Matthew

Biodata

Feature	Details
Name	Matthew Black (马修) 1
Alias(es)	Gehrman; the “New King of Slytherin” (an unwanted reputation) 6 7
Species/Race	Human; half-blood wizard 18
Gender	Male 1
Age	14, as of August 1991 1
Affiliation	Hogwarts School of Witchcraft and Wizardry — Slytherin House; Court Wizards of Whitestone Town 1 30
Occupation/Role	Hogwarts third-year student; Temporary Investigator; Slytherin Quidditch Beater 1 30 43
Status	Alive 49
First Appearance	Chapter 1, “Transmigrate Again” 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Level 1 Wizard Apprentice	11	Constructed four Runic Models through the Aemon Basic Meditation Method, gaining access to the Runic Magic cultivation system. 11
Level 2 Wizard Apprentice	21	Reached 128 Runic Models and broke through with Blue Water Flower Juice; his Sea of Consciousness expanded to 1.5 times its former size and his total magic power rose by 20%. 21
Level 3 Wizard Apprentice	49	Broke through using Potent Vitality Potion and first-rank Dragon Scale Incense; his Sea of Consciousness doubled in size and total magic power increased by 30%, reaching nearly twice Link Watson’s magical power despite sharing the same rank. 49

Background / History

Matthew is a transmigrator who retained the memories of an ordinary previous life after dying in an accident. Although he had only watched parts of the original films, those memories gave him partial foreknowledge of major events surrounding Hogwarts and Voldemort. 1 7

In his current life, Matthew was raised after the deaths of his parents: an Auror father and a Muggle mother, both killed by Death Eaters. Their killer was his aunt, Bellatrix Lestrange. His early magical education instead came through the portrait of his late grandfather, Alfat Black, a noted Ancient Runes scholar. 4

As a half-blood Slytherin, Matthew endured extortion, isolation, and other bullying from students tied to pure-blood supremacist families. His advanced spellcasting let him retaliate effectively, protect other bullied half-bloods, and become a prominent—if controversial—figure within Slytherin. 5 18

During the summer before his third year, Preserved Egg uncovered an ancient metal disc set with a red crystal. The disc transported Matthew to a snowy other world populated by Runic Magic, wizard apprentices, and magical creatures. There, he saved Chris Watson and Tina, received a notebook containing the Lightning Bolt spell, and discovered the Aemon Basic Meditation Method. 1 2 4 10

Matthew subsequently entered Whitestone Town’s wizarding society, cultivated Runic Magic, joined the Court Wizards as a Temporary Investigator, and assisted Link Watson and Anna in the missing-persons investigation. His inquiries ultimately led to Old White’s mutation, Jack White’s involvement, and the discovery of ritual-related materials and magical resources. 30 36 39

At Hogwarts, Matthew sought Merlin’s portrait to understand the lost Meditation Method. Merlin sent him to 1943 as a trial, where Matthew killed the thousand-year Basilisk in the Chamber of Secrets while avoiding major disruption to the timeline. 22 23 25 26

Appearance

Matthew is a neatly dressed, handsome black-haired youth with natural curls. At fourteen, he is already physically and magically composed enough to be mistaken for an older and highly capable wizard. 1 12

• Black hair with natural curls. 1
• Keeps a clean, orderly appearance and commonly alters his clothes through Transfiguration. 1 5
• Can disguise himself as a gaunt, sinister-looking red-haired man through the Dark Green Potion. 5
• Resembles his grandfather Alfat Black as a young man closely enough to fool 1943-era Dumbledore. 26

Personality

Matthew is calm, observant, and highly pragmatic. He responds quickly to threats, conceals abilities that could expose his otherworldly origins, and treats combat as a problem to be solved efficiently. After rescuing Mundungus Fletcher from six attackers, he charged Mundungus one hundred Galleons for his assistance. 6 12 32

He is also considerate toward people he accepts as allies. He protects Chris and Tina, reassures Hermione and Neville, teaches Neville a familiar-summoning spell, and helps younger Slytherins targeted for their blood status. 3 8 18 20

Matthew’s drive for power stems from insecurity after his parents’ deaths and from witnessing Muggle refugees affected by war. He believes strength is necessary to preserve peace and intends to gain enough power that he cannot be helpless when Voldemort and the Death Eaters return. 15 47

His ambition is increasingly evident. The Mirror of Erised shows him portrayed across a peaceful moonlit London street, an image that surprises him with its mixture of public influence and authority. 46

Abilities & Skills

Hogwarts Spellcasting

Matthew’s casting ability surpassed that of some adult wizards before he began Runic Magic cultivation. He is proficient with offensive, defensive, transfiguration, and silent-casting techniques. 1 5

• Uses Shield Charms, Levitation Charms, Transfiguration, Restoration, Legilimency, and other standard spells in rapid succession. 2 6 12
• Can simulate Dumbledore’s “Fire God Opens the Way” through Blazing Flames and Fire Control Magic, though his version is substantially weaker and cannot control Fiendfyre. 1
• Uses the Killing Curse in lethal encounters, but it was ineffective against the thousand-year Basilisk’s resistance. 3 6 25
• Developed a gliding technique by applying Levitation Charms to his cloak and shoes. 25

Runic Magic and Meditation

Matthew practices the Aemon Basic Meditation Method, a lost system that develops the Sea of Consciousness and allows pre-constructed Runic Models to accelerate Runic Magic. 10 11 22

• Uses Runic Models to condense and guide runes far faster than ordinary manual casting. 12 13
• Casts Lightning Bolt, a spell capable of boring through a tree trunk; after meditation training, its power increased by 20%. 4 13
• Uses Blue Water Flower Juice, Spirit Nourishing Potions, Mandrake Revitalizing Potions, Potent Vitality Potion, and Dragon Scale Incense to accelerate cultivation and recover mental power. 11 21 49
• Meditation improves his tolerance for repeated Dark Magic, making consecutive Killing Curses less mentally taxing. 13

Magic Sense and Detection

Matthew possesses unusually sensitive Magic Sense, which first allowed him to notice the metal disc’s faint magical fluctuations. 1

• Detects magical activity, hidden threats, and the conditions of nearby terrain or buildings. 1 11 36
• After reaching Level 2 Wizard Apprentice, his Magic Sense radius reaches approximately fifty meters. 24
• Used it with Preserved Egg’s clones to navigate the Chamber of Secrets without looking at the Basilisk. 24
• Cannot reliably sense exceptionally powerful wizards such as Dumbledore. 26 46

Shapeshifting Technique

Matthew uses Shapeshifting Technique offensively, especially in environments with abundant material to manipulate. 16

• Transformed a large tree into a Treant Guardian during an ambush. 16
• Created a Broad Greatsword and employed Shapeshifting Technique during the Basilisk battle. 16 25
• Learned the technique from the portrait of his grandmother, Lina, who excelled at it during her Hogwarts years. 26

Legilimency and Illusion Magic

Matthew uses Legilimency discreetly because Memory Magic is unfamiliar to the Runic Magic world’s wizards. 4 32

• Read Preserved Egg’s memories to confirm that time stopped in the original world while he crossed dimensions. 4
• Extracted information from Sir Rayne by guiding his memories through Legilimency. 32
• Uses the Illusionary Body Spell to hide himself, though specialized anti-invisibility tools and Dumbledore can see through it. 13 16 26

Potions and Alchemy

Matthew is an accomplished brewer who produces potions for trade, cultivation, and combat support. 1 6

• Sold batches of Stunning Potions under the identity Gehrman. 6
• Assisted Snape in brewing hospital supplies and received an improved Spirit Nourishing Potion formula. 20
• Brewed Potent Vitality Potion using troll blood to reinforce his Sea of Consciousness and support breakthroughs. 42 43 49
• Processed Basilisk remains into valuable potion and alchemical materials. 27

Quidditch

Matthew is a highly accurate Slytherin Beater known for targeting opposing players. 43

• Holds the title Annual Best Hitter after repeatedly knocking out opponents in the previous year’s matches. 43
• Joined the Slytherin team as a substitute against Gryffindor and contributed to a 210–150 victory. 43 46
• Used Bludgers to injure Alicia Spinnet and Katie Bell and to pressure Harry Potter during his pursuit of the Golden Snitch. 44 45

Equipment / Weapons / Items

• Wand — Matthew’s primary tool for standard spellcasting, Transfiguration, and combat. 1
• Metal Disc with red crystal — Resides in his mind; transports him between worlds after accumulating energy from magical creature corpses. 2 3
• Undetectable Extension Charm pocket / Bag of Infinite Space — Carries potions, magical materials, corpses, and other supplies. 6 25 39
• Pitch-black fingertip bone — Reduces Lightning Bolt’s rune-guidance time from eight seconds to six while carried. 17
• Tier One wizard shield — A large black shield acquired from Jack White; Matthew can maneuver it remotely with Invisible Hand. 39 40
• Magic Stones — Stores magical power; Matthew possesses eight stones following the White family investigation. 17 40
• Walking-stick Portkey — A Portkey keyed to his residence in Whitestone Town. 34
• Basilisk materials — Includes blood, eyes, fangs, flesh, bones, and skin harvested from the thousand-year Basilisk. 23 25 27

Relationships

• Preserved Egg — Matthew’s black Spirit Cat companion. Its intelligence, clones, and battlefield scouting are integral to Matthew’s strategies. 1 24 25
• Alfat Black — Matthew’s late grandfather; his portrait raised and educated Matthew in Ancient Runes. 4
• Luna Lovegood — Close friend and correspondent. Matthew gave her the Thunderbird egg that later hatched, and he remains concerned for her safety and her care of magical creatures. 5 19
• Chris Watson — Ordinary resident of Whitestone Town whom Matthew saved from wolves and Phantom Demons; Chris later provides lodging, local information, and access to his great-uncle’s books. 2 3 10
• Tina Watson — Chris’s daughter; she admires Matthew after he repairs her sled and repeatedly protects her and Chris. 2 3
• Link Watson — Level 3 Wizard Apprentice and Court Wizard. A misunderstanding developed into mutual respect, cooperation, and a shared investigation into Whitestone Town’s disappearances. 12 30 49
• Anna — Link’s subordinate and a Level 2 Wizard Apprentice. She initially attacks Matthew but later works alongside him as a fellow investigator. 12 30
• Lady Alsha — Court Wizard officer and host of Whitestone Town’s exchange meetings. She invites Matthew into local wizarding society and trusts his analytical ability in the ritual-murder case. 14 28 48
• Merlin — A Hogwarts portrait who identifies Matthew’s Meditation Method and sends him through time to complete the Basilisk trial. 21 22 26
• Albus Dumbledore — Hogwarts professor and later confidant. Dumbledore observes Matthew closely, sees through his disguise in 1943, and offers him support after learning about his past. 26 47
• Severus Snape — Matthew’s Potions professor. Snape grants access to Slytherin’s manuscripts, works with Matthew on hospital potions, and rewards his assistance. 19 20
• Bellatrix Lestrange — Matthew’s aunt and the Death Eater responsible for murdering his parents. 4

Story Role / Major Arcs

• Discovery of the Otherworld — Matthew finds the metal disc, survives the Winter Forest, saves Chris and Tina, and begins studying Runic Magic. 1 2 3 4
• Whitestone Town Integration — He enters Whitestone’s wizard circle, cultivates the Aemon Basic Meditation Method, receives Lady Alsha’s invitation, and survives an ambush after the banquet. 10 14 16 17
• Meditation Method Mystery — Matthew investigates Slytherin’s manuscripts, consults Merlin, and learns why Meditation Methods vanished from wizarding history. 19 21 22
• 1943 Basilisk Trial — He travels to the past, follows Tom Riddle into the Chamber of Secrets, defeats the Basilisk with Preserved Egg, and returns without destabilizing the timeline. 23 24 25 26
• Whitestone Missing-Persons Case — As a Temporary Investigator, Matthew helps uncover Old White’s mutation, investigates the White ancestral home, kills Jack White, and takes the resources hidden in Jack’s estate. 30 36 39
• Hogwarts Troll and Quidditch Match — Matthew subdues the Halloween troll to collect blood for a potion, then leads Slytherin’s Beater offense against Gryffindor. 42 43 44 45
• Level 3 Breakthrough — Using Potent Vitality Potion and Dragon Scale Incense, Matthew reaches Level 3 Wizard Apprentice and significantly widens the gap between himself and ordinary apprentices. 49

Trivia

• Matthew cleaned the Sorting Hat with an Aqueous Spring spell; the Hat responded by declaring that he ought to be sorted into Azkaban. 9
• He created Speak with Cats from the instinctive magic that once allowed him to understand Preserved Egg as a child. 24
• He considers the Basilisk’s body a treasure, valuing its eyes, venomous fangs, blood, flesh, bones, and skin for alchemy and potion-making. 23
• He does not initially intend to interfere with the Philosopher’s Stone plot, but Merlin later informs him that obtaining the Stone is necessary for deeper time travel. 7 26