Plastic Man

The Man in the Platic Mask, as seen in the video, INTRODUCTION, is only seen in videos on the MOSTLY HOSTLY YouTube channel. As of 2017, David Evans has been shown wearing the plastic mask in several recent videos.

Summary
His identity, motive, and goals are unknown.

Theories

 * While David had not addressed which masks are stolen, its entirely likely that he is wearing the Halloween mask worn by Mike in Halloween Footage Part 2. However, unlike Sage and Clowny, he does not appear in that video.
 * Due to the fact that most of the INTRODUCTION video consists of Clowny's messages, it appears that Clowny and The man in the plastic mask are working together.