Yes. Humanoid man-eaters. They range from approximately five meters to fifteen meters and have only one weak spot on the back of the neck. Any other damage they can regenerate after only a few seconds or minutes, depending on how severe it is.

And before you ask, no one knows where they came from or why, or why they have an appetite for eating humans. As far as we know they don't even have a biological need for food since they survived for a hundred years without access to any people as a food source.