I'm not sure what you're trying to ask. If you're referring to the Furious Five, The Dragon Warrior, and the villains, they do in fact need Kung Fu, because it is essentialy the basis for the premise of the whole franchise. The original story was based on Kung Fu, it surely wouldn't be Kung Fu Panda without Kung Fu. However, Lord Shen is an exception to this. Lord Shen's Kung Fu skills are not exactly par and are quite makeshift, as if he has never really studied the art, but where he lacks in physical strength he makes up for intelligence and devious cunning, balancing for his lack of Kung Fu mastery.