Otto Bagman

Otto Bagman is a minor wizard and the brother of Ludo Bagman. He is mentioned only in Harry Potter and the Goblet of Fire, where his primary role in the narrative is to highlight the depth of his brother's irresponsibility and gambling problems. Otto's ownership of a Muggle lawnmower becomes a point of contention when Ludo attempts to use it to pay off his debts to a group of goblins.

Otto's personal history is largely unknown. He appears in the story indirectly during the 1994 Quidditch World Cup and the subsequent Triwizard Tournament.

• Following the World Cup, Ludo Bagman is seen trying to placate his goblin creditors by offering them his brother Otto's prized Muggle lawnmower, describing Otto as “a bit of a weirdo.”
• Later in the year, the same goblins confront Ludo in the Three Broomsticks in Hogsmeade. They reveal that Otto had made inquiries about his missing lawnmower and was “not a happy man” upon learning that Ludo had gambled it away without his permission.
• Otto is never seen in person, and his ultimate fate or the resolution of the lawnmower incident is not mentioned in the novels.

Otto's physical appearance is never described in the novels. Based on the limited information available, Otto is portrayed as a victim of his brother's reckless behavior. His anger over the theft of his lawnmower suggests he is more responsible than Ludo. His brother calls him “a bit of a weirdo,” and his ownership of a Muggle artifact he apparently cannot operate properly indicates an eccentric interest in the non-magical world, a trait shared by other wizards like Arthur Weasley.

As Otto never appears directly in the story, his magical abilities, skills, and wand details are unknown.

• Lawnmower: Otto's most notable possession was a Muggle lawnmower “with all the trimmings.” Ludo Bagman attempted to use it to settle a debt with goblins, but they were unimpressed, as the machine apparently did not work. This suggests Otto, like many wizards, was fascinated by Muggle technology but lacked the practical knowledge to use it correctly.

• Ludo Bagman (Brother): Otto's relationship with his brother Ludo is clearly strained. Ludo steals from him and speaks of him dismissively. Otto's anger upon discovering the theft demonstrates the negative impact of Ludo's gambling addiction on his family.
• Goblins: Otto has an indirect and adversarial relationship with the goblins to whom Ludo is indebted. They are aware of his existence and his anger over the stolen lawnmower, which they use as leverage against Ludo.

• Otto: A name of German origin meaning “wealth” or “fortune.” This is deeply ironic, as Otto's only connection to the plot involves his property being stolen to cover his brother's gambling losses.
• Bagman: A “bagman” is a slang term for an individual who collects, transports, or distributes illicit money. While this moniker is perfectly suited to the shady dealings of Ludo Bagman, it is Otto, as a member of the family, who suffers the consequences of these actions.

Otto Bagman is a book-only character and does not appear in the film adaptation of Harry Potter and the Goblet of Fire. There is no additional information about him from J.K. Rowling on Pottermore or in interviews.