Question: What fictional character that fights terrorism is played by the actor who played a Dothraki in seaons 1 & 2 of Game of Thrones?
Sentence (from "Walter O'Brien (character)"): The character, played by actor Elyes Gabel, follows a loose trajectory of Walter O'Brien's real-life exploits that thwart terrorism and disasters in each episode of the series.
Relevant evidence: Yes