I'm not sure what you'd think of this idea, but I was thinking maybe my secondary/back up character (https://elliquiy.com/elluiki/images/c/c3/SaraNude.jpg) could be a slaver captive.  She wouldn't necessarily have to immediately join the party if she was rescued.  Actually what I'd really kind of like to do is have a thread where she stops to bath on the way to the base camp and ends up fighting a hopeless last stand before being captured (the current iteration of the character is an Eldritch Knight so she's capable of putting up a fight when caught with her clothes off).  I realize that might be a bit much to ask for but I thought I'd see if you liked the idea.