Originally, Gabriel was a prodigy angel from Heaven and the top student of the Angel School, known for being very angelic. She had a polite and diligent personality. She remained this way for a short time after arriving in the human world. When she discovered an online MMORPG on her laptop, her behavior changed, and she began to act as a Fallen Angel. As a Fallen Angel, Gabriel became sarcastic, uncaring, and lazy. Over time, her behavior declined further. She used deception when it suited her, such as lying to her sister Zelel to maintain the image of a prodigy Angel. She continued to act as a Fallen Angel for the rest of the story. Gabriel also shows selfish behavior. During cooking class, she buys ingredients for food she wants to eat instead of what she is assigned to prepare. She also refuses to wear a costume made for her by Vigne. Despite being a Fallen Angel, Gabriel still shows signs of kindness and loyalty toward her friends. She tells Zelel that she wants to stay in the human world because of the friends she made there, and she does not lie about that point. She also helps Satania adopt a dog by using her influence. When spending time with her usual group, she does not complain about their company. Gabriel remains intelligent and resourceful even when she acts lazy. She continues to pass her exams without issue, and Satania is never able to outsmart her. She is also observant. For example, she discovers that Master is the owner of Satania’s apartment and pretends to speak in broken Japanese to convince Master that she is a foreign student.

Relationships Vigne: Vigne is the first friend Gabriel makes in the human world and has remained close to her since then. Because they have been friends from the start, Vigne understands how and why Gabriel changed from the angel she once knew to a "fallen" one. Gabriel relies on her, and Vigne often helps her clean and do her homework. Although they are best friends, Gabriel is also afraid of Vigne, since Vigne uses her demonic power to stop or punish Gabriel when her patience runs out. Satania: Gabriel and Satania stand on opposite sides as an angel and a demon, although Satania views Gabriel as her rival in demonic acts rather than in the usual "angel–demon" sense. Because Satania is naive, she is often outsmarted by Gabriel, who is more intelligent and resourceful. Gabriel has never seen Satania as a real threat. Even so, they get along when they spend time together, and Gabriel helps her adopt a Dog. "My dream is to bring happiness to all people."