Fans finally learned who is playing the Suicide Squad in Warner Bros. and DC Comics' upcoming adaptation last week. Will Smith (Deadshot), Tom Hardy (Rick Flagg), Margot Robbie (Harley Quinn), Jared Leto (The Joker), Jai Courtney (Captain Boomerang) and Cara Delevingne (Enchantress) are all confirmed, but there is still one important character yet to be cast, the squad's leader and main villain Amanda Waller. We reported shortly after the cast was announced that Oprah Winfrey is the studio's top candidate, and the actress is also the top choice of Suicide Squad comic book creator John Ostrander. Here's what he had to say in a recent interview with Comic Book Resources.

"What's really interesting to me is that all three of the women that they were talking about, Oprah Winfrey, Viola Davis and Octavia Spencer, were at the top of my list. Actually, I was just talking to my fiancé Mary Mitchell the other day, just before this was announced, and those were the three names that came to me off the top of my head. Oprah was actually at the top of my list! She showed in The Color Purple that she's a really good actor, and she's got the attitude for Waller."

When asked about Will Smith playing Deadshot, John Ostrander had this to say.

"I see it. I definitely see it. The thing you have to consider is that movies are different and separate entities from comics. They have different needs, and they have to find ways to get a lot of people into seats. To the general public, Deadshot as a character is not well known, so they wouldn't really notice any difference. Of course, the people doing the movies want to have the biggest star that they can, because that will help draw people into the movie. Understanding all of that, I have no problem with the casting."

John Ostrander added that he would also like to see original characters such as Bronze Tiger and Nightshade in the movie, while adding that the rumored casting of Lex Luthor (Jesse Eisenberg) would be an interesting story element. He also claims that Warner Bros. is sticking with his original concept for Suicide Squad:

RELATED: Suicide Squad Director Takes Swipe at His Own Movie, Shares Unseen Joker Image
"It sounds like they are going with my original concept, which is that these are bad guys, and in order to earn their freedom, they have to go on missions, in which they could be killed. I've even read that they are talking about that as the film, as well. Which I think is a good one. My original pitch to DC was the Secret Society of Super-Villains meets The Dirty Dozen. This sounds like they are fully behind the whole Dirty Dozen concept. These are people that will get pardoned if they survive a very risky mission."