In the ad, Hodor (Hodor) is working his dream job of wearing a name tag and not carrying 141 pounds of exposition on his back. Suddenly a crowd bursts in and repeatedly shouts orders of "chicken and fries." He then starts repeating "chicken and fries," over and over until it becomes "chicken and rice," while turning his back on the angry masses.
Yup, the whole thing is a parody of Hodor's (Hodor) tragic death scene in Season 6. Why would they take one of the saddest moments in the show and use it to market fast food? That would be like re-staging the Red Wedding with Taco Bell ... Which, now that we think about it, would be perfectly appropriate for a scene of people getting stabbing pains while eating.
And Hodor isn't the only GOT character to show up in a commercial shortly after their demise. In Scotland, former Lord Commander of the Night's Watch Jeor Mormont (James Cosmo) randomly shows up to dispense financial advice to millennials. Because who wouldn't apply for home mortgage based on the word of a dead fictional knight who lived next to a giant ice wall with hundreds of roommates and no plumbing?