Angel & Nikki — A Universe from the Mind of T.S.Severe Angel & Nikki stories revolve around two best friends, oddly known as Angel and Nikki. Angel is a teenage girl while Nikki is a teen transsexual married to Angel's Daddy. In this universe, that's perfectly legal. There were only four stories originally written with these characters, but that's not to say more stories couldn't be penned in the future. It mostly depends on whether or not the author can get her hands on some of that good mescaline again.