Silk is a character in David Eddings'popular series of books, the Belgariad and appears briefly in his second series of books - the Mallorean.
Silk's real name is Prince Khedlar, as he is, in fact, nephew to the King of Drasnia - Rhodar. Silk also goes by the name of Ambar of Kotu and Radek of Boktor.
Although not much is known about Silk's past, mentions of it arise regularly throughout the stories. These include infiltrating the palace of Cherek, crashing a spice ship into the Hook of Arendia and he is well known for his adventures at The Great Fair in Arendia.
One of Silk's many (and possibly his best) quirks is his love for his aunt. This is made worse by the fact that his aunt is also the Queen of Drasnia. Another of Silk's traits is the his ability to shift the muscles in his face to look like somebody completely different.
Silk is a great character because he is so unpredictable and is a generally awful person, but extremely likable.