Originally posted by zopzopIsn't Satan Lucifer? I'm confused
Satan, not Lilith.
In Carey's series, Death did state that Lucifer and Michael were God's "first big ideas", or something along those lines... And although it was heavily implied, I can't remember if it was ever explicitly stated that Lucifer was the first being in Hell -- just that he was the most powerful being in Hell. /shrug
Either way, I'd go with Knull here. First of the Fallen never really impressed me.
^ There's a real world reason for the disconnect between the First of the Fallen and Lucifer. Either way, Garth Ennis did his best to not encroach on Neil Gaiman's story. Both of them had their own stories to tell and they are both seminal classics of comics literature: Hellblazer: Dangerous Habits and Sandman: Overture.
Dan Watters seems the last author to have a say and he did exactly the same when he brought John Constantine into the same panel as Lucifer. He had never met Lucifer until then, John had only met beings like him.
Keep the two separate. It does not necessarily denigrate Lucifer's character.