Who is the weakest Sith that could take over the Lost Tribe?
Take your Sith Lord of choice from any era, and drop them on Kesh with no resources except the cloths on their back, no allies, and they gotta stay on Kesh.
They can be overt or subtle, either show up and announce they're in charge and face all challengers, or playing it clever and make/take a power base, but who's the weakest Sith lord who could pull off a takeover?