Pain

Pain (Clearly says "pain", not "pein", BTW... not that I expect that to change many people's minds)

Catchphrase Text:
People, countries, and the world will know pain!!

Title Text:
The shinobi in which the Rikudou eyes reside, a "god" born form a cycle of strife

Body Text:

Akatsuki, the group that secretly plots to hunt the Jinchuuriki and capture the Bijuu!! Their leader is none other than Pain. In pondering his mysterious true identity, that which serves as a hint is the Rinnegan appearing in his eyes. What will this "god", describing himself as having "attained growth through pain", bring to the world? Will it be "peace", or will it be "destruction"!?

Ninja ID: ?
Birthday: ?
Height: 176.5 cm Weight: 57.2 kg Blood Type: ?
Personality: Emotionless
Favorite Food: Unknown
Least Favorite Food: Unknown
Desired Opponent: Uzumaki Naruto (the Nine-tails)
Favorite Phrase: ???? "The stars hidden on a rainy night" (idiom referring to "things that may exist, but are nonetheless unseen" or "things that are extremely rare")
Hobbies: Unknown

Mission Stats, Academy Graduation, Chuu-nin exam passing: All "?"

Lower Left Text:
The expressions of Pain are always devoid of life. One is incapable of finding any form of emotion in his face.

Nothing special about Nagato. It talks about how the Second Ninja War totally ruined his life. He lost both his parents. But at that time he miraculously gained one of the 3 Great Doujutsu, the Rinnegan, when he was trying to save his friend. (at least confirms that he wasn't born with it . He activated it while saving Yahiko)

Shouten no Jutsu - the jutsu Pain used to transform random men into Itachi and Kisame.

Rikudou Sennin - nothing new. All as stated in the manga.

He is the ancestor of shinobi. He created all the jutsu. He can bring peace or destruction to the world. I can't read the last sentence though.

Rinnegan
Held by Rikudou Sennin, ancestor of shinobi. Noted by its ripple shape. One of the 3 Great Doujutsu along with Sharingan and Byakugan (so, confirmed the third one is Byakugan). Known as the noblest eye. Holder can learn all the ninjutsu and all 5 elemental recompositions (yes, only 5). It's said that he will either be the God of Creation that brings peace to the world or the Destroyer that ruins the world.