the Akatsuki is Kisame Hoshigaki. I assume that is what you mean.
Kabuto now has powers like orochimaru did and can do the reanimation jutsu
his name is orochimaru and he was team mates with tsunade and jyriia i hope that helped
Since Sasuke joined Akatsuki as a temporary ally and Tobi was leading Akatsuki from the shadows, Hidan