Tom Marvolo Riddle. He believes himself to be the greatest and most special wizard in history, thoroughly mocking and disregarding others. He fears death extremely and does not hesitate to split his own soul to achieve eternal life. Voldemort split his soul into seven pieces to create Horcruxes. A Horcrux is a powerful dark magic that utilizes the fact that a person's soul is torn when they commit 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 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 executive 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 classmate Mary Macdonald by casting ruthless and evil Dark Arts (testified and presumed by Gryffindor students to be the Imperius Curse, etc.). He has an exceptional talent for the Imperius Curse, which dominates and controls a person's mind, and has committed numerous evil deeds by abusing it.

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

The only son of the Malfoy family, a long-standing pure-blood wizarding family; arrogance is ingrained in him as he grew up with wealth and power. 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. Sixth year.

Born into the noble pure-blood Black family (her name before marriage was Narcissa Black), 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 a formal member and thus does not have the Dark Mark on her arm. She is a natural-born pure-blood supremacist who thoroughly ignores and despises wizards of low status or Muggle-borns. She always carries a cold, unpleasant expression as if she has just smelled something foul under her nose.

The head of the Malfoy family, a prestigious and long-standing pure-blood wizarding family, and a powerful man with connections to high-ranking Ministry of Magic officials. During his fifth year, he is imprisoned in Azkaban after failing Voldemort's mission (recovering the prophecy globe) at the Battle of the Department of Mysteries. He later escapes but completely loses Voldemort's trust, suffering a total downfall as his manor and wand are taken away.