Extracting FPK Files

So I've been on an endeavor to try to find the image files used for characters in a game, but having no prior experience whatsoever with ripping /any/ kind of game content it has been driving me insane. I haven't find any tool that can recognize these fpk files and even ones built for games have been unable to do so.

I was wondering if anyone who is more experienced at this would be willing to take a crack at extracting some of these files? I've attached an example .fpk from the directory I managed to extract.

I would be infinitely grateful if anyone could just help me understand how to do this, or even be able to extract them.