Agnes is a Persona in Persona 5 Royal.
"The mysterious female pope of the Middle Ages. She posed as a man and eventually made it all the way up to pope due to her unrivaled intellect. Her existence shook the history of the Catholic church."
Agnes is based on Pope Joan, a legendary Medieval woman who reigned as pope for a short period, going against the Catholic Church's ingrained tradition of male popes. Though the story was widely believed for centuries, modern historians have found no evidence of her existence and believe the legend to be a work of fiction meant to discredit the church.
Most versions of her story describe her as a talented and learned woman who disguised herself as a man, often at the behest of a lover. In the most common accounts, due to her abilities, she rose through the church hierarchy and was eventually elected pope. Her sex was revealed when she gave birth during a procession, and she died shortly after, either through murder or natural causes. The accounts state that later church processions avoided this spot, and that the Vatican removed the female pope from its official lists and crafted a ritual to ensure that future popes were male.
Persona 5 Royal
Agnes is the third-tier Persona of Makoto Niijima.