Energy being

An energy being or astral being is a theoretical life form that is composed of energy rather than matter. They appear in myths/legends, paranormal/UFO accounts, and in various works of speculative fiction.
Energy beings are typically rendered as a translucent glowing fluid or as a collection of flames or electrical sparks or bolts; somewhat in common with the representations of ghosts.
Energy beings have a variety of capacities. The Taelons are barely more powerful than mortals, while others such as Star Treks Q, Stargate SG-1s Ascended Ancients/Ori, s Anodites, or the Meekrob from Invader Zim possess god-like powers.

In science fiction