Alien species from the planet Obeski, featured in Corru.Observer. There are two varieties: the flesh and blood "Larval" castes, which resemble humanoids with horn-like receptors, and the "ascended" Qou, which are amorphous robotic constructs made of a silicon-based substance known as Corru. Qou house the minds of dead Larval Obesk inside small "Mindcores," which serve as their most vital organ with which they think and pilot larger corru-based bodies.

Obesk have only been depicted through distorted images and stylized VR avatars within the damaged computing device of Corru.Observer's secondary protagonist, Akizet. They can style themselves after their Larval forms as Qou, and always retain their receptors, but the canonical appearances for the Obesk's different stages of life have never been fully shown.

While some Qou bodies can alter their shape at will, others are "fixed-state," with specialized capabilities like enduring high-pressure environments. Many sport floating extremities that connect to the body using integrated "Dull" transmission devices in place of joints.