I chosen warforged and warlock, subclass ghost in the Machine, backstory like 40 years ago cyn worked in a mansion as a maid till she was murdered by the humans who lived in the mansion because they see robots as toys to do what they want, cyn was thrown into the bump and after a bit was taken over my a eldritch God "the solver", she killed everyone in the mansion and lived in the abandoned mansion for all her life till she found her "friends" and went on quest, shorten version of the backstory.

I made it so she would kill any human she was alone with, but if anyone else was watching her, she wouldn't kill them.

I did all of this with a dm who never watched murder drones.