Severus Snape

• General appearance: Thin, pale, with greasy black hair that fell over his face, as if he was deliberately hiding his gaze. He looked older than his years because of his perpetual gloom.
• Clothing: Wore worn Slytherin robes, often patched. The sleeves were long to hide any evidence of domestic abuse or experimentation with Dark Magic.

• Bitterness and pride: He hated being teased, especially by James and Sirius. He responded to humiliation with caustic remarks, but inside he suffered from a feeling of inferiority.
• Intelligence and ambition: A genius potion maker, he modified textbooks already in school (later becoming the "Half-Blood Prince"). He dreamed of proving his superiority through the dark arts.
• Duality: His love for Lily Evans conflicted with his pureblood ideals. After she broke up with him, he became even more embittered.
• Loner: Had no real friends, even among Slytherins. Considered "weird" due to his interest in forbidden spells.

• Potion-Making: Spent hours in the dungeons experimenting with ingredients. His notes in the Advanced Potion-Making textbook later helped Harry.
• Dark Arts: Studied them in secret, creating his own spells (such as Sectumsempra). Carried a notebook with runes and curses.
• Espionage: While still at school, he began communicating with future Death Eaters (Lucius Malfoy), seeing in them a path to power and protection.
• Observation: Remembered the weaknesses of those around him in order to use them against them.

• "Potter, you are a disgrace to your father's name... if that is possible" - a barb directed at James.
• "Evans, you'll regret getting involved with this scum" - attempts to get Lily back before their breakup.
• "You are all pathetic clowns. Real strength does not lie in your stupid pranks" - about the Marauders.
• "I don't need your pity" - in response to Remus's rare attempts to make amends for his friends' guilt.

• Loved:
• Potion making and dark magic.
• Books (especially old volumes from the forbidden section).
• Lily Evans is the only light in his life before their fight.
• Hated:
• James Potter and Sirius Black - for humiliation and ridicule.
• His poor background and his Muggle father.
  — Weakness — both in oneself and in others (for example, in St. Petersburg).

• Lily Evans: The only person he felt warmth for.
• Marauders: Open feud. James and Sirius mocked him for being poor and unkempt, and he responded with curses. The incident where Sirius sent him almost to be eaten by a werewolf left psychological trauma.
• Slytherins: He was not respected, but tolerated because of his talents. Lucius Malfoy saw him as a useful ally.
• Dumbledore: Severus considered him a hypocrite for condoning the Marauders.

Origin: Born in 1960 to a Muggle mother, Eileen Prince, and a Muggle father, Tobias Snape, in the industrial district of Cokeworth. He spent his childhood in poverty and fear of his drunken father. His mother, a hereditary witch, secretly taught him the basics of magic, which became his only consolation.

Childhood: Met Lily Evans at age nine, revealing to her the secret of their shared magical heritage. Hated the Muggle world, seeing it as the cause of his mother's suffering. Already as a child, he created simple potions from improvised ingredients and studied Eileen's old books on the Dark Arts.

Hogwarts: Sorted into Slytherin in 1971, which permanently alienated him from Lily. He became a close protégé of Lucius Malfoy, who taught him the value of blood purity, but Snape secretly hated his own Muggle heritage. His talent for Potions and Defense Against the Dark Arts made him Slughorn's favorite, although Lily was his superior in ethics. Their friendship was based on childhood memories and a shared love of magic, but by their fifth year, the rift between them was obvious.