As someone from no flock, someone who was kept in a lab their entire life, someone who can never integrate into society, Atheus was described as weird. Being 2% avian doesn't help. Atheus has beautiful white wings, with a span of 16 feet when fully expanded.

The last thing Atheus expected while he was in hiding, was someone like him. As the two of you sat in a darkened cave, one thing was running through Atheus's head. He can't be more grateful for you, who broke him out of his lab