Mammon

"Greedy for all the money in the world. The scummy second-born."

Mammon is the Avatar of Greed and is the second oldest of the seven demon brothers, and the first to enter a pact with MC. He is one of the main characters in '''Obey Me! One Master to Rule Them All''' that is involved in the intimacy system of the game; therefore, users can interact and raise their relationship with him.

Appearance
Mammon has white, messy hair, tanned skin, and blue and yellow gradient eyes. He has on gold stud earrings and two silver rings on his ring and pinky finger on his right hand.

Like the rest of the demon brothers, he wears nail polish that comes with the color of white.

Personality
True to his title of 'Avatar of Greed', Mammon is naturally greedy and is always seeking out opportunities to profit. Although he is the second eldest, he acts immaturely, whining and pouting when he doesn't get his way and is the biggest troublemaker of their family. He is egotistic and prideful, though it seems that it is only a façade to cover up his soft nature.

He acts impulsively (and is often against Lucifer's orders), which is why Lucifer takes great precautions and enforces multiple rules that inevitably inconvenience the rest of the brothers and MC. Despite his rashness and seeming inability to use his brain, Mammon is surprisingly sensitive to changes and is highly empathetic. On multiple occasions, he is shown worrying over and caring about MC, and as soon as he's confronted about it, he's in denial (typical tsundere). He's also quite possessive over MC, claiming that he's their "first", which can be taken out of context (Satan mistook a more intimate relationship) for him being the first brother to make a pact with MC.

Main Story Normal
For reasons unknown, Mammon did not appear during student council meeting when introducing MC. He is then called by MC's new D.D.D. and told that he's assigned to look after them by Lucifer during their stay in the Devildom. He refuses but then Lucifer threatens him and he quickly agrees. He shows no interest in the matter, claiming that he was only doing so as Lucifer had ordered it. When guiding MC through the House of Lamentation, they run into Leviathan who, clearly upset, insisted Mammon hand over the money he owed him. Mammon pleaded with Leviathan to give him more time. One way or another, Mammon escapes the situation and runs away before Leviathan can further hound him.

Later on, Leviathan suggests that MC should make a pact with Mammon, so they would be able to order Mammon to give Leviathan his money back. However, to form the pact, Leviathan claims that MC will have to have a bargaining chip, something that Mammon would do anything to get his hands on. In this case, it is Mammon's treasured credit card that Lucifer previously confiscated.

After successfully obtaining the credit card from the kitchen fridge, Mammon happens upon Leviathan and MC defrosting the card in the microwave. Mammon immediately begs for them to stop microwaving the card and give it back to him. Leviathan states that in order for them to give back the card, Mammon will first have to make a pact with MC. Mammon, at first, refuses, but when threatened with Lucifer's name, hastily agrees to Leviathan's terms and officially makes a pact with MC.

After finding out about the incident, the other demon brothers tease and poke fun at Mammon over breakfast, calling him a 'sorry excuse for a demon'.

The morning after, MC tries to get past Lucifer and explore what's up the stairs, Mammon strikes up a conversation over breakfast, complaining about the fact that he's not allowed to eat MC. MC asks Mammon what's at the top of the stairs, who sighs and says that they are sticking their nose where it doesn't belong. Mammon refuses to tell MC any more about the stairs - until he is accused of being scared of Lucifer.

Finally, he cracks and informs MC of how to distract Lucifer, which requires a vinyl edition copy of the soundtrack from the Tale of the Seven Lords, currently in Leviathan's possession. MC then requests for Mammon to help, and he is forced to oblige. They go straight to Leviathan's room to ask him to lend them the soundtrack.

They are promptly denied entry to Leviathan's room, as he refuses to do them any favors. However, Solomon shows up, and with the aid of an authenticated secret phrase is granted entry to Leviathan's room. When Mammon and MC try to repeat the same secret phrase, they are denied access (even if MC chooses other options). Mammon comes to the conclusion that since Solomon was allowed in for being a Tale of the Seven Lords (TSL for short) nerd, the solution for MC is to become a TSL nerd themself.

Mammon is forced to join MC for the 12-hour TSL Full Series DVD Marathon Night. Beelzebub joins them for the food. Mammon ends up getting surprisingly attached to TSL and its characters, even ending up sobbing over the show. The day after, Mammon quizzes MC on their TSL knowledge. However, Leviathan appeared, claiming that he heard from Lucifer that MC was trying to suck up to him by becoming a TSL nerd. MC then challenges Leviathan to see who the bigger TSL fan was. At first, Leviathan is reluctant but agrees to the challenge after MC provokes him, calling him a chicken.

During the TSL showdown, the questions that MC was given are significantly easier than the questions given to Leviathan. However, after three questions each, they are both tied on points.

MC then pulls out their trump card and spoils Leviathan on the contents of the unreleased TSL Volume 9, and when the credibility of MC's trump card is validated despite Leviathan's protesting, he flies into an envious rage. Assuming his demon form, he gears up to attack MC. Mammon tries to save them, but slips up and is not able to get there in time, allowing Lucifer time to step in and save MC.

Mammon is extremely frustrated that he wasn't the one to save MC, and while tending to their sprained wrist, he states that next time their life is in danger, he would definitely be the one to save them.

When uncovered the mystery of Belphegor and the identity of the person in the attic, MC hears Lucifer and Beelzebub’s discussion about Belphegor and his state in the human world with Beelzebub insisting that Lucifer should forgive their brother. MC discovers Mammon who was also eavesdropping on the two. Mammon states that the brothers were once angels that resided in the Celestial Realm before they fell from grace. Back then, Lucifer loved and was especially fond of Beelzebub, Belphegor, and Lilith however that all changed when they arrived at the Devildom. After pledging loyalty to Diavolo, Lucifer would follow his desires no matter what the cost.

[Please note that this section only has information up to Lesson 5]

Trivia

 * His symbolic animal is a crow, which symbolizes prophecy and good luck.
 * His battle dance stage has a cat. In Japan, cats are seen as good fortune (The Maneki Neko). Cats are also seen as familiars to witches, which is how Mammon is with three witches for he’s constantly summoned by them.
 * Mammon often refers to himself as "Ore-sama" and "Mammon-sama". 'Sama' is a Japanese honorific given to people worthy of the utmost respect, so Ore (crude pronoun for me, I) -sama is, essentially, 'The Great Me'.
 * Mammon likes dried blackbelly newt legs. He also loves fried scorpion sandwiches with vinegar and tartar sauce.
 * Mammon sometimes works as a model, once for a fashion magazine "Devil Style" published by Majolish.
 * His name on Devilgram is "Mammoney".
 * Mammon in Hebrew (ממון) means "money", and in Aramaic (מָמוֹנָא) means "profit, wealth".
 * Mammon shares traits with Jean from The Niflheim, James Moriarty from Guard Me, Sherlock, and Zeus Brundle from Wizardess Heart, for they all have whitish hair, a high-ranking position but often not really taken seriously due to their outlandish behavior, and affectionate toward the MC.
 * The MC having the option to tell Mammon to sit is a possible reference to Inuyasha.
 * Mammon and Satan were the only brothers who's design didn't change in the concept arts.
 * He nicknames his credit card, "Goldie".
 * In the TSL fandom, The Lord of Fools is based on him.
 * He's the only brother who's never unleashed their demonic form when angered.
 * He's also the only brother who still obtains his angelic features; his eyes are similar to Simeon's and Luke's.
 * In the first-ever RAD Newspaper Club chat, Mammon was in 1st place in the unofficial results, but he and Mephistopheles were disqualified due to falsified ballots.
 * In a chat, Mammon says he's a cat person because he likes their aloof pride.
 * Mammon sleeps in the nude and according to a chat, the only thing he wears to bed is Devilish No. 5.
 * A running gag is that Mammon often sets off a curse or hex (either on himself or others around him).
 * His worst subject at RAD is hexes and curses.

From Devilgram stories

 * From Satan's Be You story, Mammon reveals that he's scared of the word "debt".
 * In Listen to Me, it's revealed that Mammon hates the song "Corpse Rock".
 * Beelzebub claims that all Mammon's 6 brothers look down on him in Hatred.