@agatharoza At first I thought it is Tyler, but i got to know him and saw that it could not possibly be him. Then secondly I thought it was Principal Bernucci but after Rosie told Autumn that she looks like an angel and sometimes angels fall off and break their wings and Tyler confirming that Villain X is a girl. I think Villain X is Rosie because Ellie doesn't seem to be behind everything that has been happening,,,like hanging out with the girl that Autumn found Joe with. So ya I think Villain X is Rosie.