Borgin

Mr. Borgin is the co-owner of Borgin and Burkes, a shop in Knockturn Alley which buys and sells objects of dark magic and other dangerous magical artifacts. He is described as having oily hair and just as oily voice. Borgin seems to operate the shop mostly by himself, and it is unknown what happened to his co-owner Caractacus Burke. Borgin states to Lucius Malfoy that blood purity is as significant to him as ever, which suggests that he is a pure-blood.

Biography
In 1992, Lucius Malfoy came to Borgin and Burkes to sell him several objects related to black magic, fearing that the Ministry of Magic would soon be investigating his mansion. Borgin seemed displeased that Malfoy did not want to buy anything, but tried to convince Malfoy's son Draco to buy the Hand of Glory. Once the Malfoys left, Borgin showed signs of disliking Malfoy, thinking that the objects Malfoy had brought him was only a small bit of what Malfoy was hiding in his mansion.

In 1996, Draco Malfoy came to Borgin to reserve the Vanishing Cabinet, which he planned to use to smuggle Death Eaters into Hogwarts. He also asked for instructions on how to repair the other Vanishing Cabinet, located in Hogwarts. Borgin was not sure how this would be possible without having the cabinet with him, but became much more cooperative when Draco showed him his Dark Mark and threatened to sic Fenrir Greyback on him if he would not succeed.

Hermione Granger tried to trick Borgin into telling her what Draco had been doing inside the shop, but Borgin easily saw through it and threw her out of the shop.

Appearances

 * Harry Potter and the Chamber of Secrets
 * Harry Potter and the Half-Blood Prince