"You'll see not only my bum, but you'll see Eva Green's bum," he told TVGuide.com.
Bower calls the network's version of the classic King Arthur tale more modern and is hoping to draw on the relatable human aspects.
"Rather than the pomp and circumstance of kings and queens already instilled power, we find these people as normal people so the audience will invest in the characters," he says.
For more on Camelot and an update on the actor's other project — a small saga called Twilight — watch the video below.
Camelot airs Fridays at 8/7c on STARZ.