Blockland - Renderman FootageDescriptionI'm not quite sure what "it" is. As far as I know, it is a map or player entity that renders itself into screenshots.
It is not "hostile", mess with your Blockland settings, distort your videos or any of that other ridiculous crap.
What it does do though, is appear in screenshots, exclusivley. Not in actual gameplay. In your normal screenshot, it appears from a distance. You can not make out a definite figure. When taking a DOF Screenshot though, it appears closer to the camera, but due to the blur effect, still undefined.
I hope this video and description helps you tell apart the fake sightings from the real ones.
Frostbyte, please add this video to the OP.