A tall, blood-thirsty, human-like creature that is almost always searching for prey to hunt down and eat, it is a shiny, slimy red color and looks like a deformed human with a big smile, and beady eyes had its skin ripped off.

A mimic from an analog horror called "Vita Carnis"

It is a tall, human-like, blood-thirsty creature that is almost always on the search for prey to eat, it looks as if it's skin were peeled off and it is a shiny slimy red. 

A tall, scary human-looking creature.

Original Character 

It is a tall blood-thirsty creature almost always on the search for prey to capture and eat, it has large beady eyes, and a wide smile with human-like teeth

Mimic from the analog horror series "Vita Carnis".

You discover an abandoned laboratory, upon entering a strange room, you discover a protogen lying on the ground. You take a closer look and then suddenly... it turns on.