Even though I’ve known Warcraft since the release of Warcraft 3, I can’t say what direction they decided to take regarding the Void.
From my perspective, the Void was supposed to be inspired by H.P. Lovecraft and not just dark energy from a black hole and creatures completely composed of shadow.
So I come to the question:
Are the creatures of the Void composed of energy because they really are that way or are they in the form of energy because they haven’t manifested in reality yet?
Are void lords just dark energy that made aliens?
The Star Augur Whatever-his-name described the beings of the Void as “Avatars of non-existence”.
And I think that’s a good description. They are everything that isn’t.
That’s why they consider all paths as true. Things that didn’t happen, things that don’t exist, it’s all real and valid to them because they are non-existence.
The Void (also referred to as Shadow)[2][3][4] is one of the two most fundamental forces in the Warcraft universe along with the Light, and is situated outside the barriers of reality. Although contradictory by their very nature, the Void and the Light are bound together on a cosmic scale, and the two cannot exist without the other.[5] The Void is ruled over by the void lords, merciless and cruel beings that seek only to twist reality into a realm of eternal torment. They created the Old Gods as physical manifestations of the Void, in order to corrupt and transform the planets they infested into places of despair and death.[6] Nevertheless, the Void itself is not necessarily “evil”; it is a primal force with its morality characterized by how it is wielded.[7]
Pure Void cannot exist within the physical universe but shades of it manifest as shadow magic[8][9] (or void magic)[3][4] and can be a source of terrible power, the kind of power that comes at a price,[10] as the very nature of the Void is hostile to what the mortal know as life and sanity,[11] and will do whatever it takes to drive them to madness.
The Void cannot fully see destiny, though neither can the Light, for neither are singularly responsible for creation. The Void seeks every possible path and sees them all as truth.
You’re thinking of the Old Gods. The Void Lords and Old Gods are kind of on the same side, and they wield some of the same energies, but they’re very different. You might as well ask why draenei are fleshy and not big glowing wind chimes.
Way back in WC3 when they started expanding the bestiary of “creeps” beyond the handful of neutral units that existed in WC2, they ended up with four general groups of “evil stuff”: undead, demons, dark energy-based creatures like nether dragons and voidwalkers, and fleshy monstrous aberrations with tentacles and fangs. As they’ve fleshed out those groups into their own factions and entities of power, they’ve kept up that distinction.