How evil are we talking here?
He wants to make heaven fall in(into) hell (his own Heaven)
By corrupting them Slowly and Manipulate the Angels, to kill them when the limits of the extermination contract are violated
which only happened twice , because of that heaven lost 35% (15% exterminators and 20% winners) of its already very low population
therefore extermination is extended once every 3 years to better prepare and elaborate better tactics,
Because Lucifer took great pleasure in telling sinners how to kill angels, so many are armed with angelic weapons,
even to be able to build the hotel Charlie had to make a Deal with Him (yes with her soul even if she has no chain and her soul is always with her) and takes advantage of every opportunity to remind her how much her idea is stupid, telling her it won't work, that Sinners aren't meant to change and that she's wasting her precious time
He exerts a serious psychological influence on Michael wanting him to change his view about heaven (without falling) and for him to see that Heaven are just some bit place for these stupid, arrogant, stingy and heartless Holy beings
and everyone who offended him never got away unscathed
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This Au Have Now have Name :D
Tag: #Dystopia_to_UtopiaAU