Naraka Path (character)

He was a priest of burnt village that Jiraiya met during his journey for his disciple. His body was used by Nagato years later as the Naraka Path. While as a priest he emphasised prayer to his followers, he didn't appear to be a ninja, displaying no techniques or insignia to class him as such. That being the case, it makes him only one of two people that were not ninja before becoming one of the Six Paths, the other being the second Animal Path, whose status prior to her death is unknown.