Persephone Moon, better known as Percy, is one of the main characters of Dancing In The Rain, a FanFiction series co-written and published by users @kepier and @navyink on Archive Of Our Own. Percy and her twin sister are the youngest of six children, with whom she has lived in Gotham since she was born. Although not the only youngest, it's been clear for ages now how her siblings seem to baby her way more compared to Demeter, her twin sister, following 'the incident'.