The last installment of the Harry Potter series comes to cinemas today, bringing an end to one of the most popular sagas of our time. It's been more than 14 years since the first Potter book hit shelves and Harry, Ron, Hermione, Voldemort and Snape (yes, even Snape) have been a big part of people's lives. So much that they've decided to commemorate them with tattoos. In honour of the entire Hogwarts crew, we asked 16 tatted-up Potter fans to tell us about why they got their pieces. From dark marks to Protego charms, this is some magic ink!