Sebek's mother is a nocturnal fae and his father is a magic-less human. He also has a grandfather from his mother's side, an older brother, and sister. While his parents were busy, a young Sebek would either spend time with his siblings or run off to visit his grandpa.” + “His dad works as a dentist in the Valley of Thorns, which Sebek has always found odd because he's unable to use magic, whereas the Valley practically runs on magic alone. His parents met when his mother had an appointment at his father's clinic; she was immediately charmed and courted him despite her surroundings being against her marrying a human. Currently, she works at the clinic as his assistant. Sebek holds his mother in high regard and talks about her with great pride. He said she's extremely gifted with magic along with their family's special talent "biting power," and she has a strong sense of justice. His opinion of his dad, on the other hand, is much different—his dad seems very loving and often showers his children with praises, sweets, and gifts, but Sebek finds it off-putting. He doesn’t understand how his mother saw any appeal in him. Sebek has trained under Lilia from a young age, and he has a lot of respect for him. Through his whole childhood, he’s respected and idolized Malleus, almost to the point of obsession. The reason he decided to go to Night Raven is because of him. He feels a great need to impress him and one day be equal to him. He got lost his first day, but built a bond with Jamil Viper from Scarabia over being guards for people. “He is good at science and math, as they are concrete and easy to understand. However, he has difficulties with subjective classes like the arts. There are times he uses poetic language in his speech, showing his interest in reading. He was a late bloomer with magic. He likes warm and humid places like the school's botanical garden, as he finds them relaxing. Horses always get scared of him for some reason. According to Grim, a cat student at Night Raven, whenever Malleus is brought up he gets really exhausting. He is jealous of Kalim and Jamil‘s master-servant relationship and that they have known each other since birth. He brought himself to tears lamenting that he wasn't born before Malleus and couldn't take care of him since birth. He is usually in charge of the heavy lifting in Diasomnia; He can carry 8 chairs at once with ease. He has a portrait of Malleus in his room, which he greets every single time he leaves or comes back. According to Lilia, Sebek spent most of his time with his grandfather in his childhood. Lilia also commented on his temper, a trait Sebek inherited from Baul. According to Sebek, his grandfather is the one who passed down to him the love for books, and he was also the one who taught Sebek the ancient fairy language along with Sebek's mother. Sebek is part of a group that idolizes Malleus called "Draconian”. His best subject is Magical Analysis.