One of the clues that lead to the rumor is a report which says the movie will be filmed in New Orleans, where the deformed crocodile wrestler resides.
Rumor has it, Christopher Nolan's third "Batman" film will feature Killer Croc as the villain. The rumor surfaces after there was a report that the movie will be shot in New Orleans and comics writer Mark Millar tweeted, "Oh, wait. Con gossip: I know who the villain(s) are in Batman 3 and the big scene outside Gotham sounds awesome. Totally timely locale."
Slash Film then connects the dots, suggesting that Killer Croc is the one hinted by Millar because the deformed crocodile wrestler resides at the Louisiana swamps. Additionally, Miller claimed, "One of the villains is from my favourite childhood run on the character," which would fit Killer Croc since it first appeared in 1983, when the author was still a teen.
In the comic books, Killer Croc is described as having low intelligence but great strength, as well as crocodilian abilities, such as a keen sense of smell and the ability to hold his breath underwater for long periods of time.
He, however, is not the first character mentioned as possible villain for the untitled Batman 3 project. Previously, The Riddler has been widely rumored to appear in the upcoming movie with several actors, like Joseph Gordon-Levitt and Leonardo DiCaprio, thrown as the possible depicter.
Christopher Nolan will return to the helming position for the superhero action movie, with a script provided by his brother Jonathan Nolan and David S. Goyer. Christian Bale is expected to reprise his role as Bruce Wayne aka Batman when the movie starts shooting reportedly in April 2011 for a targeted July 20, 2012 U.S. release.