Also, ace PB choice for demonkind with Mr Cooper, there.
As yet, Lucifer is keeping his identity pretty quiet but he does like to send out little feelers, to find out who is around and how loyal they potentially are. He's a total juvenile delinquent right now but that's par of the fun.
As well as that, there's Asmodeus being Agrat Bat Mahlat's son? So Samael would pretty much be LOL stepson. He can be a bit troll-like, I'm afraid.