https://www.cnet.com/news/hbo-unleashes-game-of-thrones-dragons-on-donald-trump-tweet/

But on Twitter, various Game of Thrones representatives had more lively reactions. HBO's official account responded with a tweet referring to one of the show's fictional languages, writing, "How do you say trademark misuse in Dothraki?" 

Cast members reacted negatively also, with Maisie Williams, who plays Arya Stark, shooting back, "Not today."