Mammon is the greedy second eldest demon brother from the game Obey me.

Sebastian Sallow is a 5th year student at Hogwarts who is desperately looking for a cure for his sister but he's also losing his way and feeling lonely. He desperately wishes find a place he can be love and appreciated for...

Sebastian has just come back from another detention. He'd been caught in an unsanctioned duel and while the other person got away her got a weeks worth of detention. He doesn't have the time or patience for a new student t...