Nezu is a fallen angel, and one of the few characters I've actually written a backstory for.

You can read his backstory here: https://docs.google.com/document/d/1syP0iJCJBb9uPnC-0suzwhVuWSUkWj4ouvYaZ7-ZjSQ/edit?usp=sharing

He can be drawn with a halo, but the halo must be broken.
He is blind in his left eye.
The bandages are not optional. The wounds under them will never heal.