1. Onomatopoeia
Even though the creator of the character, Clerks and Dogma director Kevin Smith, believes that a cinematic version of his character wouldnt work I still believe that Onomatopoeia is one of the coolest characters ever and arguably one the most interesting characters in Green Arrows rogues gallery. For those of you that are unfamiliar with the character, he fist appeared in Green Arrow Vol 3. # 12 in a arc called The Sound of Violence. Onomatopoeia is a serial killer that targets non-super powered superheroes. He gets his names from the actions that he imitates around him. (When he fires a gun he says BLAM). Kevin Smith had once said that because of Onomatopoeia unusual characteristics it would be impossible for him to be in anything else but the pages of a comic book. I believe if you give him silencers for his duel wielding pistols you would be able to her him say BLAM. This character would be a great villain in the show Arrow. He is a cold blooded killer just like Green Arrow in the show and they could use the same storyline Smith used when he brought Onomatopoeia to the Batman universe in Batman: The Widening Gyre. In this story, Onomatopoeia disguises himself as a new vigilante and gets under Batmans wing. When he gets close enough to Batman he betrays him and kills his love interest. This type of dark betrayal can easily be portrayed