You and I have both suffered this pain. You fight for your justice... and I for mine. We are ordinary humans, driven by revenge in the name of justice. However, if we disguise our revenge by words of justice, this "justice" grows, given birth to revenge, and thus the chain of hatred begins. By living through these events now, by knowing the past, we look into the future. That is what we know as history. And from it, we learn that humans are incapable of opening their eyes - of understanding each other
Based on the six Buddhist paths of Reincarnation, each body was named after one of the different "paths": Deva, Asura, Human, Animal, Preta, and Naraka. The only common feature shared by these bodies was their bright orange hair and their Rinnegan. Each also had a vast number of body and facial piercings of various shapes, sizes, and patterns. Each body seemed to serve a specific purpose in battle, such as summoning, repairing, and defensive capability. There is also a seventh body, the Outer Path, with control over the forces of life and death. Fukasaku stated, the best way of fighting Pain is to take out the paths one at a time as they were most formidable when fighting together in combos.