You know I’m don’t like Lucifer punishing mammon for everything he does and to be honest if I was Mc I’m would slap him in the face and say that he a pathetic excuse of brother and after that go and confort mammon
While I don't like Lucifer's harsh punishments and I'm not trying to justify them it should be noted that they are a result of Lucifer's own trauma and worries and this is actually canon
• Despite how obviously Diavolo adores Lucifer and his brothers, Lucifer still can't get over the fact that his Father and Michael supposedly adored him and his siblings too and yet they were ready to kill Lilith for breaking the rules.
• And despite how many times it's proven that Diavolo's willing to forgive all of their fuck ups Lucifer is still waiting for that slip up, and that's one of the main reasons he's so harsh with Mammon's punishments.
• Because Mammon's the one who breaks the most rules (whose sin is the most dangerous to Mammon himself cause it gets him in trouble with people) and if Diavolo sees Lucifer is taking the needed steps and dealing out adequate punishments then maybe he'll be satisfied, and maybe they won't have a repeat of Lilith.
• Angel! Lucifer canonically didn't treat Mammon (or the others) that harshly. He let Lilith break the rules, despite knowing that she was sneaking off to see a human. He let her break the rules and she died. Demon! Lucifer is desperately trying to stop that from happening again, because he blames himself for Lilith's death
• In a chat, Diavolo is genuinely pissed off at Mammon cause he tried to steal the Demon King's treasure and Lucifer, through a private chat, asks Diavolo to let it go, to not take action, to let Lucifer handle the punishment
•It's the same thing that happens with Belphie in S1. Lucifer doesn't tell Diavolo what Belphie is planning cause he doesn't trust Diavolo to value the life of one demon over the safety of the Devildom. The same way God/Michael didn't value the life of one angel over the safety (secrecy) of the Celestial Realm. So he takes matters into his own hands and locks Belphie up.
Lucifer is more than willing to vilify himself to his brothers in order to ensure their safety. He'd rather punish them himself and have them hate him than risk another higher up killing them for stepping out of line. And in S3 it's revealed that Lucifer does genuinely believe that his brothers hate him.
☆ It's also important to note that these are all supernatural beings and punishments for them don't work the same way they do for humans:
° For one, Lucifer's punishments don't seem to affect Mammon. He's back to his usual bs a couple days after the punishment. Vs Michael's punishments that still, thousands of years later make Mammon shake. I talk about this in more depth -> here
° Despite everything, Mammon is still Lucifer's favourite (and I believe this is why his punishments are so much worse than the others too, Mammon was the one who held Lucifer up after the Fall, who looked after the others, who Lucifer relies on to get work done,who Lucifer spoils rotten, who seems to actually see Lucifer as a parental figure and the possibility of losing Mammon must be terrifying)
° Again, despite everything Mammon, as an angel, in S3 looks up to and wants to be like Lucifer. Mammon, as a demon, in S3 freely admits to loving Lucifer and seems almost offended that MC didn't realise that
° Mammon still knows that he's the favourite, cause he never refutes it when it's brought up and he knows that Lucifer covered for him with Diavolo in that chat
° In a memory card the younger brothers (minus Belphie) are drunk and insulting the three older ones. Mammon snaps, transforms into his demon form and goes to beat them up (along with Levi & Lucifer). Except Mammon never gets pissed off enough to transform into his demon form, even when he's insulted badly he closes up and runs off (One Too Many Insults Devilgram) so what's the difference between this moment and that devilgram? In this card they drag Lucifer into it as well when they insult Mammon. Saying how Lucifer keeping Mammon around is making them lose respect for Lucifer. It's almost immediately after this that Mammon transforms. No matter what Mammon has a great deal of respect for Lucifer and he knows that as angels it was Lucifer's intervention that stopped Mammon from initially Falling as an angel
Also have you noticed that after S1 and in the newer events and devilgrams Lucifer has become more lenient, that now his punishments are just tying Mammon up or at most making him eat Solomon's food? Well here's why I think he's become less harsh:
◇ Though I don't think he's completely over it, I think the whole incident with Belphie & MC in S1 showed Lucifer that it's highly unlikely Diavolo's gonna turn on them suddenly despite how pissed he is. It's why he's now, in S2, even secure enough to punish Diavolo - something S1 Lucifer wouldn't even dream of
Bonus: list of times when Lucifer spoilt Mammon rotten
The first fic I ever wrote for this fandom was about (gn unnamed) MC confronting Lucifer about the way he punishes Mammon. It's got hints of MC x Mammon and here's the link:
The Thing About (Demon) Families
In which Lucifer reflects on one of his six annoying baby brothers while a human not-so-silently judges him.
a.k.a. the one where Lucifer is trying his best to be a good big brother but in all honesty he probably needs therapy (they all do)
Lucifer is a character with a lot of depth and issues and character development and though he was the one character I hated when I first played OM! (during S1) it's hard to hate him now after everything, even if I do acknowledge his many flaws
So yeah, Lucifer may be a grade A douchebag but he's not a pathetic excuse for a brother.
