So I found this prompt on Conceptart.org. They gave a brief and then you're supposed to develop a character off it. The Angel of Destruction sounded really cool, particularly the challenge of creating a black hole on its chest. Black holes cannot actually be seen since they consume even the light around them due to the immense amount of gravity they create.
Obviously, I couldn't actually draw what a black hole would actually look like, but I took that idea of consumption to define The Angel's method of destruction. It doesn't simply destroy, it consumes. That is the destruction, it is the final destination for all living things, it is the consuming void. That meant the angel would rarely take a physical form and, when it did, it would even consume that. So I had the body look as though it was barely held together and always falling apart.
TLDR: I had a fun drawing things.