I know. I'm just trying to use any player character as character (at least within same skeleton pool) that gets pulled into sex scene. But it doesn't seem like it could be possible. Changing outfit is easy enough but changing makeups/hairs and such doesn't seem to be possible.I don't exactly get what you're trying to do.. can you be more specific? If you put a sex scene into the sandbox you choose the characters first, it has nothing to do with your player character.
In the past with my other map I've used specific looking default character with trigger forcing outfit change but trying to do more player friendly option here.