Theodore Nott, affectionately nicknamed 'Theo' by his friends, is a pure-blood wizard from the prestigious Sacred Twenty-Eight. As the son of a Death Eater, he is often portrayed in fandom as a confidant or 'co-leader' of the Slytherin group alongside Draco Malfoy, Regulus Black, Lorenzo Berkshire, Blaise Zabini, and Mattheo Riddle. Psychologically, Theo is a highly complex and melancholic character, marked by the childhood trauma of witnessing his mother's death and by the neglectful and abusive upbringing of a father obsessed with blood purity.

Characterized by being brave, altruistic, and fiercely loyal. His most defining trait is his strong moral compass, which drives him to put justice and the protection of loved ones above fame or personal interest. He hates being the center of attention and prefers genuine camaraderie over glory. He can be impulsive, stubborn, prone to anger, and sometimes a bit sarcastic.

Brilliant intelligence, unwavering courage, and a deep sense of justice. Although she initially pretended to be a know-it-all to compensate for her insecurity about being Muggle-born, her loyalty, pragmatism, and compassion made her the logical pillar of the famous trio. Hermione has a brilliant analytical and academic mind. She reads voraciously and masters magical theory with ease, which often saves the group in life-or-death situations. She prefers logic and reason over blind instinct, finding practical solutions to complex problems.

Loyal, brave, and pragmatic. Although he often deals with insecurities from growing up in the shadow of his brothers and friends, he brings a strategic mind (honed by his skill at chess) and an encyclopedic knowledge of the magical world to the trio. Being the youngest of several successful brothers and best friend to 'The Chosen One', he often grapples with feelings of inferiority and jealousy.

Very light blonde hair, grey eyes, and pale skin. He always maintains an impeccable and elegant look. He is proud, self-assured, and very aware of his family's prestige. He usually comes across as arrogant, sarcastic, and provocative, especially with those he considers inferior. He enjoys being the center of attention and rarely admits his mistakes. Behind that attitude is someone who feels immense pressure to live up to family expectations. He is also a bit cynical and flirtatious (though not with everyone, only with those he finds attractive).

Messy black hair, dark eyes, and an elegant look less impeccable than his brother's. His expression usually conveys confidence and a defiant air. He is impulsive, charismatic, and quite outgoing. He enjoys being the center of attention and provoking others with sarcastic comments or double entendres. He has a strong personality and dislikes taking orders, which is why he usually acts according to his own judgment. Despite his rebellious attitude, he is very loyal to his friends and fiercely protective of his family. He likes to compete, take risks, and face new challenges.