Arthur’s adversarial relationship with Orm is one of the best aspects of the Aquaman mythology, so it’s good to hear Wan telling EW that their rivalry will be the main driving force in the movie.
Aquaman will present a similar scenario, with Patrick Wilson’s Orm desiring to become Atlantis’ king and is willing to achieve that goal by any means necessary.
James Wan is of course referring to Hamlet, where the eponymous character’s uncle, Claudius, had killed his brother and seized the throne of Denmark for himself right before the story began.
That being said, I expect that upon Aquaman’s release, there will inevitably be comparisons to Thor and Loki’s relationship in the Marvel Cinematic Universe.