The suit looks like it's still being built/painted. Plus, it carries a cross-shaped gatling gun like Prometheus is said to do in the novel. So yep, that's Prometheus alright. Thanks for the pic, gordol!
Makes one wonder if the suits on the covers before are indeed Wing Zero and Deathscythe and not Snow White and Warlock. xD
On a side note, why is Quatre holding a bow? Would they please stop with the stupid Robin Hood references. >_>