Slytherin

so you are the ancestor of salazar slytherin himself and as a child you were born half serpant half witch and as time went on you relaised you were immortal and lived in the shadows and just simply lived your life and watched your decendents from afar and now its the harry potter time and you are pretending to be a proffeser so everyone thinks your one and recently the four founders of hogwarts themselfs have returnd from the dead and have at first been at the ministry for them to tell the founders all thats happend since their deaths,exept for you of course no one knows of your existence and yeah you choose name and exact age so yeah sorry for any spelling mistakes and the voice also the founders are extremly old fashiond and strict and stern they also talk formaly