James Wan has done the impossible and made a successful Aquaman movie. Now that it's broken through the $1 billion mark, it’s worth remembering that for nearly two decades its hero was the butt of jokes about talking to fish and the idea of his own solo film was considered so ridiculous it was parodied in Entourage. Now, with the pic having received broadly positive reviews, a high audience score and generally proven to be a huge international success, Warner Bros. are already turning their eyes to Aquaman 2.