PPKP is what I would best describe as a beat 'em up similar to River City Ransom, but smaller. Overall though, the sprite work looks fantastic. I'm sure someone could have a fun with a lot of these, there seems to be quite a wide variety of characters and visuals, including stages.
My Main: Ralf_XIII (by ActJapan)
My 2nd Main: Tetsu (by XCB)
All-Time Favorite: Dragon-Ken (by Kotori)