While DC Comics may currently be falling a little flat in its movie sector (I'm waiting for Batman vs. Superman to change that), they seem to be effortlessly dominating television. Shows like Arrow, The Flash, and Gotham have so far succeeded in providing solid entertainment to both casual viewers and die-hard comic fans alike.
Arrow is arguably the crux of these shows, as it did come first, somewhat serving as a reboot for superhero TV shows after the end of Smallville. Similar to Christopher Nolan's fabulous Dark Knight trilogy, the show took a more realistic look at superheroes, super-villains, and the like. They've done very well with it, and I find many of the adaptions to be extremely memorable in their own ways.
As time has gone on however, the show has been adapting more and more of the unbelievable elements that we've come to expect from comic books. From the Mirakuru serum, to the Lazarus pits, to the Flash and all of the craziness he has to deal with, the show has enormously evolved. They've handled the transition for realistic to fantastic very well, and if ratings mean anything, without alienating the audience it may have originally attracted.
That said, the transition of the show did have a slight downside. The shows transition has come in baby steps, and as such it isn't yet comfortable with throwing in powered super-villain after powered super-villain. That seems to be The Flash's thing. For now, aside from the main antagonists, The Arrow seems to stick to fighting somewhat eccentric, but relatively normal villains. As I stated above, many of these realistic villains are very memorable, and the show has done a great job with them. But in the wake of The Flash, and the show being seemingly fine with fantastical villains, it's a bit of a shame that some of these characters were unable to receive the comics accurate depiction. Especially in a live-action adaption, as those aren't the easiest things to come by. That said here are my personal Top 5 Missed Character Opportunities from Arrow.
WARNING: POSSIBLE SPOILERS FOR ARROW BELOW
I'm insanely disappointed that Firefly won't be getting an accurate adaption (he was killed in his first appearance). The character had an insane amount of potential, and I felt that that potential was squandered, possibly more than for any other character. I will admit that they gave him a decent backstory. He seemed to go through more character development than any other version of the villain (except maybe Gotham's). What I hate is how normal he is. Sure if you've got a guy with a flamethrower, he's OK. But you give a guy with a flamethrower a jetpack so that he can fly around, raining fiery death from the sky? He becomes AWESOME. That's the Firefly I want to see, nothing else.
I honestly didn't know about this guy until I watched Arrow. Based on what I saw, I wasn't really expecting much from his comic counterpart. To my surprise, I found out that this guy is kind of a badass. He's a near invulnerable superhuman crime lord, capable of surviving a missile strike, and is tough enough to rip through Green Arrow like a wet toilet paper. Unlike most on this list, the Arrow-verse version of Brick is still alive, so he does have a chance at achieving this level of awesomeness, should they decide to bring him back. All they'd have to do is think of a cheesy, comic-booky way to give him powers, and voila!
Another baddie who went too soon. I can understand why they wouldn't faithfully adapt Solomon Grundy. The concept of a giant killer zombie may have seemed a little... out there, even for this series. Still, it would still be cool to see him in action. They could possibly have have a subplot based upon him trying to remember his former life, and with Hawkgirl about to become a major character, they could explore their uncanny friendship. Given that his superpower is the ability to come back to life, I doubt it would be hard to bring him back. Just think of a cheesy, comic-booky way to bring him back to life and voila!
Unlike these other villains, the sound-mimicking Onomatopoeia never even saw the light of television day, though he did come close. The story goes that the assassin, Mr.Blank, from the episode "Home Invasion" was originally intended to be Onomatopoeia. However, the producers changed their minds after discovering that the character's creator, Kevin Smith, didn't think that the character could be translated well outside of a comic book. They opted to replace him with a generic, mysterious assassin that was killed in his first and only appearance. I don't personally believe it would be that difficult to adapt the character. All they would need is to dub a sound over something (i.e. over an action, such as dropping something) then sync that exact sound to his mouth, giving the appearance of him intentionally repeating the sound. Sure it may look and sound a bit strange, but it certainly wouldn't be the most bizarre thing to have been on the show. I'd be entirely willing to indefinitely suspend my disbelief in order to see a live-action depiction of this strange and fascinating character.
As of now, these are just a few of the characters I think the show really missed out on. It's hard to tell where the series will go from here, in terms of super-powered characters. Though with the advent of HIVE. as the main villains of the 4th season, I suspect that some more super-criminals may be closer than we think.