Skræks are mutant creatures created by scientists funded by the High Echelon. They were intended to be set loose and used as attack animals, confining people to the newly constructed Domed cities.
Skræks have pale skin, though which you can see their veins. They have sharp teeth, ragged wings made of skin, and no eyes.
- Not much is said about the skræk's overall appearance, but based on the information given a good real-world match to the skræk would have to be the jeholopterus, a small anurognathid pterosaur alive from the Middle to Late Jurassic.