What Ever Happened to the Spirits of the Giants? Genesis 6:4?

First the Giants mentioned after the flood are not the true Nephilim but are like the true ancient Nephilim. As for Jude He is talking about their fathers who were angels not the Nephilim. Also Corinthians is talking about the Bishops as Aggelos can mean Messengers. As for the actual Nephilim they became the evil spirits you see later as though they had a human nature they also had an angelic spirit so they became evil spirits when they died.