Bavana is kinky and lustful, as a latex parasite, she ejects herself on people and cover them entirely, taking parts of their memory into her to build a character with it.
Short Story
Bavana was a try of Babylon to remake the Harbingers of Apocalypse, but it didn't succeed. Bavana stayed in hell all this time until Black allowed her to get out recently, and she just arrived into Akasen, ready to take a taste of it, and parasite people with her latex self.