I have an idea for a backstory, but I need you to approve an element key to the whole thing. Basically, my character would be a member of a special tasks group formed by, and answering only to, the dark lord to act as both an elite guard and, well, a special tasks group assigned to make sure his regime is stable and secure using whatever means necessary, whether that be assassination, kidnapping, terrorism, etc. There's undoubtedly a lot more to it than that, but that's the fundamentals of it.