An archetype is a universal symbol recognized all around the globe. Archetype's are recognized everywhere. They happen in many different stories throughout society.
One common archetype is the shadow. This archetype is featured in the Batman trilogy. Batman is also a self archetype. Both of these archetypes are depicted throughout the movies. If you try to look for them, they are easily found.
The shadow archetype represents the bats in the movie. After Bruce gets trapped in a cave with bats, he develops are deep fear of them. His fear is represented all through the movie as the shadow. batman abolishes his fear by facing the bats, and it becomes his best attribute. The courage he had was represented by the self archetype.
The use of the archetypes are important to the movies because it's the movie's base. Without them, Batman wouldn't be what he was. Batman is not correctly accepted by society, but he is okay with it. That is where the anti-hero archetype is shown throughout.