The eye techinque used by both Nagato and Pein/Pain is called Rinnegan
Nagato is Pein, so if he was Pein, then Pein would already have the Rinnegan.
it is the ultimate legendary eye technique kekkie genkia that is only used by the Akatsuki leader named Pein
Pain, also known as Nagato, has six bodies in total called the Six Paths of Pain. Each body possesses unique abilities granted by the Rinnegan eye.
Konan is Pein's partner.
Pein is not a word in the English language. However, Pein is the leader of Amekagure in the anime of Naruto.
Pein's fullname is never revealed. Pein is really Nagato, and just an alias that was created.
Nagato give pein the rinnegan
No Neji does not fight pein.
Pein is taller but not by much.
I heard that Konan and Pein make a great couple, but in Naruto Shippuden, Pein dies without Konan saying she liked Pein, there is no proof.
No, because Pein killed Kakashi, proving one thing. Pein is stronger.
No, Tobi does not kill Pein. Pein sacrifices himself when he revives everyone he kills in Konoha.