Deng Quon was the Captain of the Chinese National Quidditch Team. He is noted in the history of Quidditch for leading his team in a notoriously brutal match against the Transylvanian National Quidditch Team. All known information about him comes from the supplementary book Quidditch Through the Ages.
The only recorded event in Deng Quon's career is an infamous Quidditch match between his Chinese National Quidditch Team and the Transylvanian National Quidditch Team. The game is remembered as “one of the most brutal of all time.” During the match, Deng Quon accused the Transylvanian Captain, Ladislas Zamojski, of biting him on the arm. Despite his protests, his team ultimately suffered a dramatic loss. (Quidditch Through the Ages)
There is no description of Deng Quon's physical appearance in the source material. His personality is not detailed, but his accusation against Ladislas Zamojski suggests he was either prone to making complaints or was a victim of the extreme foul play for which the match became famous. (Quidditch Through the Ages)
Deng Quon's only known significant relationship is with his rival, Ladislas Zamojski, the Captain of the Transylvanian team. Their interaction on the Quidditch pitch was highly antagonistic, culminating in Quon's accusation of being bitten during their match. (Quidditch Through the Ages)
Deng (邓) is a common Chinese surname. Quon is a Romanization of several Chinese names, most commonly Guān (关). The name combination firmly establishes the character's Chinese nationality.
Deng Quon is not a character from the original seven novels. He is mentioned exclusively in the supplementary book, Quidditch Through the Ages, written by J.K. Rowling under the pseudonym Kennilworthy Whisp.