Bioraptors are the main antagonists of the 2000 sci-fi horror film Pitch Black, the first entry of the Riddick franchise. They are a race of hostile aliens that live on the planet M6-117. They are very sensitive to light and live underground and emerge every 22 years when the planet has an eclipse as that’s the only time there is darkness on the planet due to having three suns. They are capable of eating anything that moves, including each other. They have features resembling Xenomorphs from the Alien franchise with crescent-shaped heads as well as hammerhead sharks and ptersosaurs. Riddick and other survivors of the Hunter Gratzner crash landing encounter the bioraptors and discover that they have killed off the natural wildlife of the planet as well as the other humans that were on the planet before them.