Sazoru

He was older than his sister Verena. But since she is there he felt like his parents (Akuma and Astaroth) don't care about him anymore, they just pay attention to his sister. - that's what he thinks but it isn't like this. He just don't ask for help or sth like this he is often alone because he don't look for any realationships. Nevertheless he starts to envy his sister. 

One time he mistakely left the Dimension and met Sombra and his friends. He feels accepted and joined the Sombra-Army or whatever this group is xD

He can control his own shadow like Akuma, he can control Ice like both of his parents and he can fly. He have Airy tails with scorpion stings on it. (+ he have things like Ice Claws on his wings)
He also have the Markings that Airys usually have: *klick*