So I've asked this twice before, and you never answered so I figured I'd try one more time. Since the Doc Scratch we know is made up of things in the session we know, and he has stated that he is in every session, would he look different in a completely different session?

Doc Scratch mentions here that instances of him have appeared throughout every universe, not every session. Judging from the fact that we’ve already seen the origin of Lord English, my guess is that no, Doc Scratch does not look different across every universe.