Not a lot has been revealed about "Suicide Squad's" Killer Croc thus far, but actor Adewale Akinnuoye-Agbaje has just started opening up about his character's history in the film universe, and some of the research that went into the role -- which included watching old episodes of "Batman: The Animated Series."

On the character's criminal status in "Suicide Squad," and history with Batman, Akinnuoye-Agbaje told ComingSoon.net, "At the time you meet him in this film, he's a fully-fledged criminal. He's really one of the baddest criminals known to be roaming in Gotham, hence his lockup in Arkham. He's tangled with the Batman and here he is amongst these other foes. He's very much a formidable force at the time that you meet him."

Akinnuoye-Agbaje also remarked on the practical effects of the character, which he said was a choice on director David Ayer's part to give the character more "soul": "The head and shoulders are prosthetic that were glued onto my face and then the body down was painted. It took about five hours to do, but it was something that was a challenge that I was up for because I wanted to set a new standard for what can be done with prosthetics. We could have easily CGI'd this, but David [Ayer] was insistent on their being an actor to bring out the soul of the character. It gave me an opportunity to show what I could do with prosthetics."

As for his research into the part, Akinnuoye-Agbaje said, "I looked at all of it," He added, "I went back to the young Waylon Jones. The animated series. I had my own take, too. I researched cannibalism. I actually went out and watched real crocodiles, too. We incorporated some of the real life fight techniques that crocodiles do when they kill their prey. The death roll."

Directed by Ayer and starring Jared Leto, Will Smith, Margot Robbie, Viola Davis, Jai Courtney and more, "Suicide Squad" opens on August 5.