And now a surprise, as George R.R. Martin trots out Froggie the Gremlin for a most unexpected casting clue. For those who’ve missed them previously, for prior seasons Martin has occasionally revealed actors who’ve been cast in roles by the use of clues. Inevitably, he’d use his Froggy the Gremlin avatar to signal when it was a clue.
This one threw me, since it’s rather early to be casting season 4 when the 5th season isn’t even greenlit. But of course, others who are smarter (or at least in earlier timezones) resolved the clue quite quickly: “It’s the Pits!” refers to a specific pit that will be appearing this season, and the “son of Homer” is, of course, Bart Simpson.