Thanks for the dump.
Lucifer is such a fascinating character to me.
He's a "good guy" who loves his friends and wants to protect them, yet he's so stubbornly fixated on an utterly futile war that he has zero chance of winning. He already saw the future and foresaw himself fighting this pointless war in vain, yet he chooses to go along with it because he can't bring himself to give up and genuinely thinks that he win if he just tries hard enough.
It's such a good take on pride. He's not "egotistical" exactly, but his actions are clouded by his own hubris. It's pitiable, really.
I also think it's interesting how Lucifer is very quick to condemn God, yet he's weirdly lenient when it comes to the people on "his" side. I know it's played for a gag, but the fact that Lucifer tries (and fails) to defend Beelzebub of all people is... telling.
10/10 character.