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Cerberus Langarm: "We've got ourselves a missing wizard in Cornwall. Ever heard of Bilius Finbok?"
Mathilda Grimblehawk: "Nervous chap? Works in the Department of Intoxicating Substances? Smells of sulphur? Mixes fantastic cocktails?"
Cerberus Langarm and Mathilda Grimblehawk discuss Bilius Finbok's disappearance[src]

Bilius Finbok was an English wizard that lived in Cornwall and worked in the British Ministry of Magic's Department of Intoxicating Substances. He was described by Mathilda Grimblehawk as smelling of sulphur and able to mix terrific cocktails.[1]


Finbok may have been in Hufflepuff House at Hogwarts School of Witchcraft and Wizardry as there was a Hufflepuff scarf in his cottage and in his secret owlery.[1]

His disappearance from his cottage was investigated by Mathilda Grimblehawk and her partner. He was found to have been transported to St David's, a Muggle hospital, after his Muggle neighbour Sara Farnham discovered him injured and unconscious.[1]

Ultimately, his injuries were linked to the use of illegal materials from magical beasts in the brewing of potions, for which he was summoned to appear before the Ministry.[1]

Magical abilities and skills

  • Potions: Finbok was proficient in the magical art and science of potion-making, brewing many experimental mixtures in his spare time as an amateur Potioneer. These used an eclectic range of different ingredients, some of which were illegally sourced.[1]
  • Expert mixologist: Finbok was known for his skill in mixing cocktails. This was likely an offshoot of potion experiments, and his familiarity with various types of alcohol through his work.
  • Underworld connections: Some of his potion ingredients were illegally sourced, suggesting he was familiar with at least one disreputable merchant to obtain them.


Notes and references

Potions (class)
Arsenius Jigger · Bilius Finbok · Blossom Degrasse · Dai Ryusaki · Damocles Belby · Erica Stainwright · Fleamont Potter · Gethsemane Prickle · Gilderoy Lockhart · Glossy · Glover Hipworth · Golpalott · Gregory the Smarmy · Gunhilda de Gorsemoor · Hector Dagworth-Granger · Hesper Starkey · J. Pippin · Laverne de Montmorency · Libatius Borage · Linfred of Stinchcombe · Mulpepper · Mundungus Fletcher · Nicolas Flamel · Phineas Bourne · Quintia McQuoid · Regulus Moonshine · Rogue alchemist · Rubens Winikus · Sacharissa Tugwood · Skower · Tilden Toots · Dr Ubbly · Vindictus Viridian · Zenith Xeep · Zygmunt Budge
Potions at Hogwarts
Cauldron cupboard · Dungeon Five · Potions basement · Potions Classroom · Potions Club · Potions Staircase · Potion Master's office · Potions Storeroom
Professors Bartholomew · Horace Slughorn · Severus Snape · Swoopstikes · Unnamed Professor (16th century) · Unnamed Professor (19th century) · Unnamed Professor (2021)
Textbooks A Collection of Above Three Hundred Receipts in Cookery, Physick, and Surgery · Advanced Potion-Making · Ingredient Encyclopedia · Magical Drafts and Potions · One Thousand Magical Herbs and Fungi
Potions studied at Hogwarts
Ageing Potion · Amortentia · Antidotes · Antidote to Common Poisons · Antidote to garish pink blended poison · Antidote to Uncommon Poisons · Antidote to Veritaserum · Befuddlement Draught · Calming Draught · Cheese-Based Potions · Confusing Concoction · Cough Potion · Cure for Boils · Deflating Draught · Doxycide · Draught of Living Death · Draught of Peace · Elixir to Induce Euphoria · Erumpent Potion · Essence of Insanity · Everlasting Elixirs · Felix Felicis · Fire Protection Potion · Forgetfulness Potion · The Famous French Method for the Bite of a Mad Dog · Garish pink blended poison · Garrotting Gas · Girding Potion · Hair-Raising Potion · Herbicide Potion · Hiccoughing Solution · Invigoration Draught · Laughing Potion · Memory Potion · Pepperup Potion · Polyjuice Potion · Pompion Potion · Potion for Dreamless Sleep · Rat Tonic · Regerminating Potion · Scintillation Solution · Shrinking Solution · Skele-Gro · Sleeping Draught · Strength Potion · Strengthening Solution · Swelling Solution · Undetectable Poisons · Veritaserum · Weedosoros · Wideye Potion · Wiggenweld Potion · Wit-Sharpening Potion · Wolfsbane Potion · Wound-Cleaning Potion