The Twist Villain

The twist, it hurts so much!

The real villain of the media you "didn't" expect to be such. When they're introduced to the plot, the Twist Villain is perceived to be on The Good Guys' side, but then around the end, The Truth Comes Out. Usually, this gets annoying to The Audience and could have them giving the media some negative reception for using this overplayed UnTrash.