> > > Fight Club President Mako Mankanshoku
> > 
> > Dio: "I had heard Jotaro had a daughter... but I thought that she would be taller."
> > 
> > 
> 
> I thought I've already stated he knows about the details of the series already, at least up to part 6's ending.

Please let me make [a harmless joke](https://www.youtube.com/watch?v=1PcLR2r1kaA) about deliberate references in silly anime.

Not to mention that I find the fact that Dio has basically omniscient knowledge of his own setting just from being in the Multiverse sort of strange. I don't think a single other character has done anything remotely similar, making his knowledge very out of place, and killing a lot of potential IC interaction.