>>113201560If we go off of the fan animation, I could see going that 24 is accidentally found by 21/Gary at the diner, Gary freaks out and is beside himself at the reality that 24 has been alive and well all this time, followed of course by some morbid joke about the identity of the head Gary was toting around throughout season 4. Then Gary either tries to temp his old friend back into the life of the henchman, or the two merely realize how they're grown apart, but figure they can still hang as regular friends.