Doktor Rane
Currently, as far as we are aware, Doktor Rane is still conducting his experiments in relative safety in Highgate.
A mad scientist who loathes being touched, Doktor Rane is The Gallows resident “doctor”. However, he is your go-to if you have a dead body lying around - and will pay relatively handsomely for it. While being an absolute character, Doktor Rane seems to be working on a way to cure the Wasting Madness that is plaguing Highgate.
Unbeknownst to Melinoe, Doktor Rane is also working with a mind flayer in his experiments. It is unclear whether Doktor Rane really has any mind of his own or if he is more of a puppet for this mind flayer.