Exactly, I can tell that Marvin isn't the legit model. It makes sense it's part of the fix as I was told by Curator (and yes, he did have/use tools to dig through the disc) that the Marvin model wasn't in the files during some discussions I had with him in the past. It's also how he knew and mentioned on his forum that Elza's armor and such was on the disc. It is almost certainly the same build as the version he played.