Is there an ultimate self according to zen masters such as Dogen?

Is there an ultimate self according to zen masters such as Dogen? I think that in the scholastic tradition of the mahayana, that is not the standard interpretation of the sutras etc.. I guess I mean what I am all along, rather than something "fixed". The snake was merely a rope all along, rather than nothing whatsoever or nothing more than the illusion of a snake/myself.