Snape

Biodata

Feature	Value
Name	Severus Snape (斯内普)
Alias(es)	Professor Snape; Half-Blood Prince
Gender	Male
Affiliation	Hogwarts School of Witchcraft and Wizardry; Slytherin House; Extraordinary Potions Guild
Occupation/Role	Potions Master; Hogwarts Potions professor; Head of Slytherin House; Devero Alexander's master and mentor
First Appearance	Chapter 1

Background / History

Snape was already Devero Alexander's Potions master before Devero entered Hogwarts. Their early apprenticeship was marked by harsh chores, reprimands, and Devero's fear of Snape's temper, although Snape also ensured that Devero ate before their Diagon Alley shopping trip. 1

He is identified as one of Hogwarts' youngest professors and possesses an exceptional spell library and traits of purple rank or higher. Devero specifically identifies Snape's Potion Prodigy, Magical Talent, and Atoner traits. 2

At Hogwarts, Snape serves as Potions professor and Head of Slytherin. He becomes increasingly invested in Devero's development after discovering his apprentice's ability to brew and improve advanced potions, eventually giving him regular assignments, laboratory access, ingredients, exemption from homework, and access to the Restricted Section. 10 22 48 52

Snape submits Devero's Transfiguration-potion proposal to the Extraordinary Potions Guild, explicitly crediting the core idea to his student rather than claiming it as his own. 50 He later presents Devero's automated potion-brewing work to Hector Dagworth-Granger with evident pride. 123

Appearance

Snape is a tall, thin, pale man who almost invariably wears black robes. His greasy, disheveled black hair hangs over his forehead and cheeks, leaving him seemingly perpetually shadowed. 1

• Pale, paper-white complexion. 23
• Long, greasy black hair that partially conceals his face. 1
• Sharp, cold eyes frequently compared to those of a serpent or hawk. 9 194
• Carries a birch wand. 2

Personality

Snape is stern, suspicious, and habitually cutting in speech. He reacts aggressively to claims he considers implausible, such as Devero's assertion that he can learn spells by watching them cast. 22 His classroom manner is similarly severe, deducting points and intimidating students who disrupt Potions lessons. 46

Beneath this hostility, Snape shows a practical commitment to cultivating talent. He recognizes Devero's potion innovations, shields him from expulsion over the train incident, and provides resources intended to help him avoid mistakes in potion-making. 22 50 52 He is willing to seek Devero's help with Transfiguration magic when it is needed for automated brewing. 130

His mentorship is deliberately unforgiving. During combat instruction, he attacks Devero without warning to teach that real enemies do not respect dueling etiquette. 73 Even so, he reacts with anger when Devero recklessly risks his life, demanding to know whether Devero expects him to collect his corpse. 218

Abilities & Skills

Potioneering

Snape is a recognized Potions Master and former youngest Potions professor at Hogwarts. His Potion Prodigy trait is described as superior to Devero's Potion Perception. 2 121

• Maintains a large storage room containing magical-creature remains, herbs, precious potions, and specialized ingredients. 48
• Develops and refines potion research, including Transfiguration-potion proposals and Wolfsbane Potion work. 50 107
• Supervises Devero's advanced Polyjuice Potion brewing and critiques his lack of rigor. 122
• Is sufficiently respected in the field to be sought after by the Extraordinary Potions Guild. 50

Spellcasting and Duelling

Snape has a vast spell library and is a highly dangerous practical duelist. 2 74

• Casts the Levitation Charm non-verbally. 2
• Uses Apparition to transport himself and Devero. 11
• Employs advanced combat magic, including Confringo, Stupefy, Expelliarmus, and the Full Body-Bind Curse. 74 75 89
• Uses wandless magic to defeat Devero and later disarm Peter Pettigrew. 75 203
• Detects flaws in Devero's Disillusionment Charm, even when Devero uses a substitute to mislead him. 74
• Teaches combat through live, unpredictable engagements rather than formal etiquette alone. 73

Legilimency

Snape can use Legilimency discreetly to probe another person's mind. 260

• Attempts to read the Leaky Cauldron bartender's mind after finding it unnaturally blank. 260
• Recognizes that the bartender's resistance exceeds ordinary Occlumency and treats the situation as a threat. 260

Atoner

Snape possesses the purple Atoner trait, described as a burden of sin that grants extraordinary willpower and strengthens certain spell effects. 2

Equipment / Resources

• Birch wand — used for non-verbal charms, combat magic, and Apparition. 2 11
• Potions laboratory — a rigorous, specialized workspace used for teaching, research, and advanced brewing. 122
• Storage room — contains ingredients, creature remains, herbs, potions, and other valuable brewing materials. 48
• Veritaserum — recently used in interrogations of Dark wizards. 125
• Combat-training hall — a former anti-Dark-wizard training space equipped with weapons, protective equipment, rune-inscribed robes, and magical reinforcement. 73

Relationships

• Devero Alexander — apprentice and later protégée-like student. Snape begins as an intimidating, harsh master but comes to recognize Devero as an extraordinary Potion Prodigy; their dynamic gradually becomes one of mutual professional respect. 1 10 50 130
• Albus Dumbledore — Hogwarts headmaster and associate. Snape discusses Harry, prophecy, Devero's safety, and the return of hostile forces with Dumbledore. 23 62 211
• Minerva McGonagall — fellow Hogwarts professor. McGonagall remains distrustful of Snape during the Basilisk crisis, while Dumbledore publicly identifies Snape as an ally. 211
• Hector Dagworth-Granger — founder of the Extraordinary Potions Guild. Snape treats Granger with deference and discusses Devero's potion research with him. 50 122 123
• Peter Pettigrew / Wormtail — reluctant ally during Voldemort's return. Snape openly despises Pettigrew's cowardice and carelessness; Pettigrew later betrays and attacks him. 194 203
• Voldemort — former master or feared authority figure. Snape reacts with visible terror when Voldemort contacts him, yet later questions his own loyalty after witnessing Dumbledore's power. 178 202
• Tom — Leaky Cauldron proprietor with a long and hostile history with Snape. Tom summons Snape to discuss Annabelle Alexander's death. 260

Story Role / Major Arcs

Devero's Apprenticeship and Hogwarts Entry

Snape accompanies Devero through Diagon Alley, tests his potion knowledge, and discovers that his formerly timid apprentice has changed dramatically. 1 3 After Devero produces a high-quality Polyjuice Potion, Snape recognizes his extraordinary potential and brings him to the Hogwarts Express. 10

Patron and Mentor

Snape orders Devero to report every Friday, investigates his unusual magical knowledge, and ultimately prevents his expulsion under the Polyjuice Potion agreement. 22 As Devero's abilities become undeniable, Snape grants privileges and resources normally unavailable to a first-year student. 48 52

Potion Research and Professional Recognition

Snape takes Devero's Transfiguration-potion proposal to the Extraordinary Potions Guild and credits Devero as its originator. 50 He later works with Devero on Wolfsbane Potion research, automated brewing, and shelf-life improvements, even asking his student for technical guidance. 107 123 130

Combat Training

Snape trains Devero in an old combat hall, dismissing ceremonial rules in favor of survival. 73 Their ensuing duels reveal Snape's advanced spellcasting, tactical awareness, and wandless magic; Devero learns from the experience but is ultimately defeated. 74 75

Voldemort's Return and Divided Loyalties

Voldemort contacts Snape directly and invokes Snape's loyalty, placing him under renewed pressure. 178 Snape later assists in the ritual surrounding Voldemort's rebirth, clashes with Pettigrew, and begins to confront the uncertainty of his own allegiance. 194 202 203

Disappearance at the Leaky Cauldron

While arranging rooms at the Leaky Cauldron, Snape is diverted by a message concerning Alexander. He becomes suspicious of the pub's staff and foreign clientele, then meets Tom in a private room to discuss Annabelle Alexander's death. 259 260 His prolonged absence, together with Tom's disappearance, later alarms Devero. 271