Can’t believe it: Breaking Bad star Dean Norris on RJ Mitte's death. 'Breaking Bad' actor Dean Norris reacted to the death of RJ Mitte, who played Walter White Jr in the Emmy-winning drama show. "This is so heartbreaking, I can’t believe it," Norris said. "Though RJ didn’t play my TV son, I always looked out for him as...young kid on set. He was...sweetheart of...young man and will be greatly missed," Norris added.