Master has given Dobby a sock ... Dobby is free! The character from our fanart Harry Potter Dobby is Free Sticker appears as a male house-elf who has served the Malfoy family for a long time. The adorable bat-eared creature can only be freed when their master gives them an article of clothing, and Potter helps Dobby by tricking his evil master Lucius Malfoy. Harry gave him a book with a sock between its pages.