Ok, I don't understand how and why Sparda and Trish could and would be Nero's parents. I think we've discussed enough times to come to a conclusion that Sparda's not the father and Trish isn't the mother. I really don't know who Nero's parents are but I'm pretty sure it's not Sparda as Capcom already said that he isn't. Sparda died before Trish was ever created so the possibility of Sparda as the father and Trish as the mother is quite impossible.