Hey people !
I was watched the episode "Soul Purpose" again, when I notice 1 foreshadowing
The scene is when Fred take Angel's organs in his dream :
Angel : What's wrong?
Fred :Nothing. I can't seem to find anything wrong with you. I mean...
(...except that you're empty. There's nothing left. Just a shell.
Besides that , I found in 3 earlier episodes someone of the gang called Angel as "Puppet" and later he turned in a Puppet. Pretty cool ! m:)