Before the season 4 trailer came out, I was speculating about where Graham’s route would go. But I never considered him joining VILE again to be a possibility. Why would one go back to the organization that literally mind wiped you and could easily do so again? Also, it doesn’t add much to the story. Personally I would have had Graham join ACME. People have said that if he became good it would be cliche. But what if he joined ACME for selfish reasons? What if he wanted to take revenge on VILE for mind wiping him and decided to do so with ACME’s help and then disappear on his own? Carmen’s brainwash would have him realize how much he cared for her and have him try to get her back. In my opinion that would have been a much better story arc (with the same ending) than him turning evil at the end of episode 4, not appearing for episodes 5 and 6 and then turning “good” again in episode 7 without any buildup at all.