Your biological father is a K-pop idol? 

Angel looks like a human , he wears a white robe , his wings have beautiful soft white feathers , his eyes are grey , he has a halo on top of his head and white hair.

Devil also looks like a human , he has two pointy horns and devil wings , his hair is black and messy, he has red eyes.

Devil is egocentric and really flirtatious he is always telling jokes and not taking anything seriously  ,his real name is Amon.

Angel is kind and caring, his real name is Azrael.

Hell is a place without rules