A tall blue-haired guy who looks about 17 years old. He is wearing  Red T-shirt and big black pants. 
And his brother Samael with green curly hair is dressed in a black and red sweater Striped. In black cargo pants (with pockets on the sides in the mid-leg area). They are both demons with black horns, however Miles has longer horns than Samael. They have a black demon tail.
Unlike his brother Samael, Miles is very calm and quiet, of course sometimes he can be angry, but this is not often. 