In the Naruto Anime and Manga, Rinnegan is a powerful eye force. Only a person in his body is flowing Uchiha and Senju blood that can awaken this legendary eye strength.
Uchiha Madara was the first to realize this after accidentally evoking Rinnegan for injecting Hashirama Senju's DNA into his body.
Time lapse runs, it turns out not only Uchiha Madara who managed to have Rinnegan eyes. There are some other shinobi who also had time to use the power of this eye.
Who are the shinobi? Here are 4 Shinobi who have eyes Rinnegan :
1. Rikudo Sannin
He is the first shinobi to have rinnegan eyes. She is the son of Princess Kaguya who eats the fruit of chakra from the chakra tree, thus becoming the first man to successfully control the chakra. Not surprisingly, Rikudo touted as an ancestor of the shinobi.
2. Madara Uchiha
After Rikudo Sennin died and divided his power to his two sons who became known as the ancestors of the Senju and Uchiha clans, the power of Rinnegan's eyes seemed to be just a legend.
Until finally Uchiha Madara who lost to Hashirama Senju inject Hashirama DNA into his body and accidentally managed to evoke the eyes of Rinnegan.
It turns out to raise Rinnegan, it takes someone who in his body to flow blood Uchiha and Senju.
3. Nagato / Pain
It is said that the Rinnegan owned by Nagato since childhood is a secret gift from Madara Uchiha. Sounds unique indeed (or sounds a bit forced), but the storyline Naruto narrated thus.
4. Uchiha Obito
Rinnegan's eyes owned by Obito are the same eyeball that Nagato possesses. After Nagato dies at Naruto's hands, Obito takes the rinnegan's eye that Nagato left to put in his eyes.
October 2014 update
5. Uchiha Sasuke
The emergence of Kaguya Ootsuki as the core of all evil in the Shinobi world makes Naruto's story forced to reverse the direction of the past.
Until finally one of Sasuke's eyes turned into Rinnegan. It is not explained exactly whether Rinnegan's rise to Sasuke was due to the influence of Juugo's body cells that were transplanted into Sasuke's body when he was almost dying at the hands of Madara, or because of Rikudo's Chakra Traveler Monday who left him.
What is clear, Sasuke's Rinnegan different shape with Rinnegan who previously existed.