I'm expecting both to be Rossi (he is very practiced at representing multiple persona's).
It will probably be "Prof". Rossi will take off his platinum sponge wig as a disguise.
Actually if a new individual does surface that will be news that Rossi actually works with someone else on his "team" other than his lawyer. I find it strange that the papers don't show the persons name. Why? Rossi must have gotten the court to withold that information, but why would the judge agree?