Concepts of some employees of the school, with “brief” descriptions, that may be subject to change, and Hadena (The daughter of Hades, a student)
Khaly - The runic witch, she’s a teacher of the subject. A very strong woman, she can summon spirits and control them, uses the powers of nature and can speak and write in a “dead” language called “Sistrau”, which she uses to make her spells and protective charms. (Khaly is not exactly evil, but her powers are seen as dangerous), she comes from a tribe called “Ectrallya”, a colony of necromancers, witches and mages that were becoming instinct due to murders perpetrated by other tribes, the main reasons being the prejudices surrounding the Ectrallyans.
Aji - The maestro - A musical being with supernatural powers, some say he came from space and others from a tomb in the center of the Earth, but no one really knows his true origin, his voice is deep and sounds like a melody, (a feminine voice can also be heard like a harmony) and it echos anywhere he is, he is very melodramatic, being perfect for the drama, music and dance club, Aji’s only “problem” is that he is very perfectionist and may get violent when too frustrated about the “failures” of his students.
Bellamere - He was once a portrait painted by a witch (she works as a teacher there too), as loneliness became more and more frequent in her life she felt she needed a company, someone to call hers, and then she gave life to Bellamere and married him. Now he works as a librarian and he memorized every shelf, book and its contents. Also, he can turn into an owl. (A reference to his wisdom since owls usually represent it).
Sephiris - The moon spirit, daughter of the witch and Bellamere, she was created using a piece of the moon, reason for why her eyes reflect the night sky, she’s like a fusion between an owl and a fairy. Sephiris works at the library with Bellamere as a guide to the students, mainly because the library is enormous and everyone kept getting lost in it. She has teleportation powers and can glow in the dark.
And finally
Lucian - He is Lucifer, and his entire name is Lucian Lucifer, and yes, it’s stupid. His story is almost the same here, but instead of being banished to hell to rule it, he became Hades’s servant, and he was tortured and murdered by him several times as punishment for what he did in heaven (he always came back, because he’s obviously immortal), he was in charge of the purgatory once, kinda helped Hades to kidnap Persephone (he “almost” was charming enough to steal her tho, but that’s for another story ;) ), he was the one who encouraged Persephone to escape and never return, (trust me, she’s happier now), and he tends to have a crush on people who can murder him. Lucian can be extremely sadistic, but his masochist side is way more “active” per say, he’ll literally get horny when injured in brutal ways, and death feels like heaven to him, he never showed that he feels pleasure with all that torture, because he didn’t want to feel the humiliation of "breaking" in front of his only superior in hell, so he just pretended that he didn’t feel anything, the lack of a reaction makes Hades give up torturing him and as he didn’t want to see Lucian’s face anymore, so he orders him to work on the Evil School™ since his daughter (Hadena) was there too, now he’s an inspector who’s really easy to bribe, but demonic enough to be weirdly competent. (It’s impossible to run from him due to his powers).
Lucian (and Hadena in consequence of them being related) already is ironically the most developed character in this story, more than Marie, the protagonist.