Sorry but The Batman is not a Kamen Rider in my eyes. For one Batman is far to was born for a reason, and that so Bruce could bring justice to his parents death, and two Batman to a certain point is border line crazy he will do whatever it take to see justice is serve even if it means taking the life of his enemy.
I am huge fan of the Dark Knight I just do not see him as Kamen Rider, Batman to me is a figure anyone can become, and a Kamen Rider is someone who is chosen to become a Rider.