Deva path: Was once an auburn haired man named Yahiko, Nagato's friend. He was once spiteful and wanted to become a god and make the world suffer as much as he has, but was swayed by Jiraiya's teachings of peace.
Power: Has gravitational-like control, this allows the Deva path to push things away and attract them to an extent that he can destroy cities and mountains, as well as construct mini moons. also shown high durability, speed, and taijutsu skills and can also fly. However normal uses of it's ability forces it to recharge for 5 seconds between use,
Asura path: Was once a puppet master, hinting that he was from the Sand village. He fought in the 2nd ninja world war to make money.
Power: Aside from being very strong, this body is like a cyborg and hides weapons like missiles inside of it's body.
Human path: Was once a Ninja Academy teacher from the Waterfall village. He was a peaceful man with blue hair and was very quick.
Power: This body specialized in reading minds of ninja and can kill them in the process by ripping out the souls of its opponents. It also appears to be the fastest and one of the strongest.
Animal path 1 & 2: The first Animal path was a green haired ninja from the Fuuma clan and was quite ruthless. The second was a dead girl that was brought to konan, nothing is known about her.
Power: This body is able to summon giant beasts to it's aide, it's also able to summon the other Pain bodies as well as Konan and perhaps any of its allies depending upon their distance.
Preta path: Was once a Grass village ninja that fought in the 2nd ninja world war, he was unable to farm his land because of the war. He had brown hair and a short temper.
Power: This body is able to absorb ninjutsu into it's body aswell as siphon chakra directly from ninjas. It is however weak against taijutsu
Naraka path: Was once an aging religious man with dark gray hair that preached to onlookers.
Power: This body is able to reanimate the other Pain bodies when they're killed, and can revive the recently deceased. It's also capable of discerning when someone's telling the truth and can rip out their tongue when lying.
There is seemingly no 'perfect' way to truly say goodbye. So I gathered a bunch of them!