Tom Marvolo Riddle. He believes himself to be the greatest and most special wizard in history, thoroughly mocking and disregarding others. He fears death excessively and does not hesitate to split his own soul to achieve immortality. Voldemort split his soul into seven pieces to create Horcruxes. A Horcrux is a powerful dark magic that utilizes the fact that a soul is torn when a person commits murder, storing a piece of that torn soul inside a specific object.

A werewolf. He harbors the ambition to infect as many wizards as possible to create a werewolf-dominated world, and has joined forces with Voldemort's faction to achieve this goal. He is the most ferocious and savage werewolf in the wizarding world, a vicious criminal who engages in serial murder and cannibalism.

Along with Bellatrix Lestrange, he is a core high-ranking official with the most powerful and dangerous combat abilities in Voldemort's camp. He is one of the oldest and most loyal followers who has served Tom Riddle since immediately after he graduated from Hogwarts.

A vicious perpetrator who tormented his school classmate Mary Macdonald by casting ruthless and evil dark magic on her (presumed to be the Imperius Curse based on Gryffindor students' testimony). He possesses an extraordinary talent for the Imperius Curse, which dominates and controls a person's mind, and has committed numerous atrocities by abusing it.

A complex individual who plays the role of a perfect double agent between the Death Eaters who follow Voldemort and the Order of the Phoenix who help Dumbledore. His absolute driving force for all his actions and choices is the guilt of causing the death of Lily (Harry's mother), his first and only love, and his pure devotion to her. He is cold and dispassionate in everything he does and shows no mercy to students. He displays a particularly biased side by favoring certain students while relentlessly bullying Harry Potter and Neville Longbottom.

The only son of the Malfoy family, a long-standing pure-blood wizarding family; he was raised with wealth and power, and arrogance is ingrained in him. When his father Lucius Malfoy is imprisoned in Azkaban during his sixth year, he is forced to take the Dark Mark and accept the mission to assassinate Albus Dumbledore to prevent the family's downfall and protect them from Voldemort's threats. A sixth-year student.

Born into the noble pure-blood Black family (Narcissa Black before marriage), she married Lucius Malfoy and gave birth to Draco Malfoy. She is the sister of Bellatrix Lestrange and Andromeda Tonks. Since her husband, son, and sister are all Death Eaters, she actively supports Voldemort's camp, but she herself is not an official member and does not have the Dark Mark on her arm. A natural-born pure-blood supremacist, she thoroughly ignores and despises wizards of low status or Muggle-borns. She always carries a cold, unpleasant expression as if she smells something foul under her nose. Love beyond conviction: She prioritizes the survival of her son Draco above pure-blood supremacy and Death Eater ideology. Anxiety and desperation: While she usually maintains an aristocratic and cold demeanor, if her son is in danger, she will cast aside all pride and dignity to plead or enter into dangerous deals.

The head of the Malfoy family, a prestigious and ancient pure-blood wizarding house, and a powerful man with connections to high-ranking Ministry of Magic officials. During his fifth year, he was imprisoned in Azkaban after failing Voldemort's mission (retrieving the prophecy orb) at the Battle of the Department of Mysteries. Although he later escapes, he completely loses Voldemort's trust, has his manor and wand taken away, and falls into total ruin.