John Theodore Cuthbert Moore-Brabazon (ジョン・セオドア・カスバート・ムーア＝ブラバゾン, Jon Seodoa Kasubāto Mūa Burabazon) is one of George Joestar's best friends. John is a student who first works at an automative garage in London as a private mechanic for Charles Rolls. He is the star of the Royal Automobile Club. George's first impressions of him are that he wears an expensive suit poorly and stumps around the garage scowling at every car like a bold thief.
Four of the seven cars in the garage at the time are owned by John for work-related research and the remaining three are test designs given to him by his boss. None of the mechanics but John are allowed to touch any of those cars. George starts admiring his handiwork and gets lost in thought until John yells at George to quit staring at him. The two get into a fight when John throws a wrench at George's car leading to George attempting to run John over. John runs out of the shop and jumps into a working eighth car he had parked out front and drives away. They end up in a car chase through the industrial district, although it isn't much of a contest since John's car is twice as fast as George's. John drives in circles around George, insulting him and calling him childish names while George begins to cry. John laughs and then challenges George to a race through all of London. They startle horses and pedestrians along the way and start getting pursued by mounted police but manage to escape, heading back to the garage.
George describes John's handiwork to be like magic, as any car he fixed would run and turn better than before. If he drove off in a car and came back, when he stepped out of it the entire vehicle would look polished to a new level of beauty. When he raced, he was less interested in winning than in enjoying himself to the fullest. His results were too inconsistent for gamblers, but as a spectator his performance was full of gasp-inspiring moves and previously unheard of strategic maneuvers. The other drivers considered him one of the best. As George was John's only younger friend, John quite likes him and often gets George into trouble. John says it doesn't matter if George killed Kenton Motorize or not, because soon all men will go to war and become killers.
In later years, George finally starts beating John in RAC races. John goes off to a circuit race in the Ardennes in Belgium. He drives a Minerva 600 kilometers in six hours, fourteen minutes, and five seconds and wins the race. Afterwards, John calls George to let him know that his boss wants to start working on planes next.
In 1909, John is the first Englishman to officially fly a plane on the Isle of Sheppey. A year later, his boss dies in an airplane crash and John decides to never fly again. He starts working as an engineer in the city.
In 1915, George calls John and informs him about the large English squad flying planes in the sky actually being zombies. John cries to see what his dead friends have become. He starts panicking and is about to hang up the phone until George convinces him that he needs to fight too, so that their friends can rest in peace. John manages to gather nine other men and they destroy several zombies by controlling the perimeter and keeping them trapped in London. They meet up with George, Lisa Lisa, and Steven Motorize, flashing their lights in Morse code to prove they aren't more zombies. As John is involved politically, George asks John to help Steven get a pardon by saying he helped save London.
After the war, John tells George to try getting involved in politics as well. During this time, John would constantly be at odds with William Cardinal, an arrogant man who tends to abuse his power.
In 1920, John campaigns to be George's best man for his wedding. It's a tough choice for George, who ends up choosing Steven instead.
Manga Appearances
Anime Appearances
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