While April O'Neil (Megan Fox), Vern Fenwick (Will Arnett) and Shredder (William Fichtner) are featured alongside the heroes in a half-shell, there are several other characters that fans were hoping would pop up in this live-action adventure, such as Casey Jones and villains Bebop and Rocksteady. Producer Brad Fuller revealed that, if a sequel moves forward, they hope to put all of them in the follow-up.
For those who remember the 1990 original Teenage Mutant Ninja Turtles movie, Elias Koteas portrayed Casey Jones, but Bebop and Rocksteady were not featured in that movie, or the 2007 feature TMNT. Despite being some of the most popular characters in the comics and the TV series, this sequel would mark the feature debut of both Bebop and Rocksteady.
Of course, Paramount hasn't even given the green light for a sequel yet, and it's unlikely that a script is being worked on. As you may remember, the original screenplay went through a couple of writers and plenty of rewrites before it got to the state it is in today. Let's also consider the fact that Brad Fuller fails to mention Krang. Does that mean he's in the first movie that is about to open in a few weeks? Guess we'll have to wait and see.
Teenage Mutant Ninja Turtles was released August 8th, 2014 and stars Megan Fox, Will Arnett, William Fichtner, Alan Ritchson, Noel Fisher, Pete Ploszek, Johnny Knoxville, Jeremy Howard. The film is directed by Jonathan Liebesman.