Celestial Avatar

Celestial Avatars are extraordinarily powerful cosmic entities which exist as manifestations of stars, black holes, moons and other astronomical bodies, and are able to interact with other species by assuming a humanoid form. They can move through different universes and foresee all possible futures, and are known to manipulate events to create and erase timelines.

Biology
Celestial Avatars typically manifest themselves as humanoid beings with features such as colorful skin, pointed ears and tails. Their appearance varies from one individual to another, and a single Avatar can change their appearance throughout their life. Additionally, they can appear as miniature versions of the celestial body they represent, and also as the full-sized version, and can even induce supernovas.

Avatars can move through time and space and across different universes, and foresee multiple futures.

Due to their nature as manifestations of stars and other objects, Celestial Avatars are not regarded as actual living beings, which is demonstrated by the Bokor's ability to control an Avatar's body immediately upon infection without the need to kill them first as they must do to control other species. Therefore, Avatar bodies might be best regarded as being lifeless constructs, animated by the will of the celestial body that they represent.

Despite not being technically alive to begin with, Avatars in humanoid form are seemingly susceptible to being killed by Nietzschean weapons, although they have also been shown to regenerate or recover from other fatal injuries. Since their bodies are mere constructs that can be presumably recreated at any point, the only permanent way to kill an Avatar would be to destroy the astronomical object they're associated with.