• Character Idris Oakby was the founder of the Society for the Support of Squibs (S.S.S.) (JKR, WoM). Read More
• Character Liechtenstein’s Minister for Magic who had to intervene when the Liechtenstein Quidditch team’s mascot, Hans the Augurey, was kidnapped during the 2014 Quidditch World Cup by over-excited US fans (Pm). Read More
• Character The Bulgarian Minister for Magic, who watches the Quidditch World Cup along with Cornelius Fudge in the top box. He understands English, but pretends not to — Fudge, who had been “miming” or acting out words all day, was quite put out when Oblansk/Obalonsk began to speak English… Read More
• Character Octavius Pepper was a wizard who disappeared in the early spring of 1997, as reported by the Daily Prophet. It was implied that the disappearance is connected to an attack by Death Eaters (HBP21). Read More
• Character Oddvar Spillum was the coach for the Norwegian National Quidditch team in 2014. Read More
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• Character Whoever Ogden is or was, he has lent his name to the popular (and powerful) wizarding spirit “Ogden’s Old Firewhiskey.”… Read More
• Character Tiberius Ogden was a Wizengamot elder who (along with Griselda Marchbanks) resigned in protest when Fudge appointed Dolores Umbridge as the first Hogwarts High Inquisitor (OP15). Ogden was a friend of Professor Tofty of the Wizarding Examinations Authority (OP31). Read More
• Character Gamekeeper at Hogwarts during Molly Weasley’s era, probably the man who held the job before Hagrid. Molly seemed to be rather fond of him (GF31). Read More
• Character Dunbar Oglethorpe was chief of Q.U.A.B.B.L.E., the Quidditch Union for the Administration and Betterment of the British League and its Endeavors (fw). Read More
• Character Mercy Ojukwu was a Beater for the Nigerian National Team at the 2014 Quidditch World Cup. Read More
• Character Aliko Okoye was a beater for the Nigerian National Quidditch Team at the 2014 Quidditch World Cup. Read More
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• Character Olive Hornby was a Hogwarts student in the early 1940s. She teased Myrtle about her glasses, but regretted it later when Myrtle was killed and came back to haunt her (CS16). Read More
• Character Oliver Rivers was one of the original forty students at Hogwarts that J.K. Rowling created. He never appeared in canon, but did appear in the BBC interview with J.K. Rowling in 2001, Harry Potter and Me. His name also appears in a new writing from J.K. Rowling on Pottermore,… Read More
• Character Gryffindor (1987-1994), Quidditch team Captain/Keeper 1990-1994, and possibly earlier. Read More
• Character The Ollivanders are a famous wizarding family of wandmakers whose wands have been sold since Roman times. They are one of the so-called ‘Sacred Twenty-Eight’ families listed in the Pure-Blood Directory of the early 1930s. Notable Members of this family include: Gervaise Ollivander Geraint Ollivander Gerbold Octavius Ollivander… Read More
• Character An old wandmaker – “the best” – who who runs Ollivander’s on Diagon Alley (HBP6). He has eerie, moon-like eyes and makes Harry a bit uncomfortable, as he seems just as fascinated by the power of wands used for evil as those used for good. Ollivander remembers every wand… Read More
• Character Gervaise Ollivander was a wandmaker and the father of Garrick Ollivander (Pm). According to his son, “You will never fool the cedar carrier” was a phrase he often used to describe owners of cedar wands (Pm). Read More
• Character Olympe Maxime was the headmistress of Beauxbatons Academy in France. She was respected both for her work at her job (GF29) and for her wizarding power (OP20). Though she was a half-giant with the height to prove it, she publicly denied her giant ancestry (… Read More
• Character Oona was an innkeeper in Yorkshire in the 1100s. She provided the local “Kwidditch” team with the barrels they used for goals and afterwards, gave free mead all night to celebrate the team’s victory over Ilkley (QA3). Read More
• Character Orabella Nuttley was a Ministry of Magic employee and the inventor of the Mending Charm. She worked for the British Ministry of Magic’s Improper Use of Magic Office, and was put in charge of logistics for travellers and their luggage for a broom race from Aberdeen to the Colosseum in Rome. The… Read More
• Character Father of Dolores Umbridge, Orford was an unambitious man who worked for many years in Magical Maintenance at the Ministry of Magic Headquarters. Umbridge was unhappily married for over fifteen years to a Muggle, Ellen Cracknell. They had two children, their older a daughter, Dolores, and the younger a squib son. Eventually,… Read More
• Character Father of Sirius and Regulus; he heavily fortified the family home (likely inherited by his wife, also a Black) at number twelve Grimmauld Place, London. Son of Arcturus and Melania (MacMillan) Black (BFT). One older sister: Lucretia (1915-1992). Married his second cousin Walburga Black (BFT). Read More
• Character Orla Quirke was a Hogwarts student who was sorted into Ravenclaw on 1 September, 1994 (GF12). Read More
• Character Orsino Thruston was the drummer for the wizarding rock band The Weird Sisters (FW). Read More
• Character Ortiz O’Flaherty was an American and the author of Bigfoot’s Last Stand, a book about the Great Sasquatch Rebellion of 1892 (Pm). Read More
• Character Unctuous Osbert was the tenth Minister for Magic. He was in office from 1789 to 1798. He was viewed with suspicion due to his close ties with wealthy pure-bloods (Pm). Read More
• Character Myron Otherhaus was a handsome wizard who lived in Bury St Edmunds. He fell in love with Violet Tillyman when she accidentally arrived in his house via the Floo Network (Pm). Read More
• Character Otmar Frick was a Chaser for the Liechtenstein National Team at the 2014 Quidditch World Cup. Read More
• Character Ottaline Gambol was Minister for Magic from 1827 to 1835. She was more appreciative of Muggles and their technology than many wizards of the time, and thus introduced the Hogwarts Express as the method of transport to Hogwarts (Pm). Read More
• Character Otto Bagman was a wizard who got into trouble with the Misuse of Muggle Artifacts Office because of an unusual lawnmower which Arthur Weasley straightened out for him. Out of gratitude, Otto’s brother Ludo then arranged the Weasleys’ tickets to the Quidditch World Cup (GF5). Read More