Aquaman
It’s likely that the reluctant leader of Atlantis already exists within The CW’s Arrowverse. For example, a deleted scene from The Flash’s debut episode has Joe West taking a jab at Barry for seemingly investigating a man who can talk to fish somewhere near Amnesty Bay. Season 2 is a bit less secretive, when Jay Garrick talks about his home on Earth-2, he briefly mentions a close friend who lives in Atlantis.
So, why does the ruler of the seven seas deserve his own show? Well, to be frank, not many people took the Green Arrow or The Flash all too seriously at first. A man with a bow and arrow and some dude who can run super fast sounded like generic, dull superheroes to some, but The CW has shown us the layered complexity of these characters and their unique skill sets.
Aquaman is a very intriguing superhuman with unparalleled strength and incredibly powerful abilities. He even got the better of Wonder Woman and Superman at times, which is quite an impressive feat. While Injustice: Gods Among Us and Zack Snyder’s upcoming Justice League movie manage to give the character a more fearsome and badass appearance, comic book fanatics still deserve a faithful interpretation of the character that properly takes its time to allow his background story to unfold naturally. And what better way is there than to introduce him into an already well-established universe?