Headcrabs, derisively called "headhumpers" by Barney Calhoun and known as "parasitics" and "biotics" by the Combine Overwatch, are omnivorous, parasitic creatures. They are widely considered one of the most iconic alien creatures of the Half-Life series. Headcrabs are small creatures, roughly the size of a pumpkin, they are covered in smooth skin, which varies in color between subspecies, and crawl on four short legs. These legs provide enough jumping power to leap up to 3 meters (10 feet) in any direction. Papercraft created by Mike McDermott (billybob884).
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