I keep seeing ppl say that Fred is gonna betray Tubbo but I doubt that it would happen because why would they do it. They knew the risk of keeping in contact with islanders, they knew what happened to WC06 yet they continue to write to Tubbo and went on a date because Fred values Tubbo as a friend and something else so much.

What i think might happen is that the Fed saw that things has come to far and deem Fred's new-found human emotion unacceptable and kidnap Tubbo to use him against Fred, to force them to return to the standard cold and emotionless state. They might not exiled Fred or do the WC06 treatment considering Fred is a high rank worker, but who said anything about blackmailing.

We all know Fred did bad things and is capable of doing bad things. Now imagine what they can do if their loved one is used against them

Now what it has to do with Quackity?....idk I just want to see Fred's villain arc :D