Son takes the form of a giant spider possessing a human head. His face, like Mother and Daughter, had the same facial features of red dots, white skin and hair similar to his "younger brother" Rui, with the only difference being that his eyes possess dark red scleras, with blue irises and black pupils.Son was shown to be sadistic and cruel, as seen in the flashbacks of Mother's memories when he openly taunted and enjoyed the physical and verbal abuse she was being put through by Rui and Father. 