According to Wes Penre, the job is taken in turn by En_ki and Marduk of the Wes Penre papers literature.
Wes back’s everything up with bibliographic evidence. Just leaving this here for those that have any doubts! The names of Lucifer, En-Ki are actually job titles and are filled by different beings over long periods of time. Should you want to know more I suggest researching yourself.
I have supplied links to other writers on my blog over the years to start peopl off in a search should they be so inclined to do so.