Harry Potter and the Half-Blood Prince
by J.K. Rowling
Fred and George Weasley
The twins Fred and George are the pranksters in the Weasley family. They are often up to no good. Having dropped out of Hogwarts, Fred and George have co-founded a joke shop in Diagon Alley called Weasleys' Wizard Wheezes. The shop is a huge success, even in spite of the dangerous times. Learn more about their products here.