Mammon is essentially the family buttmonkey. He’s the one everyone takes everything out on, he’s the first one to be considered guilty in a problematic situation–and, yeah, that’s because he has a history of trouble and they have reason to expect bad behavior of him but. Nobody gets mocked, pushed around, or yelled at like Mammon does.
And to be perfectly honest?
I don’t think he hates it.
Looking past his noted tendencies towards masochism, he is the Avatar of Greed. His function as an entity is to want. Greed is associated with money and valuables, but I don’t think Mammon only wants material things.
His brothers push him around but he’s second only to Lucifer in strength. He could easily shut them down if he really wanted to. But he doesn’t mind them mistreating him as much as he acts. He wants their attention. The opposite of love isn’t hate, but indifference, and if they dislike him, torment him, they’re still thinking of him, they still feel something for him, and for now he’ll accept that.
For now, from his brothers, he’ll accept attention as affection, even if that attention is bad or painful.
If Lucifer didn’t care about him, he wouldn’t torture him over bad grades. Satan wouldn’t try and keep him from getting held back in school or go on an adventure with him to steal artifacts from Diavolo’s castle. And so on. He sees those little things in their actions and intentions–and also just subtly takes their abuse in stride.
And you? You were assigned to Mammon from the very start. You were handed to Mammon and he was told “this is your responsibility now.”
So to him? You’re his. You were given to him, you made a pact with him first, he’s by your side nearly anytime something goes down.
You have something, you and him. In Mammon’s eyes there is something between you that goes beyond a pact or valued possession.
And when his brothers start to take notice of you, it scares him. When they try and interfere with what he percieves you as having with him, it scares him.
Money can be spent and lost, but he can always get more money. Objects can lose value, go missing, be broken, be sold, but objects can be replaced.
You, however, are a conscious thing. You have feelings and a mind of your own, you are beyond his control.
If you decide you don’t wanna be near him anymore, if you decide to choose someone else over him, if you’re given away or harmed and taken away or otherwise lost or leave his possession, there’s probably not going to be a buying you back. There’s probably not going to be a replacing you.
Even worse, especially if it’s one of his brothers, he’ll have to see you being paraded about and rubbed in his face all the time and know he lost you.
He may not understand monogamy well himself but he does know it’s common with humans.
He can gamble money away, sell off things he owns, sell off the things others own, he can mug and steal and make and win bets, but you and things that are yours, those are his most valuable possessions. You and what is yours are his most precious things.
He’s not going to relinquish his hold on you or what you have anytime soon, not if he can help it. You are too valuable. You mean too much–not just to others, but to him most of all.
…this is rewritten from a discord reply in a server i’m no longer part of, so it’s disjointed as all hell but what I’m getting at is that Mammon’s greed comes in forms beyond material. Sometimes those forms are unexpected–sometimes what he’ll take and be greedy over is unexpectedand isn’t always something good by traditional means. Of the seven rulers of the Devildom, of his brothers, he is the second strongest–faster, physically stronger(Beel notwithstanding), more demonically capable than all of them but Lucifer. He’s the Avatar of Greed itself and he “governs all forms of it.”
And it hurts. It’s an endless cycle of want and risk to get what he wants, to get more by most any means necessary, but he can’t stop. He can’t get rid of that greed because it really is who he is now.
Despite all he has and is and can obtain he’ll forever be insatiable. He’d be lost if he wasn’t.