Headcrab



Headcrabs are one of the most iconic creatures in the Half-Life video game series. These alien animals, while small, are extremely dangerous to anyone ill-equipped to fend them off. Originating from the alien world of Xen, these vicious parasites were teleported in vast numbers to Earth via portal storms that occurred following the Black Mesa Incident. They are referred to as "headcrabs" because they leap out and latch on to human heads, then proceed to take control of their victims' bodies.