Bob Ogden

Bob Ogden (fl. 1925) was a wizard who worked in the Department of Magical Law Enforcement, a department of the Ministry of Magic, and led the Magical Law Enforcement Squad in the 1920s. As part of his duties, he once visited the Gaunt shack, as the Department believed that Morfin Gaunt performed magic in front of a Muggle but also accosted that Muggle, known as Tom Riddle Sr., and performed a jinx or hex on him. Despite encountering little cooperation from the inhabitants of the Gaunt shack, Ogden Apparated to the Ministry and returned with reinforcements, who helped him overpowered the Gaunts and turn them over to the Wizengamot to await judgement. His life after this incident is unknown, but he died sometime in or before 1996 of natural causes.

Early life
Ogden was born either under a pure wizarding family or under a half-Muggle, half-wizarding family. He also seemed to have trouble disguising as a Muggle like most wizards, thereby ruling out the possibility that he was a Muggle-born. He presumably attended Hogwarts School of Witchcraft and Wizardry, and after Hogwarts was employed by the Ministry of Magic.

Professional life
Ogden was employed by the Ministry of Magic and worked at the Department of Magical Law Enforcement. He eventually rose to become head of the Magical Law Enforcement Squad.

Visit to the Gaunt shack
Around 1920s, Ogden, "disguised" in a strange assortment of Muggle clothes (due to his inexperience with trying to look like Muggles) which included a frock-coat and spats over a striped one-piece bathing costume, went to the Gaunt shack, to interview one of its occupants. The Department had reason to believe that not only did Morfin Gaunt perform magic in front of a Muggle the previous night, but he accosted that same Muggle and performed a jinx or hex on him (Tom Riddle Sr.) and caused him to erupt in highly painful hives.

Upon arrival, Ogden was shocked when he found himself held at knife and wand-point by Morfin and was unable to understand their use of Parseltongue when Morfin commanded him to leave. Morfin then fired a jinx that temporarily damaged Ogden's nose. Morfin's father, Marvolo Gaunt, who instead used English, called Morfin off and confronted Ogden. Ogden was polite and courteous and was reluctantly allowed to enter to discuss Morfin's serious breach of wizarding law which occurred in the early hours of that morning.

Upon entry into the dilapidated and filthy shack, Ogden politely greeted the third and final occupant, Merope Gaunt, and then engaged in conversation with Marvolo, informing him of Morfin's crimes. Ogden witnessed the deplorable treatment of Merope by her family and Marvolo's stubbornness and belief in pure-blood superiority, ignoring Ogden's claim that Morfin had broken wizarding law and Muggles "had it coming [to them]". Ogden then pulled out a small scroll of parchment, which he revealed was a summons to a Ministry hearing, though this made matters far worse, as Marvolo went into a tirade about how their "superior" family should not be summoned by anyone. Ogden justified that it was his right as Head of the Magical Law Enforcement Squad that allowed him to summon suspects of magical crime, and largely ignored Marvolo's ranting. Afterward, Ogden said that Morfin made an unjustified attack on the defenseless Muggle, which warranted investigation and punishment.

Seeing that their discussion was getting them nowhere, Ogden rose to leave, informing Marvolo of the time and date of the hearing and Morfin's expectancy to attend it, when suddenly the three people began using Parseltongue again, leaving Ogden bewildered and irritated by the sudden outbreak of inaudible language usage. Marvolo suddenly lunged to choke Merope, and Ogden, concerned for her safety, promptly performed a Revulsion Jinx, making Marvolo fall away, but causing Morfin to begin firing hexes indiscriminately at him. Ogden fled for his life. As he left, Ogden was hit by the Muggle victim; Tom Riddle Sr.'s horse carriage, and after a brief moment of disorientation, Ogden set off again, Apparating back to the Ministry and returned with reinforcements within fifteen minutes. Ogden and his men overpowered the Gaunts when they attempted to fight, removed them from the cottage, and turned them over to the Wizengamot, where they passed judgment.

Death
Ogden died sometime in or before 1996, of natural causes, but not before Albus Dumbledore, during his investigations into Lord Voldemort's mysterious past, tracked him down and persuaded Ogden to confide his recollections of his encounter with the Gaunt family to him. These memories were placed in his Pensieve and later shown to Harry Potter. Ogden remained unaware that his actions set the stage for the creation and rise of Voldemort himself.

Physical appearance
Bob Ogden was described as being a "short, plump man wearing enormously thick glasses that reduced his eyes to molelike specks". Like most wizards, he was inexperienced when trying to look like a Muggle; his choice of clothing was a frock coat and spats over a striped one-piece bathing costume. Despite his appearance, Ogden was an extremely competent wizard and a straight-to-the-point man, who tolerated a great deal from others, and felt no need to justify his Blood Status to anyone, prompting Harry Potter to reflect that his respect for the man when he saw him in a memory was greatly improved by his dismissal of blood status as being important to any kind of discussion.

Personality and traits
Bob Ogden was at first thought to be rather stupid by Harry Potter because of his inability to understand Morfin's threats when he arrived at the Riddle house. However the only reason Bob didn't understand Morfin was because the latter was speaking Parseltongue. He was unintimidated by Marvolo Gaunt's aggressive demeanour and was appalled by the way Marvolo treated his daughter Merope. Bob was polite towards Merope and treated her kindly unlike her father and brother who treated her like she was a slave. He also didn't seem to think blood purity was important, earning Harry's respect.

Magical abilities and skills

 * Apparition: Bob Ogden used Apparition to get back to the Ministry of Magic and returned with reinforcements to help him subdue Marvolo and Morfin Gaunt.
 * Magical skills: Ogden successfully used the Revulsion Jinx to prevent Marvolo from attacking his daughter. He also quickly mended a pot that was accidentally smashed by Merope as well as using a counter curse when Morfin used the same spell he'd used on Tom Riddle.

Behind the scenes

 * Bob Odgen and his memory scene with the Gaunts were completely omitted from the film adaptation of Harry Potter and the Half-Blood Prince.
 * It is possible that Ogden is related to former-Wizengamot member Tiberius Ogden, though it remains unconfirmed.
 * It is also quite possible he was the inventor - or a relative thereof - of "Ogden's Old Firewhiskey", though this is merely speculation.
 * Ironically enough, his actions were what set in motion what would lead to the very existence of Lord Voldemort himself - if Ogden had not returned with reinforcements, Merope would have never been freed and had the opportunity to seduce Tom Riddle Sr. Had none of this happened, Lord Voldemort would have never been conceived.
 * Marvolo Gaunt insulted him as a mudblood, an insult normally reserved for a wizard or witch of entirely Muggle birth. His complete unfamiliarity with proper Muggle dress, however, suggests that he was at the very least half-blood.

Appearances

 * Harry Potter and the Half-Blood Prince
 * Harry Potter and the Deathly Hallows