Playing a beloved character like Game of Thrones’ Arya comes with a lot of pressure—series author George R.R. Martin’s wife reportedly forbade him from killing off the character—but over five seasons, Williams has proven she’s more than up to the challenge. The actress, as it turns out, is just as likable as her plucky onscreen counterpart—her delightfully off-kilter reaction to the shocking deaths of certain characters was retweeted more than 3,500 times. Williams will likely only continue to become more popular—the HBO show set a series ratings record ratings record with 8.11 million viewers of its last finale—as she branches out. The actress is also appearing on another genre cult favorite, Doctor Who, this year. —E.D.