Non-Corporeal

Introduction
The term "non-corporeal" is used to refer to a being with no true physical form. They may use physical avatars, but their essence exists in a nonphysical form. Sometimes, this could be spirit, energy, etc. Non-corporeality is different from intangibility, because in the latter case, said being's apparent body is their true body, it just can't be affected by physical forces. A non-corporeal being generally does not have any kind of defined body, but may take many different forms, all of which can be destroyed with little or no inconvenience to the true being behind them.