See 'Teenage Mutant Ninja Turtles' Concept Art Featuring Krang, Bebop & Rocksteady [Updated]

Plenty of familiar characters popped up in this summer's Teenage Mutant Ninja Turtles, including April O'Neil, Shredder, and of course the Teenage Mutant Ninja Turtles themselves. However, there were plenty more that didn't make it in. Contrary to early rumors, Krang, Bebop, and Rocksteady were nowhere to be seen.

But now, thanks to some Teenage Mutant Ninja Turtle concept art, we have an idea of what they might have looked like had they shown up. Hit the jump to check it out.

[Images removed by request]

Apparently the villainous trio were part of an earlier screenplay that had more sci-fi elements. But after rewrites to simplify the storyline, Bebop, Rocksteady, and Krang were left out in the cold. At least for now, that is. Jonathan Liebesman's Teenage Mutant Ninja Turtles made enough money to earn a sequel, so these fan-favorite baddies could very well crop up in the next film. Especially if Liebesman's hints about exploring Dimension X bear out.

Bebop and Rocksteady look more or less like they usually do in the animated shows — only with a hyper-realistic cast to them, in keeping with Teenage Mutant Ninja Turtles' overall look. They even get to keep all their goofy accessories, like Bebop's ugly purple sunglasses and Rocksteady's very '90s crop top.

Krang's exoskeleton, on the other hand, has had a pretty solid makeover. The fleshy-meat-puppet-looking thing from the classic cartoons probably wouldn't look so good in a live-action / CG hybrid movie, so it's been replaced by a sleeker, more contemporary robotic model. The basic premise hasn't changed though. Krang is still a pink brain-like creature inhabiting a hulking human-shaped suit with no neck.

Assuming these Krang, Bebop, and Rocksteady actually show up in the next film, we don't know for sure they'll look like they do above. After all, remember how creepy the early versions of the Turtles' designs were? But until they do, this Teenage Mutant Ninja Turtles concept art should give fans something to chew on.

Teenage Mutant Ninja Turtles 2, or whatever it winds up being called, opens June 3, 2016.