Freddie Stroma, who you might recognize as Cormac McLaggen from "Harry Potter," the DJ in "Pitch Perfect," or, more recently, Adam on "Unreal" will be heading to Westeros soon. Per Buzzfeed, the actor has been cast as Dickon Tarly, younger brother to Samwell Tarly (John Bradley) on "Game of Thrones."
The character hasn't been introduced in the books, so this will be the first fans have gotten to know of Dickon, and another example of the show moving beyond what's been established in the world of the books. Given that Papa Tarly chose him as his heir over the older Samwell, chances are he and Samwell don't get along too well. But Stroma has made something of a specialty of playing handsome jerks, so we're assuming the folks at "Game of Thrones" knew that when they cast him.