The Dragon's Appearence resembles to the Legendary Pokemon, Kyrem. In Kyuubi Form, The Orange Charen resembles to Black Kyrem and in Orochi Form, the Red Charen resembles to White Kyurem and Palkia
After the Tailed Beasts were created, Charen the Legendary Dragon have created the Five Shinobi of Eight Paths. First was Konomaru, who was called the Great Leaf, The Second was Iwamaru, who was called the Black Rock, The Third was Kirimaru, who was the Noble Mist, Fourth was Kumomaru, who was the Colored Cloud and the Fifth was Sunamaru, who was called the Sand Wanderer. Each Shinobi was given a Special Task, Konomaru receives the Power of Time, Kirimaru receives the Power of Liberation, Iwamaru receives the Power of Space, Kumomaru receives the Power of Tailed Beast Balance and Sunamaru receives the Power of Puppet Crafting. These Five Shinobis were used as Keys to seal Charen into Temple of the Forest.
Twelve years before the start of the series, the Nine-Tailed Demon Fox attacked Konohagakure destroying much of the village and taking many lives. The leader of the village, the Fourth Hokage sacrificed his life to seal the Nine-Tails into a newborn, Naruto Uzumaki. Orphaned by the attack, Naruto was shunned by the villagers, who out of fear and anger, viewed him as the Nine-Tails itself. Though the Third Hokage outlawed speaking about anything related to the Nine-Tails, the children — taking their cues from their parents — inherited the same animosity towards Naruto. In his thirst to be acknowledged, Naruto vowed he would one day become the greatest Hokage the village had ever seen.