A subspecies of Hopple, the Dark Hopples have extraordinarily strong legs that it uses to spring up and land on other creatures, with its wings being used to help stabilize them as they move through the air. Using specialized hook straws on their feet, they stab and drink the blood of unsuspecting prey. A numbing enzyme coats their feet to prevent the one having its blood drinking from being aware of its presence. The female Hopples have an extra set of large eyes to allow it to see which capillaries are oxygen-rich arteries instead of veins, as their eggs are internally stored in blood and require more oxygen than breathing can provide to pass through the egg's outer layers.