Dark God, Cosmic Horror, and Dark Overlord.

The dragon of the abyss is known for destroying galaxies and worlds, he has defeated several gods and his power is very strong, he is larger than the universe itself, he is associated as a dark god

It has several horrors inside its body such as eyes, mouths, appendages or other organisms, it is a cosmic horror in the shape of a dragon, rituals, sedemonias and sacrifices are also performed and pacts are made with it.