The Raz Al Gul connection

What is the common thread among "Shadow", "Elektra", "Dare Devil" and "Batman"? All of them are superheroes (or heriones) for one thing. Upon looking a little closer we get to know that they are not genetically modified as Spiderman is nor are they alien to Earth like Superman. They are ordinary humans doing extraordinary tasks by polishing their skills and training their bodies and minds. Every one of them is skilled in martial arts and well versed with decption techniques and know the art of invisibility. While watching the Batman Begins I noticed a pattern repeating. The underlying thread that connects these super heroes is none other than "Raz Al Gul". We have first heard of him in "The Shadow" (Super hero played by Alec Baldwin) - trains him to become the Shadow. Then we heard of him in Elektra - The reason why she is so proficient in the Ninja techniques. Since Elektra is a spin-off from Dare Devil (DD) - We can safely assume that Raz Al Gul might have had a hand in the making of DD as well because we all do know that DD is blind but does extraordinary things using his other senses which others might find humanly impossible even with all the 5 senses intact! Finally Batman begins shows that Bruce Wayne was under the tutelage of Raz Al Gul. So, are most of the "genetically unmodified" and "all-american" super heroes trained by Raz Al Gul? Or is it the creators'(the persons who created the comics) obsession with the oriental? Perhaps. We may never know.