Board Thread:Off Topic/@comment-26336673-20171129015326/@comment-27383731-20171201014812

The biggest telltale sign that indicates it was a shapeshifter is that they would pretend to act like the being they are impersonating, but cannot retain their form for long after they have reached adulthood. If you see the being that looks like Mr Trimmer shimmer, it means that it was a shapeshifter