He calls himself A.
Ayin is the founder of Lobotomy Corporation and coworker of Carmen and the Sephirah.
Ayin has black short hair, yellow eyes, wears an almost completely black attire with a shirt, belt, pants, and shoes, with his lab coat over the top. The letter 'A' is just the shortened version of his actual name.
He was a scientist, but he is currently the manager of Lobotomy Corporation.
He hates Angela so much, even though he is the one who made Angela. Ayin has pure despise of her.