Rob Ostlere is a British actor. He is an alumnus of RADA with extensive stage work in productions at the academy. On TV he has appeared in the British soap Doctors and in the film Tortoise. In Game of Thrones Ostlere played the role of Ser Waymar Royce, replacing Jamie Campbell Bower who had played the role in the unaired pilot episode. Bower was unavailable for the reshoots of the prologue sequence.