Mia

Biodata

Feature	Details
Name	Mia Saru (Mia; 米娅) 173
Gender	Female
Species/Race	Witch; Obscurial 174
Affiliation	Formerly Wool's Orphanage; under Albus Dumbledore's guardianship and Ministry supervision; later cared for by Newt Scamander 174 176 218
Occupation/Role	Unenrolled magical student; descendant of the Sallow family and Salazar Slytherin's bloodline 63 212
Status	Alive; her Obscurus remains dangerous and requires ongoing treatment 198 230
First Appearance	Chapter 2

Background

Mia lived at Wool's Orphanage as a chronically ill and physically frail child. Roy Smee treated her with medicine and became her principal source of comfort; his guilt over leaving his own daughter behind in a previous life made him especially protective of Mia 2 55.

After Roy left for Hogwarts, Mia became lonely and began secretly entering his room. There she discovered the Dark Magic books he had brought from Knockturn Alley, becoming absorbed in the forbidden knowledge they contained 55 63.

A blank book among Roy's belongings revealed Sebastian Sallow, a magically preserved copy of her ancestor's memories. Sebastian identified Mia as a Sallow descendant, told her of the abandoned family estate near Feldcroft and Vault 2026 at Gringotts, and offered to guide her through Slytherin's hidden legacy 63.

Appearance

Mia is a small, frail girl with golden hair and pale blue eyes. Her poor health gives her an unhealthy pallor, and she is often left bruised or exhausted after physical fights and uncontrolled magic 2 147 268.

• Golden hair 2
• Pale blue pupils, which can become black-red during severe Obscurus episodes 147 282
• Thin limbs and a sickly complexion due to her longstanding illness 55 268
• Her clothes were destroyed and her body severely burned during her first battle with Roy's attacks 147

Personality

Mia is intensely attached to Roy and fiercely protective of the people she considers family. She readily accepts Roy's request to look after Harry, later attacking Hermione on the assumption that Hermione was bullying him 84 267.

She is bold, curious, and impulsive. Mia explores dangerous family ruins, uses magic openly when frustrated, and pursues knowledge even when she does not fully understand its consequences 184 187. Her childhood innocence remains evident in her love of snacks, ice cream, attention, and practical magic such as cleaning spells 84 183 200.

Her experiences with abandonment, illness, Dark Magic, and the Obscurus have also made her suspicious and morally unstable. She is capable of manipulation—frequently invoking her illness to gain sympathy—and may resort to Unforgivable Curses when frightened or angry 173 215 268 281. When the Obscurus overwhelms her, much of her judgment and restraint disappear entirely 282.

Abilities & Skills

Obscurus

Mia contains an Obscurus: a mass of Dark Magic bound to her life force. Emotional distress can trigger black mist to leak from her body or erupt into a destructive transformation 173 174.

• Generates dense black mist capable of lifting rubble, striking targets, and tearing apart structures 147 282
• Rapidly regenerates after being damaged, allowing the mist to refill gaps in its defenses 147
• Can manifest corrosive Dark Magic whirlwinds that reshape the battlefield and interfere with victims' minds 282
• Evolved to drain and consume other people's life force during her rampage in Godric's Hollow 282
• Its power erodes her mind and worsens her instability when she draws upon it 151 282
• Cannot be removed all at once without killing Mia, as part of her life force is bound to it 190 198

Wandless Magic

Mia displayed instinctive magical talent before receiving formal education.

• Manipulated and crushed a mouse with invisible force while experimenting with magic 63
• Produced a small wandless Fiendfyre flame at only ten years old 63
• Cast Scourgify without a wand to clean Hermione Granger's stained dress 184
• Her unauthorized use of magic outside school risks Ministry consequences 184

Dark Magic

Sebastian trained Mia through his Memory Book, initially giving her access primarily to destructive and forbidden spells 84 145.

• Successfully produced a weak, poorly aimed Crucio during early training; she could not initially cast Avada Kedavra 84
• Learned Unforgivable Curses including Crucio, Imperio, and Avada Kedavra 84 268 281
• Uses additional Dark spells such as Flesh Separation, Blood Boiling, and Blood Decay during combat 282
• Her attempt to cast Imperio through a damaged wand backfired, knocking both herself and Harry unconscious 268
• Dumbledore restricted Sebastian from teaching her further Dark Magic and added safeguards to the Memory Book 174 177

Transfiguration

Mia possesses exceptional natural aptitude for Transfiguration despite her limited education.

• Solved McGonagall's Transfiguration puzzle exercises in under an hour 213
• Transfigured a triangular pyramid into a cube during private instruction 213
• Reached roughly first-year Hogwarts academic level through one-on-one lessons with McGonagall and Snape 218

Potions

Mia sought Potions lessons from Severus Snape before she was eligible to enroll at Hogwarts.

• Used her Obscurial condition and orphanhood to persuade Snape to admit her into his office 215
• Received treatment Potions brewed by Snape during her hospitalization 215
• Continued studying Potions privately under Snape before the school term began 218

Equipment & Items

• Sebastian's Memory Book / Book of the Nameless — A book containing Sebastian Sallow's preserved memories and mindscape. It revealed Mia's heritage and initially served as her Dark Magic training source 63 174.
  • Roy's Ancient Magical Power disrupted the book, preventing Sebastian from bringing Mia into its mindscape for a time 177.
  • Dumbledore added a memory of himself and an anti-Dark-Magic “anti-addiction” safeguard to it 174 177.
• Heart of Africa — An enormous magical diamond inherited through the Sallow family. It purifies Dark Magic but causes Mia extreme pain because it also reacts with her Obscurus 187 188 189.
• Dumbledore Caller — A golden pendant that Mia uses as a means of summoning Dumbledore for protection 183.
• Wand — Her battered wand's exposed core malfunctioned during an attempted Imperio, releasing uncontrolled purple magic 268.
• Hormone Gun — A medical device provided by Roy that Mia uses on herself after being injured or weakened 189.

Relationships

• Roy Smee — Mia's guardian-like older brother and closest attachment. He treated her illness, built a home for them in Godric's Hollow, and repeatedly risks himself to protect her; Mia chooses to stay with him over the comfort of Hogwarts 2 147 176 177.
• Sebastian Sallow — Her ancestor's magical memory copy and first magical mentor. He revealed her Sallow heritage and taught her Dark Magic, though Dumbledore later restricted his instruction 63 174 177.
• Albus Dumbledore — Mia's legal guardian and a cautious mentor. He arranged reduced Ministry examinations, protects her from execution or confinement, and maintains a private pact not to reveal Sebastian's existence to Roy 174 176.
• Newt Scamander — Mia's caretaker and a specialist in Obscurials. He develops a gradual treatment plan intended to cleanse her Obscurus without taking her life 198 218.
• Tina Goldstein — A warm caregiver at the Scamander household who looks after Mia and sees her off when she visits her friends 267.
• Harry Potter — Mia's close friend and someone she regards as her responsibility after Roy asks her to watch over him. Her efforts to protect Harry are sincere but can become dangerously extreme 84 173 267 268.
• Ron Weasley — A friend and frequent companion on Mia's outings and explorations, including the search of the Sallow family home 183 184 187.
• Hermione Granger — Initially fought Mia after a misunderstanding involving Harry. Their hostility softens after Mia apologizes and gives Hermione a wand-like magical aid, which Hermione treasures as a sign of friendship 268 270 280.
• Minerva McGonagall — A protective teacher who nurtures Mia's Transfiguration talent while warning her not to take pride in bloodline supremacy 212 213.
• Severus Snape — Mia's reluctant Potions instructor and medical supporter. Though easily irritated by her persistence, he takes an interest in her potential and circumstances 215 218.
• Aisling Grindelwald — A wealthy acquaintance of Roy's who treats Mia warmly. Mia is suspicious and jealous when she fears Aisling may take Roy's attention away from her 174 178.

Story Role

Wool's Orphanage and Dark Magic Discovery

Mia begins as a sickly orphan who fears Roy has forgotten her after leaving for Hogwarts. Roy's letter, money, and raven restore her spirits, but her exploration of his possessions leads her to Dark Magic books and Sebastian's Memory Book 55 63.

First Obscurus Outbreak

While studying Horcruxes and arguing with Roy, Mia suffers a catastrophic Obscurus eruption that destroys the orphanage activity room. Roy subdues her without killing her, but she is hospitalized at St. Mungo's after the battle 145 147 173.

Second Chance and New Home

Dumbledore becomes Mia's legal guardian, the Ministry erases the orphanage children's memories of her and Roy, and Mia moves with Roy to Godric's Hollow. Roy completes a cabin for them and tells her that she finally has a home 174 176 177.

Sallow Legacy and Treatment

Mia investigates the abandoned Sallow home with Harry and Ron, finding the Heart of Africa in a hidden locked box. The gem's purification power proves both hopeful and dangerous, prompting Newt to devise a slow “dialysis” treatment for her Obscurus 187 188 198.

Hogwarts Protection

While temporarily staying at Hogwarts, Mia learns about her possible status as the last surviving Slytherin bloodline, receives private lessons, and becomes beloved by several professors. She remains unable to enroll until she can safely control her Obscurus 212 213 218.

Godric's Hollow Rampage

When masked attackers target Mia, she answers with overwhelming Dark Magic and loses control of the Obscurus. During the rampage, she devastates much of Godric's Hollow and drains an attacker's life force, revealing that her Obscurus has evolved into an even greater threat 281 282.

Notable Quotes

“Mission guaranteed, sir!” 84

“I want to live with Roy!” 176

“You have a home now.” 177

Trivia

• Mia initially considered a Cleaning Charm more useful than lethal curses because she wanted help tidying her room 84.
• She regularly ordered Tom the unusually intelligent cat to fetch drinks, serve tea, and take out rubbish 84.
• The narration foreshadows that Mia may one day become the “Third Dark Witch Queen” after her first encounter with Roy's Dark Magic books 55.