Satan

"All smiles are nothing but an act. The cynical fourth-born."

"'Usually very rational and frank, but once you anger him you better run for your life. He hates Lucifer and is going through a rebellious phase.'"

Satan is the Avatar of Wrath and is the 4th oldest and physically the youngest among the seven demon brothers. 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
Satan has layered blonde hair and cyan blue eyes with a yellow-green gradient. Like all of the demon brothers, he wears nail polish, his in the color green.

Personality
Although he is the Avatar of Wrath, Satan conducts himself in a composed manner. He's sensible, quick-witted, and usually the voice of reason between the brothers until he comes into conflict with Lucifer. Born from Lucifer’s wrath, this bond and influence were undesirable for Satan. This fueled his hate and rebellious attitude towards Lucifer so much that he is willing to go out of his way just to oppose the latter. When truly angered, Satan can appear harsh and unforgiving.

Satan has a love for knowledge, evident from the overflowing book collection spanning across various topics, and an appreciation of the fine arts. This may be, in part, related to his belief that knowledge can bring respect. Moreover, he is rather fond of animals, advocating for their well-being and indulging them with toys (his favorite animal is cats). He also loves dramas of all kinds, especially detective ones. As he is a fan of them, he's also shown great skill in analyzing the situation. His skills are comparable to that of a detective's and his deductions are usually never wrong. Though he claims to be an introvert, he actually is very good at meeting new people and building connections with them, as seen in his Devilgram story Why Do People Love Cats.

In Lessons 9 to 11, Satan eventually softens up to Lucifer after a series of events and is entrusted to deliver a speech on Lucifer’s behalf. Their relationship improved thereafter and is shown to be caring and supportive, though he still tries to prank Lucifer. When Lucifer collapsed and lost his memory, he became concerned for his well-being but denied it when MC brought it to attention.

Background
After the Great Celestial War, Satan was was "born" after Lucifer torn off his own wings, a result of his anger towards his Father1. He retained all of Lucifer's memories and feelings, however, was nothing but the emotion of wrath. Shortly after his birth, the Demon King placed him as the fourth oldest based on his power, despite being physically the youngest. Despite the circumstances, the brothers had raised him and taught him things, and Lucifer had the most influence on him, though not in a good way.

Main Story Normal
He's first ignored when Lucifer started the introductions on his brothers. When introduced, Lucifer implies that looks can be deceiving and that Satan may seem like a responsible demon however only at first glance. He continues that Satan may give a smile such as that but warned MC to be careful for it is all an act.

Before the fuss about Mammon having made into a pact with MC, he along with the other demon brothers are playing cards with Solomon winning. After a round, he asks Asmodeus and Satan on why they always put down Mammon and that shouldn’t they be a bit more respectful since he was their older brother. With that being said, Satan ignores what he's saying and gives the news, that MC's able to make a pact with Mammon, which later goes to Asmodeus asking why making a pact is such a big deal while putting example of his pact with Solomon.

[Missing details on Lesson 3, please add!]

[Please note that this section is incomplete and has little information for the time being]

Trivia

 * His symbolic animal is a unicorn, which symbolizes strength and fierceness.
 * Satan has never managed to beat Lord Diavolo at chess
 * Satan was likely designed to be the complete opposite of Lucifer in a visual sense: He has blond hair and greenish eyes, while Lucifer has black hair and reddish eyes; his casual outfit is more colorful and casual, while Lucifer's outfit is more dark and formal; he doesn't wear gloves while Lucifer does. But his mannerisms are still similar to Lucifer's, such as his pose which is the same but mirrored, and his RAD uniform is neat and orderly.
 * He's the only brother who wasn't originally an angel; this is because he was born after Lucifer fell into Devildom.
 * His name on Devilgram is "stn".
 * In the TSL fandom, the Lord of Masks is based on him.
 * In the series he and the Lord of Shadows were on good terms until something happens in the unreleased volume.
 * His dance battle stage has a wolf. Wolves were often symbolized as devils in Christianity as they would hunt the sheep, which symbolized Christians. The phrase "wolf in sheep's clothing" perfectly describes him.
 * One of his favorite shows is "The Mid-Fall Murders", which is a television show from the Guard Me, Sherlock game.
 * This is probably a reference to the real-life television series, Midsomer Murders.
 * In a chat, he states that he wears pajamas to bed.
 * Satan was easily seduced by MC when they meowed cutely.
 * Satan's horns looks somewhat like an upside down version of Lucifer's.
 * A running gag is when he tries to diffuse a situation (generally caused my Mammon), he'll get hit with something which unleashes his wrath and further escalate things.
 * In Mysterious Phenomena it is revealed that he once rescued a kitten while on a trip to the Human World.