Merrick as a sort of Starz' Spartacus-inspired lord or emperor type of personage, who owns a harem of slaves made up of the Old Guard (you can include Keane and Copley as more favoured slaves or more loyal servants too if you'd like). Some of them are warriors that he makes fight for him in the gladiator ring, some of them are house slaves he forces to coddle him and take care of his every whim, but all of them he uses for sexual gratification when he feels like it. And sometimes he's a kinky mf and makes them do weird things to/for him. (Thinking a lot about that scene where he wanders very close to Joe and his men warn him to stay away and Joe headbutts him, and he looks intrigued by that experience before taking pleasure in stabbing him.) None of the Old Guard enjoy any of this and have zero loyalty to him, and maybe eventually they successfully murder him and escape, although I don't require that to be happy with this prompt.

Absolutely not looking for historical accuracy here.