you could just texture a flat 3d mesh with that image and make it an enemy. Make it's weapon invisible and give it a really close range so it hurts you close, but in all honesty FPSC was not built with this kind of game in mind, and if you are truly interested in doing this kind of stylish 2D pseudo 3D game you'd be better off trying something like MMF or even the blitz3D engine.*
Also, this thread is really more suited to product chat, as you are not actually contributing anthing to the progression of models and media in FPSC, you are really just asking a question about the capabilities of the product.
*Yes I know, its promoting non-TGC products, but oddish asked if it was possible, so I'm just trying to help point him in the right direction!