The Killing actor was recently announced to star in the forthcoming reboot of Paul Verhoeven's 1987 sci-fi classic.
"RoboCop is going to be a lot more human," Kinnaman told MTV News.
"The first movie is one of my favourite movies. I love it. Of course, Verhoeven has that very special tone, and it's not going to have that tone.
"It's a re-imagination of it. There's a lot of stuff from the original. There are some details and throwbacks, but this version is a much better acting piece, for Alex Murphy and especially when he is RoboCop. It's much more challenging."
Kinnaman also explained that the classic RoboCop look will be redesigned.
"It's not going to be jaw action. They're still working on the suit and how it's going to look, but the visor is going to be see-through," he said. "You're going to see his eyes."
RoboCop is due for release on August 9, 2013.
Watch a trailer for the original RoboCop movie below: